1
|
Yang Q, Zhang L, Wang H, Martín JD. Bioavailability and health risk of toxic heavy metals (As, Hg, Pb and Cd) in urban soils: A Monte Carlo simulation approach. Environ Res 2022; 214:113772. [PMID: 35792168 DOI: 10.1016/j.envres.2022.113772] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/14/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Toxic heavy metals pollution in urban soil has become a major global issue due to its adverse effects on the environment and human health. In this paper, 26 soil samples were analyzed to assess the speciation, bioavailability and human health risk of Arsenic (As), Mercury (Hg), Lead (Pb) and Cadmium (Cd) in urban soils of a heavy industrial city in NE China by using a Monte Carlo simulation approach. The results showed that As, Hg, Pb and Cd concentrations in the soil all exceed the corresponding background value of study area. Mercury displays the highest value of geo-accumulation index (Igeo), followed by Cd, Pb and As. The pollution load index (PLI) value (>2) indicates a moderate pollution level in the study area. The chemical speciation of HMs mainly exists in residual fraction except Cd. The probabilistic health risk assessment demonstrated that the mean values of Total Carcinogenic Risk (TCR) and Hazard Index (HI) calculated with total concentration are at the unacceptable level, with a higher risk to children than adults. However, the mean values calculated with bioavailable fraction are all within the acceptable level. The mean value of TCR and HI obtained by bioavailable fraction is about 96% and 95% lower than that obtained by total concentration, respectively. Thus, this study suggested that the bioavailable fraction of HMs is a more reliable parameter for health risk assessment, while the total concentration of HMs can overestimate the true risk. The results of this study provide some insight into the speciation, bioavailability and health risks of toxic heavy metals in urban soils in those heavy industrial cities.
Collapse
Affiliation(s)
- Qingchun Yang
- Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun, 130021, PR China; College of New Energy and Environment, Jilin University, Changchun, 130021, PR China.
| | - Liangmiao Zhang
- Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun, 130021, PR China; College of New Energy and Environment, Jilin University, Changchun, 130021, PR China
| | - Hualin Wang
- Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun, 130021, PR China; College of New Energy and Environment, Jilin University, Changchun, 130021, PR China
| | - Jordi Delgado Martín
- Escuela de Ingenieros de Caminos, Universidad de A Coruña, Campus de Elviña, 15192, Spain
| |
Collapse
|
2
|
Bolan S, Seshadri B, Keely S, Kunhikrishnan A, Bruce J, Grainge I, Talley NJ, Naidu R. Bioavailability of arsenic, cadmium, lead and mercury as measured by intestinal permeability. Sci Rep 2021; 11:14675. [PMID: 34282255 PMCID: PMC8289861 DOI: 10.1038/s41598-021-94174-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 06/25/2021] [Indexed: 12/17/2022] Open
Abstract
In this study, the intestinal permeability of metal(loid)s (MLs) such as arsenic (As), cadmium (Cd), lead (Pb) and mercury (Hg) was examined, as influenced by gut microbes and chelating agents using an in vitro gastrointestinal/Caco-2 cell intestinal epithelium model. The results showed that in the presence of gut microbes or chelating agents, there was a significant decrease in the permeability of MLs (As-7.5%, Cd-6.3%, Pb-7.9% and Hg-8.2%) as measured by apparent permeability coefficient value (Papp), with differences in ML retention and complexation amongst the chelants and the gut microbes. The decrease in ML permeability varied amongst the MLs. Chelating agents reduce intestinal absorption of MLs by forming complexes thereby making them less permeable. In the case of gut bacteria, the decrease in the intestinal permeability of MLs may be associated to a direct protection of the intestinal barrier against the MLs or indirect intestinal ML sequestration by the gut bacteria through adsorption on bacterial surface. Thus, both gut microbes and chelating agents can be used to decrease the intestinal permeability of MLs, thereby mitigating their toxicity.
Collapse
Affiliation(s)
- Shiv Bolan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Balaji Seshadri
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Simon Keely
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Anitha Kunhikrishnan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
| | - Jessica Bruce
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Ian Grainge
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia
| | - Nicholas J Talley
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia.
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW, Australia.
| |
Collapse
|
3
|
Bai Z, Wang M. Warmer temperature increases mercury toxicity in a marine copepod. Ecotoxicol Environ Saf 2020; 201:110861. [PMID: 32544748 DOI: 10.1016/j.ecoenv.2020.110861] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/23/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Marine biota have been co-challenged with ocean warming and mercury (Hg) pollution over many generations because of human activities; however, the molecular mechanisms to explain their combined effects are not well understood. In this study, a marine planktonic copepod Pseudodiaptomus annandalei was acutely exposed to different temperature (22 and 25 °C) and Hg (0 and 118 μg/L) treatments in a 24-h cross-factored experiment. Hg accumulation and its subcellular fractions were determined in the copepods after exposure. The expression of the genes of superoxide dismutase (SOD), glutathione peroxidase (GPx), metallothionein1 (mt1), heat shock protein 70 (hsp70), hsp90, hexokinase (hk), and pyruvate kinase (pk) was also analyzed. Both the Hg treatment alone and the combined exposure of warmer temperature plus Hg pollution remarkably facilitated Hg bioaccumulation in the exposed copepods. Compared with the Hg treatment alone, the combined exposure increased total Hg accumulation and also the amount of Hg stored in the metal-sensitive fractions (MSF), suggesting elevated Hg toxicity in P. annandalei under a warmer environment, given that the MSF is directly related to metal toxicity. The warmer temperature significantly up-regulated the mRNA levels of mt1, hsp70, hsp90, and hk, indicating the copepods suffered from thermal stress. With exposure to Hg, the mRNA level of SOD increased strikingly but the transcript levels of hsp90, hk, and pk decreased significantly, indicating that Hg induced toxic events (e.g., oxidative damage and energy depletion). Particularly, in contrast to the Hg treatment alone, the combined exposure significantly down-regulated the mRNA levels of SOD and GPx but up-regulated the mRNA levels of mt1, hsp70, hsp90, hk, and pk. Collectively, the results of this study indicate that ocean warming will potentially boost Hg toxicity in the marine copepod P. annandalei, which is information that will increase the accuracy of the projections of marine ecosystem responses to the joint effects of climate change stressors and metal pollution on the future ocean.
Collapse
Affiliation(s)
- Zhuoan Bai
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies/College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China.
| | - Minghua Wang
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies/College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China.
| |
Collapse
|
4
|
Kabamba M, Tuakuila J. Toxic metal (Cd, Hg, Mn, Pb) partition in the maternal/foetal unit: A systematic mini - review of recent epidemiological studies. Toxicol Lett 2020; 332:20-26. [PMID: 32569801 DOI: 10.1016/j.toxlet.2020.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 06/01/2020] [Accepted: 06/07/2020] [Indexed: 02/02/2023]
Abstract
The aim of this study was to summarise the available information regarding the partition of toxic metal (Cd, Hg, Mn, Pb) levels in the maternal/foetal unit from large epidemiological studies. We performed a systematic search of PubMed/MedLine, EMBASE, and ISI Web of Science for papers on Cd, total Hg, Mn or Pb levels in the maternal/cord blood that were published in English (n > = 200; 2010-2017). Data on year of publication, sample size, location, year of survey, and main results were extracted. We found a total of 35 papers. Most studies included large convenience samples of healthy pregnant women. The maternal/cord blood was properly used as a biomarker of prenatal exposure to toxic metals. The partition of these toxic metal levels in the maternal/foetal unit was metal-specific. Cd median levels (IQR) in cord blood reported worldwide were much lower [∼ 70 % < LOD = ± 0.11 μg/L] than those found in maternal blood [0.23 μg/L (0.15-0.35), ∼ 65 % > LOD]. Considering that Cd was under LOD in 70 % of the cord blood, Cd cord:maternal ratio as well as Cd cord proportion were not provided. Total Hg median levels (IQR) in cord blood [0.75 μg/L (0.40-1.19), ∼30 % < LOD = ±0.35 μg/L] were usually higher than in maternal blood [0.55 μg/L (0.40-0.85), ∼ 10 % < LOD = ±0.15 μg/L]. Hg cord:maternal ratio was 1.34 (1.00-1.91), and infants born would have Hg cord:(cord + maternal) proportion ranged from 0.50 to 0.63. Mn was the only metal that was detected in 100 % in both maternal (LOD : ±0.50 μg/L) and cord (LOD = ±0.2 μg/L) blood. Mn median levels (IQR) in cord blood [32.96 μg/L (26.90-40.10)] were 2 times higher than in maternal blood [14.01 μg/L (11.50-17.58)]. Mn cord:maternal ratio was 2.35 (1.09-3.80), and infants born would have Mn proportion ranged from 0.52 to 0.79. Pb median levels (IQR) in cord blood [5.79 μg/L (4.34-8.38), ∼ 5% < LOD : ±2.07 μg/L] were usually equal to or lower than those reported in maternal blood [8.07 μg/L (5.79-10.76), ∼ 1% < LOD = ±1.03 μg/L]. Pb cord:maternal ratio was 0.71 (0.59-0.96), and infants born would have Pb proportion ranged from 0.37 to 0.49. Globally, the results indicate that total Hg and Mn levels were lower in maternal blood but higher in cord blood. However, much greater variability was seen with Cd and Pb. At delivery, total Hg and Pb levels in maternal blood were strong predictors of cord blood levels. Our findings empty that understanding the partition, levels and correlations of toxic metals in the maternal/cord blood may help to elucidate the adverse effects of these metals on foetuses and neonates.
Collapse
Affiliation(s)
- M Kabamba
- Faculty of Sciences, University of Kinshasa, Democratic Republic of Congo
| | - J Tuakuila
- Faculty of Sciences, University of Kinshasa, Democratic Republic of Congo; Faculty of Health Sciences, University of Sherbrooke, Quebec, Canada.
| |
Collapse
|
5
|
Xu J, Zhang J, Lv Y, Xu K, Lu S, Liu X, Yang Y. Effect of soil mercury pollution on ginger (Zingiber officinale Roscoe): Growth, product quality, health risks and silicon mitigation. Ecotoxicol Environ Saf 2020; 195:110472. [PMID: 32199219 DOI: 10.1016/j.ecoenv.2020.110472] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 06/10/2023]
Abstract
The mercury residue in soil not only poisons plants, but also bioaccumulates and biomagnifies through the food chain, causing a significant risk to human health. As an essential condiment on the table, the food safety of ginger should be focused on. Using soil culture experiments, this study aimed to identify the response of ginger growth to mercury pollution, assess the transmission and residue of mercury in different product organs and explore the mitigation mechanism of silicon on mercury toxicity. Effects of soil mercury pollution on ginger growth showed hormesis and time effect. Long-term mercury pollution led to growth inhibition and quality degradation of ginger, eventually reducing its yield by 25.96% (mercury = 9 mg kg-1). Contents of mercury and silicon in different organs both were the highest in root, followed by rhizome, less in stem and leaf, especially the mercury residue in rhizome manifested as Mother-ginger > Son-ginger > Grandson-ginger. At 6 mg kg-1 soil mercury level, the mercury residue of Mother-ginger exceeds the edible pollutant limit standard (China) by 10.7 times, which makes no obvious risk after being consumed by adults, but poses a potential health threat to children. Notably, it is safer to consume the newly sprouted and inflated tender ginger. Application of silicon fertilizer could alleviate mercury toxicity, mainly by promoting ginger root growth and leaf pigment synthesis, stimulating water-gas exchange system, fluorescence system and antioxidant system to make an anti-stress response. 2 mg kg-1 silicon fertilizer had the most significant mitigation effect on mercury stress, which increased the yield of ginger by 24.85% and reduced the mercury residue of ginger block by 44.44%-60.17%.
Collapse
Affiliation(s)
- Jiamin Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China; Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Jing Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Yao Lv
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Kun Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China.
| | - Shaoyong Lu
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xiaohui Liu
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yong Yang
- China National Environmental Monitoring Centre, Beijing, 100012, China
| |
Collapse
|
6
|
Brown AD, Yalala B, Cukrowska E, Godoi RHM, Potgieter-Vermaak S. A scoping study of component-specific toxicity of mercury in urban road dusts from three international locations. Environ Geochem Health 2020; 42:1127-1139. [PMID: 31214843 PMCID: PMC7225195 DOI: 10.1007/s10653-019-00351-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 06/05/2019] [Indexed: 05/13/2023]
Abstract
This scoping study presents an investigation of the total and bioaccessible mercury concentrations in road dust (RD) from three international urban sites, where a one-off sampling campaign was conducted at each. This was done to address the hypothesis that the matrix in which mercury is found influences its ability to become accessible to the body once inhaled. For that purpose, the samples were analysed for total and pulmonary bioaccessible mercury and the data compared to the chemical structure of individual particles by SEM. The results obtained from this study suggest that a high mercury content does not necessarily equate to high bioaccessibility, a phenomenon which could be ascribed to the chemical character of the individual particles. It was found that the Manchester samples contained more pulmonary soluble mercury species (as determined by elemental associations of Hg and Cl) in comparison to the other two samples, Curitiba, Brazil, and Johannesburg, South Africa. This finding ultimately underlines the necessity to conduct a site-specific in-depth analysis of RD, to determine the concentration, chemical structure and molecular speciation of the materials within the complex matrix of RD. Therefore, rather than simply assuming that higher bulk concentrations equate to more significant potential human health concerns, the leaching potential of the metal/element in its specific form (for example as a mineral) should be ascertained. The importance of individual particle behaviour in the determination of human health risk is therefore highlighted.
Collapse
Affiliation(s)
- Andrew D Brown
- School of Science and the Environment, Manchester Metropolitan University, Manchester, UK
- AECOM, Regan Way, Nottingham, UK
| | - Bongani Yalala
- Molecular Science Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Ewa Cukrowska
- Molecular Science Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Ricardo H M Godoi
- Environmental Engineering Department, Federal University of Parana, Curitiba, Parana, Brazil
| | - Sanja Potgieter-Vermaak
- School of Science and the Environment, Manchester Metropolitan University, Manchester, UK.
- Molecular Science Institute, University of the Witwatersrand, Johannesburg, South Africa.
| |
Collapse
|
7
|
Ruelas-Inzunza J, Amezcua F, Coiraton C, Páez-Osuna F. Cadmium, mercury, and selenium in muscle of the scalloped hammerhead Sphyrna lewini from the tropical Eastern Pacific: Variation with age, molar ratios and human health risk. Chemosphere 2020; 242:125180. [PMID: 31698208 DOI: 10.1016/j.chemosphere.2019.125180] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/11/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
With the aim of assessing health risk to shark consumers, cadmium, mercury, and selenium were measured in muscle of Sphyrna lewini from four coastal states (Baja California Sur, Sinaloa, Nayarit, and Colima) in western Mexico. According to length of specimens, three age modes were found: juveniles and neonates (the majority of the individuals), preadults and adults. Average concentrations (μg g-1 dry weight) in all the studied individuals followed the order cadmium (0.06), selenium (0.94), and mercury (1.56). The mean concentrations of cadmium and mercury increased significantly (p < 0.001) with mean length of specimens. Overall, hazard quotient and hazard index values were below one so there is no health risk to consumers. According to molar ratios of Hg and Se in the edible portion (muscle) of sharks, and depending on the areas of collection, individuals from Baja California Sur might not be beneficial to consumers.
Collapse
Affiliation(s)
- Jorge Ruelas-Inzunza
- Instituto Tecnológico de Mazatlán, Calle Corsario 1, No. 203, Col. Urías, 82070, Mazatlán, Sinaloa, Mexico.
| | - Felipe Amezcua
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Joel Montes Camarena s/n, 82040, Mazatlán, Sinaloa, Mexico
| | - Claire Coiraton
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, Coyoacán, Mexico City, 04510, Mexico
| | - Federico Páez-Osuna
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Joel Montes Camarena s/n, 82040, Mazatlán, Sinaloa, Mexico
| |
Collapse
|
8
|
Costa BNS, Almeida HP, da Silva BCP, de Figueiredo LG, de Oliveira AM, Lima MDO. Macrobrachium amazonicum (Crustacea, Decapoda) Used to Biomonitor Mercury Contamination in Rivers. Arch Environ Contam Toxicol 2020; 78:245-253. [PMID: 31858197 DOI: 10.1007/s00244-019-00683-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
Open-air landfill's may be are considered as a potential source of human environmental exposure to chemical substances such as, polycyclic aromatic hydrocarbons and toxic metals. Due to possible availability of mercury in the environment caused by open landfill emissions, this study evaluates the spatiality and seasonality of macroinvertebrates, in particular shrimps (Macrobrachium amazonicum), exposure to mercury (Hg). Information regarding Hg accumulation in this crustacean may be important for the development of public policies aiming conservation and preservation of ecosystems surrounding landfills in Amazon, and around the world. Sampling occurred quarterly in the following months: November/2015; February/2016; May/2016 and; August/2016. In each of these months, three points were selected: P1, P2 and P3. The samples were processed via acid digestion and the quantification of metal was performed by inductively coupled plasma mass spectrometry. The average concentration of total mercury (T-Hg) was 24.565 ± 6.610 µg kg-1 wet weight, with minimum and maximum limits of 12.742 ± 11.367 (P3) and 35.509 ± 14.761 µg kg-1 wet weight (P1) in November/2015 and August/2016, respectively. The concentration of total mercury (T-Hg) in shrimps was different between points (p = 0.004) and months (p = 0.000). The T-Hg concentrations were significantly higher in May and August 2016, which corresponds to the dry season. The presence of landfills promotes large accumulation of T-Hg in the aquatic biota and represents a risk to human health. However, seasonal changes in T-Hg levels were observed. In the wettest period, bioconcentration factor levels decrease in aquatic organisms.
Collapse
|
9
|
Knott KK, O'Hearn R, Niswonger D, Lawson L, North R, Obrecht D, Tracy-Smith E, Voss R, Wenzel J, McKee M. Physical, Chemical, and Biological Factors that Contribute to the Variability of Mercury Concentrations in Largemouth Bass Micropterus salmoides from Missouri Reservoirs. Arch Environ Contam Toxicol 2020; 78:284-293. [PMID: 31858198 DOI: 10.1007/s00244-019-00697-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
Large-bodied predatory sportfish from Missouri reservoirs can contain elevated methylmercury concentrations that are of concern to the health of consumers. The concentration of total mercury (tHg) in the muscle (which > 95% is in the methylated-Hg form) of harvestable-sized largemouth bass (Micropterus salmoides; LMB) was examined to determine which factors contributed to the variability of tHg concentration in sportfish populations among Missouri reservoirs. Mean tHg concentrations in LMB from each reservoir were compared to physical and chemical characteristics of the reservoir and to biological attributes of each LMB population. Low concentrations of tHg (70-170 ng/g wet weight) in LMB from large reservoirs (surface area ≥ 35,680 acres) were likely related to the dilution of chemical Hg forms with water volume and depth. The highest tHg concentrations in LMB (268-542 ng/g) were from reservoirs with low particulate inorganic material (< 1.5 mg/L) and chlorophyll a concentrations (< 14.6 μg/L), and from LMB populations with a low proportion of large fish (proportional size distribution of LMB > 12 inches was < 33%). These relationships suggest that resource competition among LMB likely contributed to tHg bioaccumulation in reservoirs < 930 acres. Small reservoirs located in northern Missouri also may have greater methylation potential due to warmer water temperatures and anoxic conditions, but more data are needed to confirm these interactions. Fish consumption advisories for reservoirs with large surface area and volume could be reduced from one fish meal per month to one per week. To improve Missouri fisheries and protect consumers, management strategies to limit methylation and improve fish growth should be considered to reduce methylmercury bioaccumulation in small- and medium-sized reservoirs.
Collapse
Affiliation(s)
- Katrina K Knott
- Environmental Health Unit, Resource Science Division, Missouri Department of Conservation, 3500 East Gans Road, Columbia, MO, USA.
| | - Rebecca O'Hearn
- Environmental Health Unit, Resource Science Division, Missouri Department of Conservation, 3500 East Gans Road, Columbia, MO, USA
| | - Darby Niswonger
- Fisheries Division, Missouri Department of Conservation, 3500 East Gans Road, Columbia, MO, USA
| | - Larry Lawson
- Bureau of Environmental Epidemiology, Division of Community and Public Health, Missouri Department of Health and Senior Services, Jefferson City, MO, USA
- E.W. Shell Fisheries Station, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, 2101 N. College St., Auburn, AL, USA
| | - Rebecca North
- School of Natural Resources, University of Missouri, Anheuser-Bush Natural Resources Building, Columbia, MO, USA
| | - Dan Obrecht
- School of Natural Resources, University of Missouri, Anheuser-Bush Natural Resources Building, Columbia, MO, USA
| | - Emily Tracy-Smith
- School of Natural Resources, University of Missouri, Anheuser-Bush Natural Resources Building, Columbia, MO, USA
| | - Robert Voss
- Water Protection Program, Missouri Department of Natural Resources, Jefferson City, MO, USA
| | - Jeff Wenzel
- Bureau of Environmental Epidemiology, Division of Community and Public Health, Missouri Department of Health and Senior Services, Jefferson City, MO, USA
| | - Mike McKee
- Environmental Health Unit, Resource Science Division, Missouri Department of Conservation, 3500 East Gans Road, Columbia, MO, USA
| |
Collapse
|
10
|
Du W, Zhang CY, Kong XM, Zhuo YQ. Kinetic study on elemental mercury release from fly ashes and hydrated fly ash cement pastes. Chemosphere 2020; 241:125028. [PMID: 31629233 DOI: 10.1016/j.chemosphere.2019.125028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 09/28/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
The kinetics of elemental mercury (Hg0) release from fly ashes and hydrated fly ash cement pastes was investigated using a homemade Hg measurement system. Three types of fly ash (FA) and ordinary Portland cement (OPC) were used to prepare cement pastes. After standard curing for 28 days, the hydrated cement paste (HCP) was ground into a fine powder for Hg emission measurements. Detectable Hg0 was found released from both fly ashes and hydrated fly ash cement pastes. The results show that elevated temperatures and evaporation of the capillary pore water in wet HCP samples accelerate Hg0 release. Both desorption of Hg0 from the particle surface of HCP powder and migration of Hg0 from the inner pores contribute to Hg0 release. The kinetic calculation indicates that the hydration products of hydrated fly ash cement have little immobilization effect on Hg0, which is mainly physically encapsulated in the HCP particles by hydration products.
Collapse
Affiliation(s)
- Wen Du
- Key Laboratory of Safety Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing, 100084, PR China
| | - Chao-Yang Zhang
- Key Laboratory of Safety Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing, 100084, PR China
| | - Xiang-Ming Kong
- Key Laboratory of Safety Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing, 100084, PR China.
| | - Yu-Qun Zhuo
- Key Laboratory of Thermal Science and Power Engineering of China Education Ministry, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, PR China.
| |
Collapse
|
11
|
Ehnert-Russo SL, Gelsleichter J. Mercury Accumulation and Effects in the Brain of the Atlantic Sharpnose Shark (Rhizoprionodon terraenovae). Arch Environ Contam Toxicol 2020; 78:267-283. [PMID: 31760438 DOI: 10.1007/s00244-019-00691-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Few published studies have examined whether the elevated concentrations of the nonessential toxic metal mercury (Hg) often observed in shark muscle also occur in the shark brain or whether Hg accumulation affects shark neurophysiology. Therefore, this study examined accumulation and distribution of Hg in the shark brain, as well as effects of Hg on oxidative stress in the shark central nervous system, with particular focus on the Atlantic sharpnose shark (Rhizoprionodon terraenovae). Sharks were collected along the southeastern U.S. coast throughout most of this species' U.S. geographical range. Total Hg (THg) concentrations were measured in and compared between shark muscle and brain, whereas known biomarkers of Hg-induced neurological effects, including glutathione depletion, lipid peroxidation, and concentrations of a protein marker of glial cell damage (S100b), were measured in shark cerebrospinal fluid. Brain THg concentrations were correlated with muscle THg levels but were significantly lower and did not exceed most published thresholds for neurological effects, suggesting limited potential for detrimental responses. Biomarker concentrations supported this premise, because these data were not correlated with brain THg levels. Hg speciation also was examined. Unlike muscle, methylmercury (MeHg) did not comprise a high percentage of THg in the brain, suggesting that differential uptake or loss of organic and inorganic Hg and/or demethylation of MeHg may occur in this organ. Although Hg accumulation in the shark brain generally fell below toxicity thresholds, higher THg levels were measured in the shark forebrain compared with the midbrain and hindbrain. Therefore, there is potential for selective effects on certain aspects of shark neurophysiology if brain Hg accumulation is increased.
Collapse
Affiliation(s)
- S L Ehnert-Russo
- University of North Florida, 1 UNF Dr, Jacksonville, FL, 32224, USA
| | - J Gelsleichter
- University of North Florida, 1 UNF Dr, Jacksonville, FL, 32224, USA.
| |
Collapse
|
12
|
Raj D, Maiti SK. Sources, bioaccumulation, health risks and remediation of potentially toxic metal(loid)s (As, Cd, Cr, Pb and Hg): an epitomised review. Environ Monit Assess 2020; 192:108. [PMID: 31927632 DOI: 10.1007/s10661-019-8060-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
The release of potentially toxic metal(loid)s (PTMs) such as As, Cd, Cr, Pb and Hg has become a serious threat to the environment. The anthropogenic contribution of these PTMs, especially Hg, is increasing continuously, and coal combustion in thermal power plants (TPPs) is considered to be the highest contributor of PTMs. Once entered into the environment, PTMs get deposited on the soil, which is the most important sink of these PTMs. This review centred on the sources of PTMs from coal and flyash and their enrichment in soil, chemical behaviour in soil and plant, bioaccumulation in trees and vegetables, health risk and remediation. Several remediation techniques (physical and chemical) have been used to minimise the PTMs level in soil and water, but the phytoremediation technique is the most commonly used technique for the effective removal of PTMs from contaminated soil and water. Several plant species like Brassica juncea, Pteris vittata and Helianthus annuus are proved to be the most potential candidate for the PTMs removal. Among all the PTMs, the occurrence of Hg in coal is a global concern due to the significant release of Hg into the atmosphere from coal-fired thermal power plants. Therefore, the Hg removal from pre-combustion (coal washing and demercuration techniques) coal is very essential to reduce the possibility of Hg release to the atmosphere.
Collapse
Affiliation(s)
- Deep Raj
- Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826 004, India
| | - Subodh Kumar Maiti
- Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826 004, India.
| |
Collapse
|
13
|
Kavčič A, Budič B, Vogel-Mikuš K. The effects of selenium biofortification on mercury bioavailability and toxicity in the lettuce-slug food chain. Food Chem Toxicol 2020; 135:110939. [PMID: 31697969 DOI: 10.1016/j.fct.2019.110939] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 10/26/2019] [Accepted: 11/01/2019] [Indexed: 12/20/2022]
Abstract
The effects of foliar Se biofortification (Se+) of the lettuce on the transfer and toxicity of Hg from soil contaminated with HgCl2 (H) and soil collected near the former Hg smelter in Idrija (I), to terrestrial food chain are explored, with Spanish slug as a primary consumer. Foliar application of Se significantly increased Se content in the lettuce, with no detected toxic effects. Mercury exerted toxic effects on plants, decreasing plant biomass, photochemical efficiency of the photosystem II (Fv/Fm) and the total chlorophyll content. Selenium biofortification (Se+ test group) had no effect on Hg bioaccumulation in plants. In slugs, different responses were observed in H and I groups; the I/Se+ subgroup was the most strongly affected by Hg toxicity, exhibiting lower biomass, feeding and growth rate and a higher hepatopancreas/ muscle Hg translocation, pointing to a higher Hg mobility in comparison to H group. Selenium increased Hg bioavailability for slugs, but with opposite physiological responses: alleviating stress in H/Se+ and inducing it in I/Se+ group, indicating different mechanisms of Hg-Se interactions in the food chain under HgCl2 and Idrija soil exposures that can be mainly attributed to different Hg speciation and ligand environment in the soil.
Collapse
Affiliation(s)
- Anja Kavčič
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
| | - Bojan Budič
- National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia.
| | - Katarina Vogel-Mikuš
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia.
| |
Collapse
|
14
|
Forján R, Baragaño D, Boente C, Fernández-Iglesias E, Rodríguez-Valdes E, Gallego JR. Contribution of fluorite mining waste to mercury contamination in coastal systems. Mar Pollut Bull 2019; 149:110576. [PMID: 31546111 DOI: 10.1016/j.marpolbul.2019.110576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Samples from 13 beaches along the northern Spanish coast, a region with a history of heavy industries, were first screened to identify signs of pollution. High concentrations of Hg and Ba on Vega beach were found, both elements belong to the fluorite ore paragenesis, mined in the surroundings. Samples of beach and fluvial sediments, and nearby soils were collected in Vega beach area to address potential Hg pollution, fate and sources. Most samples showed a similar pollutants fingerprint to that of beach samples, especially those taken from white dunes, registering notable Hg concentrations. Hg was enriched in the finer fractions, and overall the main input was attributed to the mining waste discharged along the coast in the past. Although a specific risk assessment and study of the submerged sediments are advisable for this area, Hg bioavailability and methylation were low, thus indicating that this metal poses a reduced environmental risk.
Collapse
Affiliation(s)
- Rubén Forján
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain; Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Lagoas, Marcosende, 36310 Vigo, Pontevedra, Spain.
| | - Diego Baragaño
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain
| | - Carlos Boente
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain
| | - Elena Fernández-Iglesias
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain
| | - Eduardo Rodríguez-Valdes
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain
| | - J R Gallego
- INDUROT and Environmental Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres 33600, Spain
| |
Collapse
|
15
|
Pelcová P, Zouharová I, Ridošková A, Smolíková V. Evaluation of mercury availability to pea parts (Pisum sativum L.) in urban soils: Comparison between diffusive gradients in thin films technique and plant model. Chemosphere 2019; 234:373-378. [PMID: 31228839 DOI: 10.1016/j.chemosphere.2019.06.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/15/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
The diffusive gradients in thin films technique (DGT) was used for the determination of bioavailable mercury in urban soils, and results were compared to the mercury accumulation by Pisum sativum L. (pea) parts (leaf, root, stem, blossom, legume, and green seed). The total mercury concentration in soil samples was ranged between 0.084 and 0.326 mg kg-1. The soil solutions contained 0.15%-0.20% of mercury present in soils. In the soil solution, 2.21%-3.45% of mercury was available for DGT units. The highest mercury content was determined in the leaf and root of the pea plant, and the lowest in the consumable part of the pea plant (green seed). Mercury concentration in the parts of the pea plant increased over time, alongside the growth of the plant. The effect of acid precipitation on mercury bioavailability was statistically non-significant (p = 0.53). Significant and positive correlations were found between mercury flux into DGT unit, and mercury flux into the root (r = 0.989), leaf (r = 0.985), and stem (r = 0.904) of the pea plant. The obtained results suggest that the DGT method could be used for description of the uptake of mercury by pea plant parts in non-contaminated and slightly contaminated soils.
Collapse
Affiliation(s)
- Pavlína Pelcová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic.
| | - Iveta Zouharová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic
| | - Andrea Ridošková
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic
| | - Vendula Smolíková
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic
| |
Collapse
|
16
|
Rodríguez-Alonso J, Sierra MJ, Lominchar MÁ, Millán R. Effects of mercury on the germination and growth of Quercus ilex L. seedlings. Environ Sci Pollut Res Int 2019; 26:30930-30940. [PMID: 31452119 DOI: 10.1007/s11356-019-06186-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
While it is well-known that the toxicity of mercury for plants is related to its bioavailability in the environment in which the plant lives, few studies have addressed Hg effects under controlled conditions of life-limiting available Hg concentrations. This study examines the effects of Hg on the holm oak (Quercus ilex L.) exposed to medium-high available Hg concentrations. Holm oak seeds were sown in a perlite substrate and grown in the presence of a nutrient solution containing 0, 5, 25, or 50 μM Hg. The variables determined as outcome measures were impacts on germination, growth, and nutrient accumulation along with Hg concentration in leaves, stems, and roots at different growth stages. Our findings suggest no overall detrimental effects of the metal on germination, nutrient accumulation, and plant growth, although root morphology was clearly modified. Mercury accumulation in the plant varied according to time, organ, Hg treatment dose, and plant growth stage. When comparing Hg build-up in the different organs, highest concentrations of the metal were detected in the roots, followed by the leaves and stems. The Hg accumulation pattern was positively correlated with time and Hg dose, whereas negative correlation was observed with growth stage. The impacts of all these factors on Hg accumulation were not additive pointing to interesting interaction effects that should be explored in future work.
Collapse
Affiliation(s)
- Javier Rodríguez-Alonso
- CIEMAT-Environmental Department (DMA), Avenida Complutense 40, Building 20, E-28040, Madrid, Spain.
| | - María José Sierra
- CIEMAT-Environmental Department (DMA), Avenida Complutense 40, Building 20, E-28040, Madrid, Spain
| | - Miguel Ángel Lominchar
- CIEMAT-Environmental Department (DMA), Avenida Complutense 40, Building 20, E-28040, Madrid, Spain
| | - Rocío Millán
- CIEMAT-Environmental Department (DMA), Avenida Complutense 40, Building 20, E-28040, Madrid, Spain
| |
Collapse
|
17
|
Liao W, Wang G, Zhao W, Zhang M, Wu Y, Liu X, Li K. Change in mercury speciation in seafood after cooking and gastrointestinal digestion. J Hazard Mater 2019; 375:130-137. [PMID: 31054530 DOI: 10.1016/j.jhazmat.2019.03.093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 02/19/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Mercury (Hg) is readily bioaccumulated in seafood, a common ingredient in indigenous cuisines throughout the world. This study investigates Hg speciation in cooked seafood after gastric and intestinal digestion. The results showed that the removal of Hg by washing was negligible. Additionally, the results of our calculations regarding the mass balance of Hg concentration indicated that cooking reduced Hg mainly by means of volatilization and that Hg2+ was more readily reduced than MeHg. Moreover, cooking lowered the bioaccessibility of Hg in seafood: the reduced percent of bioaccessible Hg2+ after cooking ranged from 2 to 35% (on average, 16%). The corresponding numbers were slightly lower compared with those for MeHg (on average, 19%). Furthermore, there might be a chemical transformation of Hg during in vitro gastrointestinal digestion. The results of in vivo tests in laboratory mice suggested that methylation of Hg mainly took place in the gastric tract, whereas demethylation of Hg occurred primarily during intestinal digestion. These findings indicate that the bioaccessibility of Hg2+ and MeHg was not only related to their initial concentrations in the food samples, but also that further studies on the mechanisms of Hg demethylation and methylation during gastrointestinal digestion are essential for more realistic risk assessments.
Collapse
Affiliation(s)
- Wen Liao
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guang Wang
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China.
| | - Wenbo Zhao
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China
| | - Meng Zhang
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China; College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Ye Wu
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China
| | - Xiaowei Liu
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China
| | - Kaiming Li
- National Key Laboratroty of Water Environment Simulation and Polltion Control, South China Institute of Environment Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510665, China; Guangdong Key Laboratory of Water and Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China
| |
Collapse
|
18
|
Xu Z, Fan W, Shi Z, Tan C, Cui M, Tang S, Qiu G, Feng X. Mercury and methylmercury bioaccumulation in a contaminated bay. Mar Pollut Bull 2019; 143:134-139. [PMID: 31789148 DOI: 10.1016/j.marpolbul.2019.04.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/04/2019] [Accepted: 04/12/2019] [Indexed: 06/10/2023]
Abstract
The bioaccumulation and the main source of total Hg (THg) and methylmercury (MMHg) in the deposit-feeding polychaete Neanthes japonica collected in Jinzhou Bay, China, were investigated. Compared with the historical data, THg bioaccumulation in polychaetes collected in sediment of Jinzhou Bay was distinctly higher due to higher sediment THg concentration, but MMHg bioaccumulation was significantly lower. THg accumulation in polychaetes mainly derived from its accumulation in sediment. However, MMHg bioaccumulation in polychaetes did not correlate with Hg concentration in sediment. Besides sediment ingestion, MMHg accumulation in polychaetes may partially source from the process of in vivo transformation. The in vivo Hg methylation may take place in polychaetes, according to the excellent correlation between MMHg concentration and THg and inorganic Hg concentration in polychaetes. The biochemical characters in polychaete body, the oxidation-reduction environment and the microbial activity in polychaete gut may be beneficial to in vivo Hg methylation.
Collapse
Affiliation(s)
- Zhizhen Xu
- Key Laboratory of Occupational Safety and Health, Beijing Municipal Institute of Labor Protection, Beijing 100054, PR China
| | - Wenhong Fan
- School of Space and Environment, Beihang University, Beijing 100191, PR China; Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing 100191, PR China.
| | - Zhiwei Shi
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Cheng Tan
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Minming Cui
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Shichuan Tang
- Key Laboratory of Occupational Safety and Health, Beijing Municipal Institute of Labor Protection, Beijing 100054, PR China
| | - Guangle Qiu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China.
| |
Collapse
|
19
|
Liu T, Wang J, Feng X, Zhang H, Zhu Z, Cheng S. Spectral insight into thiosulfate-induced mercury speciation transformation in a historically polluted soil. Sci Total Environ 2019; 657:938-944. [PMID: 30677959 DOI: 10.1016/j.scitotenv.2018.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/01/2018] [Accepted: 12/02/2018] [Indexed: 06/09/2023]
Abstract
We studied the effect of different doses (0.5%, 2% and 5% (w/w)) of ammonium thiosulfate on mercury (Hg) speciation fractionation following its addition to the soil, as well as its accumulation by oilseed rape (Brassica napus L.), corn (Zea mays L.), and sweet potato (Ipomoea batatas L.), and compared them to a non-treated control in a historically polluted soil. The oilseed rape, corn, and sweet potato were planted consecutively in the same soils on days 30, 191, and 276, respectively after the addition of thiosulfate to the soil. The key results showed that bioavailable Hg contents in the rhizosphere soils ranged from 0.18 to 2.54 μg kg-1, 0.28 to 2.77 μg kg-1, and 0.24 to 2.22 μg kg-1, respectively, for the 0.5%, 2% and 5% thiosulfate treatments, which were close to the control soil (0.25 to 1.98 μg kg-1). The Hg L3-edge X-ray absorption near edge structure (XANES) results showed a tendency of the Hg speciation to transform from the Hg(SR)2 (initial soil, 56%; day-191 soil, 43%; day-276 soil, 46%, and day-356 soil, 16%) to nano particulated HgS (initial soil, 26%; day-191 soil, 42%; day-276 soil, 42%, and day-356 soil, 73%) with time in the soil treated with a 5% dose of thiosulfate. The Hg contents in the tissues of the crops, except for oilseed rape, were slightly affected by the addition of thiosulfate to the soil at all dosages, compared to the control. The addition of thiosulfate did not induce the movement of bioavailable Hg to the lower layer of the soil profile. We conclude a promotion of Hg immobilization by thiosulfate in the soil for over one year, offering a promising method for in-situ Hg remediation at Hg mining regions in China.
Collapse
Affiliation(s)
- Ting Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Jianxu Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China.
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China.
| | - Hua Zhang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Zongqiang Zhu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, China
| | | |
Collapse
|
20
|
La Colla NS, Botté SE, Marcovecchio JE. Mercury cycling and bioaccumulation in a changing coastal system: From water to aquatic organisms. Mar Pollut Bull 2019; 140:40-50. [PMID: 30803660 DOI: 10.1016/j.marpolbul.2018.12.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 11/14/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
This study evaluated -for the first time- the occurrence and distribution of total Hg in abiotic (dissolved and particulate water fractions) and biotic (gills and muscle tissues of six commercial fish species) compartments within a South American coastal environment with anthropogenic pressure. This study dealt with environmental issues on developing countries which, as they are in continuous growth, face the highest rate of coastal transformation. Total Hg content was determined by acid digestion and measured using a cold vapor atomic absorption spectrophotometer. Results revealed that dissolved Hg exceeded the recommended levels for superficial saline waters in 67% of the cases. Hg concentrations varied among fish species and its tissues. The results suggested that metal burden in fishes achieved a mean maximum accumulation towards the muscle, with concentrations below the international maximum permitted values. The estimated daily intakes calculated suggest that people would not experience significant health risks through fish consumption.
Collapse
Affiliation(s)
- Noelia S La Colla
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Carrindanga km. 7.5, Bahía Blanca, 8000, Argentina.
| | - Sandra E Botté
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Carrindanga km. 7.5, Bahía Blanca, 8000, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, Bahía Blanca 8000, Argentina.
| | - Jorge E Marcovecchio
- Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Carrindanga km. 7.5, Bahía Blanca, 8000, Argentina; Universidad de la Fraternidad de Agrupaciones Santo Tomás de Aquino, Gascón 3145, Mar del Plata 7600, Argentina; Universidad Tecnológica Nacional - FRBB, 11 de Abril 445, Bahía Blanca 8000, Argentina.
| |
Collapse
|
21
|
Zhang J, Wu S, Xu Z, Wang M, Man YB, Christie P, Liang P, Shan S, Wong MH. The role of sewage sludge biochar in methylmercury formation and accumulation in rice. Chemosphere 2019; 218:527-533. [PMID: 30500713 DOI: 10.1016/j.chemosphere.2018.11.090] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/20/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Methylmercury (MeHg) can accumulate in rice and this has been demonstrated to be an important human MeHg exposure pathway. How to reduce MeHg concentrations in rice grains has therefore become a very important public health issue. Previous studies have investigated the role of plant biochars on Hg bioavailability in soils but knowledge of the influence of sewage sludge biochars (SSB) on MeHg formation and bioaccumulation in different soils is lacking. In the present study, SSB was applied to two Hg-contaminated soils, one acid and the other calcareous, in an attempt to stabilize MeHg in the soil and further mitigate MeHg accumulation in rice grains. The results indicate that the presence of SSB may promote Hg methylation in an acid soil. Moreover, MeHg concentrations increased gradually during rice growth, perhaps due to the release of root exudates. SSB can inhibit both MeHg and total Hg (THg) accumulation in different rice tissues. Both MeHg and THg decreased in the rice grains by up to 73.4 and 81.9%, respectively. However, the inhibitory effect was less pronounced in a calcareous soil. This study further demonstrates that biochar application can inhibit MeHg accumulation in soils despite the promotion of MeHg formation in soil by SSB application. However, an effect of biochar on MeHg accumulation was observed only in the acid soil. These results are useful in managing applications of biochars to Hg-contaminated paddy fields.
Collapse
Affiliation(s)
- Jin Zhang
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Shengchun Wu
- Zhejiang Province Key Laboratory of Soil Contamination and Bioremediation, School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Zhentao Xu
- Zhejiang Province Key Laboratory of Soil Contamination and Bioremediation, School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Minyan Wang
- Jiyang College, Zhejiang Agriculture and Forestry University, Zhuji, 311800, China
| | - Yu Bon Man
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong SAR
| | - Peter Christie
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Peng Liang
- Zhejiang Province Key Laboratory of Soil Contamination and Bioremediation, School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
| | - Shengdao Shan
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China.
| | - Ming Hung Wong
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong SAR
| |
Collapse
|
22
|
Pecoraro GD, Hortellani MA, Hagiwara YS, Braga ES, Sarkis JE, Azevedo JS. Bioaccumulation of Total Mercury (THg) in Catfish (Siluriformes, Ariidae) with Different Sexual Maturity from Cananéia-Iguape Estuary, SP, Brazil. Bull Environ Contam Toxicol 2019; 102:175-179. [PMID: 30386891 DOI: 10.1007/s00128-018-2485-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/30/2018] [Indexed: 06/08/2023]
Abstract
In order to improve the knowledge of total mercury (THg) bioaccumulation in bioindicator species of sea catfish (Siluriformes, Ariidae) and taking into account the relatively recent approach with respect to estuarine fish on the Brazilian coast, 65 individuals were caught in the northern and southern regions of the Cananeia estuary to determine the concentration of the THg in muscles, gills, gonads and kidney of the Cathorops spixii and Genidens genidens specimens. The difference in the THg accumulation associated to the maturity of the catfish reflects a differential metabolism regarding THg bioaccumulation in adults (males and females) and juveniles. These observations reinforce the importance of considering the maturity of the individual in order to understand the bioaccumulation and metabolism of fish under different environmental stress and conditions. Furthermore, abiotic conditions such as salinity should be evaluated in association with metabolic/biological conditions of the fish's bioindicators, especially in environments with large natural or anthropogenic transition gradients.
Collapse
Affiliation(s)
- Giulliana D Pecoraro
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, Brazil
| | | | - Yuri S Hagiwara
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, Brazil
| | - Elisabete S Braga
- Institute of Oceanography, University of São Paulo, São Paulo, Brazil
| | - Jorge E Sarkis
- Institute of Energy and Nuclear Research, São Paulo, Brazil
| | - Juliana S Azevedo
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, Brazil.
| |
Collapse
|
23
|
Ali S, Hussain S, Khan R, Mumtaz S, Ashraf N, Andleeb S, Shakir HA, Tahir HM, Khan MKA, Ulhaq M. Renal toxicity of heavy metals (cadmium and mercury) and their amelioration with ascorbic acid in rabbits. Environ Sci Pollut Res Int 2019; 26:3909-3920. [PMID: 30547340 DOI: 10.1007/s11356-018-3819-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
Cadmium and mercury are among the most toxic and dangerous environmental pollutants that may cause fatal implications. Vitamin C is an important chain-breaking antioxidant and enzyme co-factor against heavy metals. The objective of the present study was to evaluate the toxicological effects of cadmium chloride, mercuric chloride, and their co-administration on biochemical parameters of blood serum and metal bioaccumulation in kidneys and also to elucidate the protective effect of vitamin C in rabbits against these metals. In the current research, cadmium chloride (1.5 mg/kg), mercuric chloride(1.2 mg/kg), and vitamin C (150 mg/kg of body weight) were orally administered to eight treatment groups of the rabbits (1, control; 2, vitamin; 3, CdCl2; 4, HgCl2; 5, vitamin + CdCl2; 6, vitamin + HgCl2; 7, CdCl2 + HgCl2, and 8, vitamin + CdCl2 + HgCl2). After the biometric measurements of all experimental rabbits, biochemical parameters viz. creatinine, cystatin C, uric acid, and alkaline phosphatase (ALP) and metal bioaccumulation were determined using commercially available kits and atomic absorption spectrophotometer, respectively. The levels of creatinine (28.3 ± 1.1 μmol/l), cystatin C (1932.5 ± 38.5 ηg/ml), uric acid (4.8 ± 0.1 mg/day), and ALP (51.6 ± 1.1 IU/l) were significantly (P < 0.05) increased due to administration of mercuric chloride but in the presence of vitamin C, the effects of mercuric chloride on creatinine (21.9 ± 1.4 μmol/l), cystatin C (1676.2 ± 42.2 ηg/ml), uric acid (3.9 ± 0.1 mg/day), and ALP (43.3 ± 0.8 IU/l) were less as compared to metal-exposed specimens. Similar results were found in rabbits treated with cadmium chloride and vitamin C and also with co-administration of both metals and vitamin C. Because of the bio-accumulative nature of cadmium chloride and mercuric chloride, these metals were accumulated in kidneys of rabbits, which might lead to deleterious effects. The results of the present study provide an insight into the toxicity of the cadmium chloride, mercuric chloride, and/or their combination on biochemical parameters as well as kidneys of the rabbits and the ameliorating potential of vitamin C against these metals is also evaluated.
Collapse
Affiliation(s)
- Shaukat Ali
- Department of Zoology, Government College University, Lahore, Pakistan.
| | - Sidra Hussain
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Rida Khan
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Shumaila Mumtaz
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Nasra Ashraf
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Saiqa Andleeb
- Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | | | | | | | - Mazhar Ulhaq
- Department of Veterinary Biomedical Sciences, PMAS Arid Agriculture University, Rawalpindi, PK-46300, Pakistan
| |
Collapse
|
24
|
Bergés-Tiznado ME, Fernando Márquez-Farías J, Cristina Osuna-Martínez C, Torres-Rojas YE, Galván-Magaña F, Páez-Osuna F. Patterns of mercury and selenium in tissues and stomach contents of the dolphinfish Coryphaena hippurus from the SE Gulf of California, Mexico: Concentrations, biomagnification and dietary intake. Mar Pollut Bull 2019; 138:84-92. [PMID: 30660317 DOI: 10.1016/j.marpolbul.2018.11.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 11/11/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Selenium and mercury were evaluated in tissues and stomachs of the dolphinfish Coryphaena hippurus from two sites in the Southeastern Gulf of California. Hg levels were consistently low and exhibited the following patterns: muscle (0.14 ± 0.01 μg/g wet weight) followed by kidney (0.12 ± 0.02 μg/g), liver (0.11 ± 0.01 μg/g), and gonads (0.04 ± 0.00 μg/g). The maximum of Se was found in the kidney (5.60 ± 0.40 μg/g) and the minimum in muscle (0.60 ± 0.01 μg/g). All the Se:Hg molar ratios were between 3.7 and 697.1, with the minimum in muscle and the highest in gonads. The results indicate a contrasting behavior biomagnification of Hg and Se; smaller fish (<80 cm FL) did not exhibit biomagnification, in contrast with larger fish (>90 cm FL: 100% for Hg; 65% for Se). These results appear to be related to different feeding habits and availability of prey.
Collapse
Affiliation(s)
- Magdalena E Bergés-Tiznado
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Unidad Académica Mazatlán, P.O. Box 811, C.P. 82000 Mazatlán, Sinaloa, Mexico; Universidad Politécnica de Sinaloa, Carretera Municipal Libre Mazatlán-Higueras km. 3, C.P. 82199 Mazatlán, Sinaloa, Mexico
| | - J Fernando Márquez-Farías
- Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen S/N Col. Centro, C.P. 82000 Mazatlán, Sinaloa, Mexico
| | - C Cristina Osuna-Martínez
- Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Paseo Claussen S/N Col. Centro, C.P. 82000 Mazatlán, Sinaloa, Mexico
| | - Yassir Edén Torres-Rojas
- Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, P.O. Box 811, C.P. 82000 Mazatlán, Sinaloa, Mexico; Instituto de Ecología, Pesquerías y Oceanografía del Golfo de México, Universidad Autónoma de Campeche (EPOMEX-UAC), Campus 6. Av. Héroe de Nacozari #480, C.P. 24029, Campeche, Campeche, Mexico
| | - Felipe Galván-Magaña
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN S/N Col. Playa de Santa Rita, C.P. 23096 La Paz, Baja California Sur, Mexico
| | - Federico Páez-Osuna
- Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, P.O. Box 811, C.P. 82000 Mazatlán, Sinaloa, Mexico; Miembro de El Colegio de Sinaloa, Antonio Rosales 435 Pte, Culiacán, Sinaloa, Mexico.
| |
Collapse
|
25
|
Polak-Juszczak L. Distribution of organic and inorganic mercury in the tissues and organs of fish from the southern Baltic Sea. Environ Sci Pollut Res Int 2018; 25:34181-34189. [PMID: 30288672 PMCID: PMC6245018 DOI: 10.1007/s11356-018-3336-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 09/25/2018] [Indexed: 05/27/2023]
Abstract
The aim of this study was to determine the distribution of total mercury (THg), methylmercury (CH3Hg+), and inorganic mercury (Hginorg) in the tissues and organs of fish depending on species, tissue, and organ, and their bioaccumulation in tissues and biomagnification throughout the trophic web. The study included four species of fish (herring, sprat, cod, and eel) from the southern Baltic Sea. The concentrations of the different forms of mercury were determined in tissues and internal organs. Intra-specific differences in levels of THg, CH3Hg+, and Hginorg in the tissues and organs were determined. Muscle contained the highest proportions of THg and CH3Hg+ in comparison to that in the internal organs. Differences in concentrations of THg, CH3Hg+, and Hginorg in the tissues and organs of fish were related to their preferred prey. The bioaccumulation of CH3Hg+ in the tissues and organs of predatory fish at the highest trophic levels was greater than in the liver and digestive tract of fish species at lower trophic levels, in which Hginorg predominated. The high concentrations of CH3Hg+ in eel and cod and the low levels in herring and sprat were linked with their food and the transfer of this element among species. The results suggested that the type of food, feeding habits, and trophic position were important parameters that influenced the transfer and biomagnification of mercury in fish.
Collapse
Affiliation(s)
- Lucyna Polak-Juszczak
- Department of Food and Environmental Chemistry, National Marine Fisheries Research Institute, ul. Kollataja 1, 81-332, Gdynia, Poland.
| |
Collapse
|
26
|
Xu Q, Zhao L, Wang Y, Xie Q, Yin D, Feng X, Wang D. Bioaccumulation characteristics of mercury in fish in the Three Gorges Reservoir, China. Environ Pollut 2018; 243:115-126. [PMID: 30172117 DOI: 10.1016/j.envpol.2018.08.048] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/12/2018] [Accepted: 08/16/2018] [Indexed: 06/08/2023]
Abstract
Newly constructed reservoirs were recognized as hotspot of mercury (Hg) methylation, and then methylmercury (MeHg) accumulation in food chains. The risk of elevated MeHg concentrations in fish is one of the most important concerns in newly constructed reservoirs. The Three Gorges Reservoir (TGR) is one of the largest reservoirs in the world. However, the distribution and bioaccumulation characteristics of Hg species within the food chains and its potential ecological risk in the TGR remain poorly understood. In this study, 264 fish individuals covering 18 species were collected from the TGR. Total mercury (THg) and MeHg concentrations in different organs (gill, heart, liver, muscle and swim bladder) of fish species were analyzed; the values of δ13C and δ15N in fish muscle were determined as well to reveal the biomagnification properties of Hg in food chains. Our results showed that concentrations of THg (0.5-272 ng g-1, w.w.) and MeHg (0.1-199 ng g-1, w.w.) in fish muscle from the TGR ubiquitously fall below the safe fish consumption limit on Hg recommended by WHO (500 ng g-1, w.w.) and the US-EPA Water Quality Criterion for MeHg (300 ng g-1, w.w.). The short food web jointly with the limited trophic magnification factor in the TGR explained the relatively low Hg concentrations in predators. Among the five fish organs, muscle represented the highest Hg concentrations, followed by heart, liver, swim bladder, and gill, suggesting that muscle has the highest ability to accumulate Hg compared to the other organs. More importantly, no discernible "reservoir effect" was observed in the TGR within the initial few years after impoundment due to its special eco-environment including: 1) neutral and slightly alkaline pH and low dissolved organic carbon of water, 2) less vegetation coverage in inundated areas, 3) simple food web.
Collapse
Affiliation(s)
- Qinqin Xu
- College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Lei Zhao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Yongmin Wang
- College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Qing Xie
- College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Deliang Yin
- College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Dingyong Wang
- College of Resources and Environment, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, PR China.
| |
Collapse
|
27
|
Li J, Haffner GD, Wang D, Zhang L, Li Y, Deng H, Drouillard KG. Protein and lipid growth rates regulate bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (Hypophthalmichthys molitrix) from the Three Gorges Reservoir, China. Environ Pollut 2018; 243:152-162. [PMID: 30172121 DOI: 10.1016/j.envpol.2018.08.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 08/18/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
This study evaluated the effect of growth of different tissue compartments on the bioaccumulation of mercury (Hg) and polychlorinated biphenyls (PCBs) in Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (Hypophthalmichthys nobilis) from the Three Gorges Reservoir (TGR), China. A non-steady state bioenergetics/toxicokinetic model was developed to simulate PCB and Hg concentrations in these two species and compared with field data. Simulations using constant whole body growth rate and constant tissue to whole body weight ratios were contrasted against simulations adopting age specific whole body and tissue/age specific growth rates for their goodness of fit to field data. The simulations using age/tissue specific growth rates demonstrated better fit to field data for PCBs compared to the constant growth rate models (22% improved R2), while both models explained similar variation in Hg concentration data. Both species demonstrated higher growth rates of lipids (on a daily basis) relative to whole body and protein contributing to higher growth dilution of PCBs compared to Hg. Although stable isotope data indicated some degree of diet and/or habitat shift, simulations assuming a constant diet concentration explained between 36 and 40% of the variation in fish concentrations for both contaminants and fish species. This study demonstrates that differences in the bioaccumulation rate of PCBs and Hg by Asian carp can be partially explained by differences in the growth rates of key tissue storage compartments associated with each contaminant. These differences in chemical-specific growth dilution subsequently contribute to differences in chemical retention and bioaccumulation patterns of Hg and PCBs by fish.
Collapse
Affiliation(s)
- Jiajia Li
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.
| | - G Douglas Haffner
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China
| | - Dingyong Wang
- College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China
| | - Lei Zhang
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China
| | - Yun Li
- College of Animal Science and Technology, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China
| | - Huatang Deng
- College of Animal Science and Technology, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China
| | - Kenneth G Drouillard
- Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| |
Collapse
|
28
|
Debeljak M, van Elteren JT, Špruk A, Izmer A, Vanhaecke F, Vogel-Mikuš K. The role of arbuscular mycorrhiza in mercury and mineral nutrient uptake in maize. Chemosphere 2018; 212:1076-1084. [PMID: 30286537 DOI: 10.1016/j.chemosphere.2018.08.147] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/22/2018] [Accepted: 08/28/2018] [Indexed: 06/08/2023]
Abstract
This work aimed to study the role of arbuscular mycorrhizal fungi (AMF) in Hg and major mineral nutrient uptake and tissue localization of these elements in the roots of maize plants. Maize plants were grown in pots filled with non- and Hg-contaminated substrate (50 μg Hg g-1 as HgCl2) and inoculated with two types of AMF inocula: a) Glomus sp. originating from Hg-polluted soil of a former Hg smelting site in Idrija, Slovenia, and b) commercial AM inoculum Symbivit. Controls were inoculated by corresponding bacterial extracts only. Tissue localization of Hg and major mineral nutrients was performed by laser ablation-inductively coupled plasma-mass spectroscopy (LA-ICP-MS) on cryofixed and freeze-dried root cross-sections. AMF colonization increased plant biomass in non-contaminated substrate, while this effect was not seen in Hg-contaminated substrate. Hg increased total plant biomass more than AMF inoculation, possibly through hormetic effects. AMF increased Hg uptake into the roots, as well as Hg transfer to the shoots. AMF affected plant mineral nutrient uptake, depending on the type of AMF inoculum and the presence of Hg. In the roots, Hg was mainly localized in rhizodermis and endodermis, followed by the cortex and the central cylinder. Higher Hg concentrations were detected in the central cylinder of AM plants than in that of the controls, pointing to a higher Hg mobility and potential bioavailability in AMF inoculated plants.
Collapse
Affiliation(s)
- Marta Debeljak
- Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Johannes T van Elteren
- Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Ana Špruk
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Andrei Izmer
- Department of Chemistry, Atomic & Mass Spectrometry A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281-S12, BE-9000 Ghent, Belgium
| | - Frank Vanhaecke
- Department of Chemistry, Atomic & Mass Spectrometry A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281-S12, BE-9000 Ghent, Belgium
| | - Katarina Vogel-Mikuš
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
| |
Collapse
|
29
|
Visha A, Gandhi N, Bhavsar SP, Arhonditsis GB. Assessing mercury contamination patterns of fish communities in the Laurentian Great Lakes: A Bayesian perspective. Environ Pollut 2018; 243:777-789. [PMID: 30224205 DOI: 10.1016/j.envpol.2018.07.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/15/2018] [Accepted: 07/16/2018] [Indexed: 05/27/2023]
Abstract
We examine the spatio-temporal trends of mercury, a well-known global legacy contaminant, in eleven fish species across all of the Canadian Great Lakes. These particular fish species are selected based on their ecological, commercial, and recreational importance to the biodiversity and fishing industry of the Great Lakes. We present a two-pronged Bayesian methodological framework to rigorously assess mercury temporal trends across multiple fish species and locations. In the first part of our analysis, we develop dynamic linear models to delineate the total mercury levels and rates of change, while explicitly accounting for the covariance between fish length and mercury levels in fish tissues. We then use hierarchical modelling to evaluate the spatial variability of mercury contamination between nearshore and offshore locations, as well as to examine the hypothesis that invasive species have induced distinct shifts on fish mercury contamination trends. Our analysis suggests that the general pattern across the Great Lakes was that the elevated mercury concentrations during the 1970s had been subjected to a declining trend throughout the late 1980s/early 1990s, followed by a gradual stabilization after the late 1990s/early 2000s. The declining trend was more pronounced with top fish predators, whereas benthivorous fish species mainly underwent wax-and-wane cycles with a weaker evidence of a long-term declining trend. Historically contaminated regions, designated as Areas of Concern, and bays receiving riverine inputs are still characterized by mercury concentrations that can lead to consumption restrictions. Lake Erie displayed the lowest mercury levels across all the fish species examined. However, several species of commercial importance showed a reversing (increasing) trend in the 2000s, although their current levels do not pose any major concerns for consumption advisories. These recent trend reversals can be linked with systematic shifts in energy trophodynamics along with the food web alterations induced from the introduction of non-native species, and the potentially significant fluxes from the atmosphere.
Collapse
Affiliation(s)
- Ariola Visha
- Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario, M1C 1A4, Canada
| | - Nilima Gandhi
- Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario, M1C 1A4, Canada
| | - Satyendra P Bhavsar
- Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario, M1C 1A4, Canada; Ontario Ministry of Environment, Conservation and Parks, Toronto, Ontario, M9P 3V6, Canada
| | - George B Arhonditsis
- Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario, M1C 1A4, Canada.
| |
Collapse
|
30
|
Pelcová P, Vičarová P, Dočekalová H, Poštulková E, Kopp R, Mareš J, Smolíková V. The prediction of mercury bioavailability for common carp (Cyprinus carpio L.) using the DGT technique in the presence of chloride ions and humic acid. Chemosphere 2018; 211:1109-1112. [PMID: 30223326 DOI: 10.1016/j.chemosphere.2018.07.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/24/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
The ability of the DGT technique to predict Hg2+ bioavailability for input tissues (skin, gills, and scales) of common carp in the presence of chloride ions and humic acid (HA) was evaluated. The mercury accumulation by the DGT units and input tissues of carp decreased with an increasing concentration of chloride ions (29-180 mg L-1) and HA (0-5 mg L-1). In the presence of chloride ions and HA, statistically significant correlations (Pearson's correlation coefficients 0.731-0.954) were determined between the rate of mercury accumulation by input tissues of carp and the rate of mercury accumulation by the DGT units. The laboratory experiments suggest the possibility of using the DGT technique for predicting the mercury bioaccumulation in natural aquatic ecosystems instead of commonly used input tissues of fish.
Collapse
Affiliation(s)
- Pavlína Pelcová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic.
| | - Petra Vičarová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic
| | | | - Eva Poštulková
- Department of Zoology, Fisheries, Hydrobiology and Apiculture, Mendel University in Brno, Czech Republic
| | - Radovan Kopp
- Department of Zoology, Fisheries, Hydrobiology and Apiculture, Mendel University in Brno, Czech Republic
| | - Jan Mareš
- Department of Zoology, Fisheries, Hydrobiology and Apiculture, Mendel University in Brno, Czech Republic
| | - Vendula Smolíková
- Department of Chemistry and Biochemistry, Mendel University in Brno, Czech Republic
| |
Collapse
|
31
|
Heiker LM, Adams RA, Ramos CV. Mercury Bioaccumulation in Two Species of Insectivorous Bats from Urban China: Influence of Species, Age, and Land Use Type. Arch Environ Contam Toxicol 2018; 75:585-593. [PMID: 30027306 DOI: 10.1007/s00244-018-0547-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Mercury (Hg) is a widespread, toxic pollutant, and China is the world's largest emitter. We investigated Hg concentrations of fur in Japanese pipistrelles (Pipistrellus abramus) and Chinese noctules (Nyctalus plancyi) from Chengdu, Sichuan Province, in relation to degree of urbanization. Bats were mist-netted in June and July 2013, and the fur was analyzed via atomic absorption. Statistical comparisons were made between ages, species, and site types with unpaired t tests and between Hg concentration and body condition with Spearman's rank correlations. Across sites, adult pipistrelles (n = 10) had significantly greater concentrations than adult noctules (n = 16). Adult N. plancyi (n = 16) had significantly greater concentrations than juvenile N. plancyi (n = 14). Contrary to our predictions, there was no significant difference in Hg values between urban (n = 3) and peri-urban (n = 6) locations for P. abramus. While small sample sizes precluded additional comparisons, the highest value (33 mg/kg) came from an adult female P. abramus in the agricultural area. The relationship between body condition and Hg concentration was insignificant. However, most pipistrelles (7/13) and no noctules (0/31) had concentrations > 10 mg/kg, a threshold associated with disruption of homeostatic control and mobility. All bats had concentrations > 0.2 mg/kg, which is associated with compromised immunity. These are the first published records of contaminant concentrations from bats in China. For future studies, we recommend P. abramus as a regional bioindicator, longer term assessments of pre- and post-exposure effects, and simultaneous assessment of blood and fur Hg concentrations.
Collapse
Affiliation(s)
- Laura M Heiker
- University of Northern Colorado, 501 20th St., Greeley, CO, 80639, USA.
| | - Rick A Adams
- University of Northern Colorado, 501 20th St., Greeley, CO, 80639, USA
| | - Claire V Ramos
- University of Colorado, Pueblo, 2200 Bonforte Blvd., Pueblo, CO, 81001, USA
| |
Collapse
|
32
|
Sánchez-Muros MJ, Morote E, Gil C, Ramos-Miras JJ, Torrijos M, Rodríguez Martin JA. Mercury contents in relation to biometrics and proximal composition and nutritional levels of fish eaten from the Western Mediterranean Sea (Almería bay). Mar Pollut Bull 2018; 135:783-789. [PMID: 30301098 DOI: 10.1016/j.marpolbul.2018.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/13/2018] [Accepted: 08/01/2018] [Indexed: 06/08/2023]
Abstract
Total liver and muscle mercury, and muscular composition, biometrics and trophic levels, were determined in four species (Mullus surmuletus, Merluccius merluccius, Auxis rochei and Scomber japonicus) of the Mediterranean Sea (Almería Bay, Spain). Mercury levels did not exceed the maximum residue limit, and M. merluccius obtained the highest level in muscle. Considerable variations in Hg content among individuals were observed in non-gregarious species. A positive correlation between Hg and trophic level or length was found in muscle, but not in liver. Organs (liver or muscle) with major Hg accumulation depend on species; muscle in M. merluccius and liver in S. japonicus. The results indicate that Hg levels in fish depend on intra- and interspecies factors that should be taken into account in systems to monitor Hg levels.
Collapse
Affiliation(s)
- M J Sánchez-Muros
- Dept. Biology, and Geology, University of Almería, Ctra. de Sacramento s/n, La Cañada, 04120 Almería, Spain.
| | - E Morote
- Dept. Biology, and Geology, University of Almería, Ctra. de Sacramento s/n, La Cañada, 04120 Almería, Spain
| | - C Gil
- Dept. Edaphology and Agricultural Chemistry, University of Almería, Ctra. de Sacramento s/n, La Cañada, 04120 Almería, Spain
| | - J J Ramos-Miras
- Dept. Edaphology and Agricultural Chemistry, University of Almería, Ctra. de Sacramento s/n, La Cañada, 04120 Almería, Spain
| | - M Torrijos
- Dept. Environment, National Institute of Agricultural and Food Research and Technology (I.N.I.A), Ctra. de A Coruña 7.5, 28040 Madrid, Spain
| | - J A Rodríguez Martin
- Dept. Environment, National Institute of Agricultural and Food Research and Technology (I.N.I.A), Ctra. de A Coruña 7.5, 28040 Madrid, Spain
| |
Collapse
|
33
|
Kwasigroch U, Bełdowska M, Jędruch A, Saniewska D. Coastal erosion-a "new" land-based source of labile mercury to the marine environment. Environ Sci Pollut Res Int 2018; 25:28682-28694. [PMID: 30097984 PMCID: PMC6153678 DOI: 10.1007/s11356-018-2856-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 07/26/2018] [Indexed: 05/15/2023]
Abstract
Mercury (Hg) can be introduced into the marine environment in many different ways. In the case of the Baltic Sea, rivers and atmospheric deposition are the predominant ones. However, in the face of ongoing climate change, a new potential source, coastal erosion, is starting to become more important and is currently considered to be the third largest source of Hg in the Gdansk Basin region. It is especially significant along sections of coastline where, due to the higher frequency of extreme natural phenomena such as storms, heavy rains, and floods, increased erosion processes have already been noted. Cliffs, which account for about 20% of the Polish coastline, are particularly vulnerable. The aim of the study was to estimate the annual load of labile Hg entering the Gdansk Basin as a result of coastal erosion. Samples of down-core sediments (0-65 cm) were collected in the years 2016-2017 from selected cliffs situated in the Gulf of Gdansk area. The thermodesorption method was used to distinguish between labile and stable fractions of Hg. Considering the mean total Hg concentrations in the collected sediments (9.7 ng g-1) and the mean share of labile (64%), bioavailable mercury, it was estimated that the load of labile Hg originating from coastal erosion entering the Gdansk Basin is 10.0 kg per year. The load can increase by up to 50% in the case of episodic abrasion events during heavy storms and rains.
Collapse
Affiliation(s)
- Urszula Kwasigroch
- Institute of Oceanography, University of Gdańsk, Piłsudskiego 46, 81-378, Gdynia, Poland.
| | - Magdalena Bełdowska
- Institute of Oceanography, University of Gdańsk, Piłsudskiego 46, 81-378, Gdynia, Poland
| | - Agnieszka Jędruch
- Institute of Oceanography, University of Gdańsk, Piłsudskiego 46, 81-378, Gdynia, Poland
| | - Dominka Saniewska
- Institute of Oceanography, University of Gdańsk, Piłsudskiego 46, 81-378, Gdynia, Poland
| |
Collapse
|
34
|
Erasmus VN, Hamutenya S, Iitembu JA, Gamatham JC. Mercury concentrations in muscles and liver tissues of Cape monkfish (Lophius vomerinus) from the Northern Benguela, Namibia. Mar Pollut Bull 2018; 135:1101-1106. [PMID: 30301008 DOI: 10.1016/j.marpolbul.2018.08.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/11/2018] [Accepted: 08/19/2018] [Indexed: 06/08/2023]
Abstract
Cape monkfish (Lophius vomerinus) is one of the long-lived species and top predators in the northern Benguela region. Studies on bioaccumulation of mercury (Hg) in cape monkfish are limited. This study compared the total Hg concentration between monkfish muscle and liver tissue; and related the monkfish total Hg concentrations to fish body size and capture locations (depth and latitude). Monkfish specimens (n = 529) were collected from 2016 to 2018. The mean total Hg concentration was 0.126 ± 0.005 mg/kg in muscle tissues and 0.106 ± 0.005 mg/kg in liver tissues. No significant differences were observed between total Hg concentrations of muscles and liver tissues. Differences in Hg concentrations between monkfish length classes were observed. No significant correlation was found between total Hg concentrations and latitude. A significant increase of total Hg concentration with the depth was observed. The concentrations of Hg were below the World Health Organization (WHO limits for fish (0.5 mg/kg).
Collapse
Affiliation(s)
- Victoria Ndinelago Erasmus
- National Marine Information and Research Centre (NatMIRC), Ministry of Fisheries and Marine Resources, Strand Street, Box 912, Swakopmund, Namibia
| | - Stephanus Hamutenya
- National Marine Information and Research Centre (NatMIRC), Ministry of Fisheries and Marine Resources, Strand Street, Box 912, Swakopmund, Namibia
| | - Johannes Angala Iitembu
- Department of Fisheries and Aquatic Sciences, University of Namibia, Private Bag 462, Hentiesbay, Namibia.
| | - Johnny Charles Gamatham
- National Marine Information and Research Centre (NatMIRC), Ministry of Fisheries and Marine Resources, Strand Street, Box 912, Swakopmund, Namibia
| |
Collapse
|
35
|
Fiori CDS, Rodrigues APDC, Vieira TC, Sabadini-Santos E, Bidone ED. An alternative approach to bioaccumulation assessment of methyl-Hg, total-Hg, Cd, Pb, Zn in bivalve Anomalocardia brasiliana from Rio de Janeiro bays. Mar Pollut Bull 2018; 135:418-426. [PMID: 30301054 DOI: 10.1016/j.marpolbul.2018.07.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 07/05/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
We present an alternative approach for establishing in situ bioaccumulation assessment of methyl-Hg (MeHg), total-Hg, Cd, Pb and Zn in bivalve Anomalocardia brasiliana from four bays of Rio de Janeiro presenting varying degrees of eutrophication, acid volatile sulfides (2-55 μmol g-1), simultaneously extracted metals (SEM) and total metals (TM) in sediments. Using metal concentrations of composite samples from three size classes of bivalve and their incorporation rates (IR = metal concentration / total length), which depend on exposure time, we calculated asymptotic IR and respective consequent metal concentrations. Both IR and the metal concentration presented inverse relationships with total length (excepting MeHg) and bay contamination. Lead and zinc concentrations were above Brazilian legal criteria in the most anoxic and contaminated bay, suggesting significant metal bioavailability (SEM/TM between 8% and 63%).
Collapse
Affiliation(s)
- Cristiane da Silveira Fiori
- de Pós-Graduação em Geociências (Geoquímica), Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil
| | - Ana Paula de Castro Rodrigues
- de Pós-Graduação em Geociências (Geoquímica), Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil
| | - Thatianne Castro Vieira
- de Pós-Graduação em Geociências (Geoquímica), Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil
| | - Elisamara Sabadini-Santos
- de Pós-Graduação em Geociências (Geoquímica), Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
| | - Edison Dausacker Bidone
- de Pós-Graduação em Geociências (Geoquímica), Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil
| |
Collapse
|
36
|
Ge M, Liu G, Liu Y, Yuan Z, Liu H. An 87-year sedimentary record of mercury contamination in the Old Yellow River Estuary of China. Mar Pollut Bull 2018; 135:47-54. [PMID: 30301061 DOI: 10.1016/j.marpolbul.2018.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 06/27/2018] [Accepted: 07/02/2018] [Indexed: 06/08/2023]
Abstract
A sediment core, spanning from the year 1925 ± 3.03 to 2012, was collected for analyzing historical distribution of mercury (Hg) in the Old Yellow River Estuary (OYRE), China. The Hg concentrations in the sediment core ranged from 14 to 351 ng g-1, with the high values occurred in the middle layers (1960-1996), which may be resulted from intensive human activities during this period, such as oil exploitation and booming of petrochemical industry, salt chemical industry and chlor-alkali plants. A significant positive correlation was found between THg and loss on ignition (LOI). The main fraction of Hg existed in residual part while the fraction that was easy to leach out from sediments accounted for only a small portion according to the results of BCR sequential extraction procedure. Multiple ecological risks indices and guidelines of Hg indicated that the sedimentary record presented an "intermediate state" for Hg contamination in the OYRE.
Collapse
Affiliation(s)
- Meng Ge
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China; University of Science and Technology of China-City University of Hong Kong Joint Advanced Research Centre, Suzhou, Jiangsu, 215123, China
| | - Guijian Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China.
| | - Yuan Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zijiao Yuan
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Houqi Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|
37
|
Wang XN, Gu YG, Wang ZH, Ke CL, Mo MS. Biological risk assessment of heavy metals in sediments and health risk assessment in bivalve mollusks from Kaozhouyang Bay, South China. Mar Pollut Bull 2018; 133:312-319. [PMID: 30041320 DOI: 10.1016/j.marpolbul.2018.05.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/20/2018] [Accepted: 05/26/2018] [Indexed: 06/08/2023]
Abstract
The concentrations of heavy metals (Cd, Pb, Cr, Ni, Cu, Zn, Hg and As) in surface sediments and bivalve mollusks in Kaozhouyang Bay were investigated. A biological risk analysis of the sediments indicated that ten sites (about 76.92% of the total number of sites) had a 21% incidence probability of toxicity. A health risk analysis of the bivalve mollusks indicated that Cu and As posed low risks to consumer health. On the basis of the target hazard quotient (THQ), adverse effects may occur based on total THQ (TTHQ). The highest TTHQ was found in the species, Ostrea rivularis, which had the highest capacity for the bioaccumulation (factor > 38) of Cd.
Collapse
Affiliation(s)
- Xu-Nuo Wang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, No. 213, Huadu Avenue East, Guangzhou 510800, China
| | - Yang-Guang Gu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Key laboratory of Fishery Ecology and Environment, Guangdong Province, Guangzhou 510300, China; Key laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou 510300, China.
| | - Zeng-Huan Wang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, No. 213, Huadu Avenue East, Guangzhou 510800, China
| | - Chang-Liang Ke
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, No. 213, Huadu Avenue East, Guangzhou 510800, China
| | - Meng-Song Mo
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, No. 213, Huadu Avenue East, Guangzhou 510800, China
| |
Collapse
|
38
|
Zheng Z, Zhang M, Xiao Y, Wei L, Li C. Effect of Cys, GSH, and pH on Mercury Release from Tibetan Medicine Zuotai, β-HgS, and α-HgS in Artificial Gastrointestinal Juices. Biol Trace Elem Res 2018; 184:536-545. [PMID: 29130128 DOI: 10.1007/s12011-017-1185-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
Abstract
Zuotai, also named as "gTso thal", a known Tibetan medicinal mixture containing insoluble cubic crystal mercuric sulfide (β-HgS), has been used to treat diseases with long history. The mercury release ratio from Zuotai in gastrointestinal environment is one determinant factor for its bioavailability and biological effect. However, the information is still scarce now. Therefore, the study was designed to investigate the effect of sulfhydryl biomolecules [L-cysteine (Cys) and glutathione (GSH)] and pH on mercury dissociation from Zuotai, β-HgS, and hexagonal crystal mercuric sulfide (α-HgS) in artificial gastrointestinal juices or pure water with a 1:100 solid-liquid ratio. And, the digestion and peristalsis of gastrointestinal tract were simulated in vitro. The results showed the following trend for the mercury release ratio of Zuotai, artificial gastric juice > artificial intestinal juice > pure water, whereas the trend for β-HgS and α-HgS was as follows, artificial intestinal fluid > artificial gastric fluid > pure water. The mercury release ratios of Zuotai, β-HgS, and α-HgS significantly increased in artificial intestinal juice containing L-Cys or GSH compared to those without sulfhydryl biomolecules in the juice. However, in contrast to the results observed for β-HgS and α-HgS, the mercury release ratio of Zuotai was reduced remarkably in pure water and artificial gastric juice with Cys or GSH. And, we found that strong acidic or strong alkaline environments promoted the dissociation of mercury from Zuotai, β-HgS, and α-HgS. Taken together, current findings may contribute to other studies regarding clinical safety and bioavailability of the traditional drug Zuotai containing β-HgS.
Collapse
Affiliation(s)
- Zhiyuan Zheng
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- University of Chinese Academy of Sciences, Beijing, 100047, China
| | - Ming Zhang
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- University of Chinese Academy of Sciences, Beijing, 100047, China
| | - Yuancan Xiao
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China
| | - Lixin Wei
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China.
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China.
| | - Cen Li
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China.
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China.
| |
Collapse
|
39
|
Zhao T, Yu Z, Zhang J, Qu L, Li P. Low-thermal remediation of mercury-contaminated soil and cultivation of treated soil. Environ Sci Pollut Res Int 2018; 25:24135-24142. [PMID: 29948692 DOI: 10.1007/s11356-018-2387-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
In this study, low-thermal technology was used to treat the mercury contaminated farmland soil from a chemical plant in Guizhou Province, China. A series of field planting experiments were also aimed at determining the content of total and methyl-Hg in crop plants after thermal treatment. The results showed that the mercury concentration in soils was reduced about 70% from 255.74 mg/kg to 80.63 mg/kg when treated at 350 °C for 30 min in engineering-scale experiments, and the treated soil retained most of its original soil. Organic-bound and residual mercury in treated soil were reduced by 64.1 and 56.4% by means of a sequential extraction procedure, respectively. The total and methyl-mercury concentrations in crops decreased significantly, and the degree of soil mercury accumulation to crop roots has been reduced significantly. The total Hg concentrations in potato and corn were lower than the mercury tolerance limits for food in China, and the Hg concentration of radish was close to the limit. The technology provides a more sustainable remediation method for treating mercury-contaminated farmland soil in future engineering applications.
Collapse
Affiliation(s)
- Ting Zhao
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Zhi Yu
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
- Research and Design Institute of Environmental Science of Guizhou Province, Guiyang, 550023, China
| | - Junfang Zhang
- Research and Design Institute of Environmental Science of Guizhou Province, Guiyang, 550023, China
| | - Liya Qu
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China.
- Research and Design Institute of Environmental Science of Guizhou Province, Guiyang, 550023, China.
| | - Ping Li
- Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China
| |
Collapse
|
40
|
Oliveira AN, Pinheiro AM, Belém-Filho IJA, Fernandes LMP, Cartágenes SC, Ribera PC, Fontes-Júnior EA, Crespo-Lopez ME, Monteiro MC, Lima MO, Maia CSF. Unravelling motor behaviour hallmarks in intoxicated adolescents: methylmercury subtoxic-dose exposure and binge ethanol intake paradigm in rats. Environ Sci Pollut Res Int 2018; 25:21937-21948. [PMID: 29797195 DOI: 10.1007/s11356-018-2235-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
Methylmercury (MeHg) is a hazardous environmental pollutant, affecting Amazon basin communities by anthropogenic activities. The exact safe level of MeHg exposure is unclear, despite the efforts of health international societies to avoid mercury (Hg) poisoning. Central nervous system is severely impacted by Hg intoxication, reflecting on motor impairment. In addition, alcohol has been associated to an overall brain damage. According to lifestyle of Amazon riverside communities, alcohol intake occurs frequently. Thus, we investigated if continuous MeHg exposure at low doses during adolescence displays motor deficits (experiment 1). In the experiment 2, we examine if the co-intoxication (i.e. MeHg plus ethanol exposure) during adolescence intensify motor damage. In the experiment 1, Wistar adolescent rats (31 days old) received chronic exposure to low dose (CELD) of MeHg (40 μg/kg/day) for 35 days. For the experiment 2, five sessions of alcohol binge drinking paradigm (3ON-4OFF; 3.0 g/kg/day) were employed associated to MeHg intoxication. Motor behaviour was evaluated by the open field, pole test, beam walking and rotarod paradigms. CELDS of MeHg display motor function damage, related to hypoactivity, bradykinesia-like behaviour, coordination deficits and motor learning impairment. Co-intoxication of MeHg plus ethanol reduced cerebellar Hg content, however also resulted in motor behavioural impairment, as well as additive effects on bradykinesia and fine motor evaluation.
Collapse
Affiliation(s)
- Aline Nascimento Oliveira
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Alana Miranda Pinheiro
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Ivaldo Jesus Almeida Belém-Filho
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Luanna Melo Pereira Fernandes
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Sabrina Carvalho Cartágenes
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Paula Cardoso Ribera
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Enéas Andrade Fontes-Júnior
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | | | - Marta Chagas Monteiro
- Laboratório de Microbiologia e Imunologia Clinica, Faculdade de Ciências Farmacêuticas, UFPA, Belém, Brazil
| | - Marcelo Oliveira Lima
- Laboratório de Toxicologia, Seção de Meio Ambiente, Instituto Evandro Chagas, Belém, Pará, Brazil
| | - Cristiane Socorro Ferraz Maia
- Laboratório de Farmacologia da Inflamação e do Comportamento, Faculdade de Ciências Farmacêuticas, Universidade Federal do Pará (UFPA), Belém, Brazil.
| |
Collapse
|
41
|
Ruelas-Inzunza J, Šlejkovec Z, Mazej D, Fajon V, Horvat M, Ramos-Osuna M. Bioaccumulation of As, Hg, and Se in tunas Thunnus albacares and Katsuwonus pelamis from the Eastern Pacific: tissue distribution and As speciation. Environ Sci Pollut Res Int 2018; 25:19499-19509. [PMID: 29730759 DOI: 10.1007/s11356-018-2166-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
With the aim of knowing the distribution of As, Hg, and Se in skipjack (Katsuwonus pelamis, Linnaeus, 1758) and yellowfin tuna (Thunnus albacares, Bonnaterre, 1788) from the Eastern Pacific, elemental concentrations were determined in the muscle and liver; As species were also analyzed in the stomach content. Additionally, health risk for consumers was assessed. For both tunas, levels of As and Se were significantly higher (p < 0.05) in the liver than in the muscle. In K. pelamis, Hg concentrations in the muscle were significantly higher (p < 0.05) than those in the liver. In T. albacares, As, Hg, and Se showed a trend to increase with fish dimensions. Arsenic extractability was better in the muscle than in the liver of both species; in K. pelamis, As species were better extracted than in T. albacares. In both tuna species, the most extractable arsenic was arsenobetaine (AsB) and a minor part was dimethylarsinic acid (DMA). The liver contained mainly AsB with some DMA and arsenocholine (AsC). Hazard indexes (HI) indicated no risk from Hg and Se intake through these tuna species. Considering the individual contribution to the HI, Hg contributed more (80 to 86%) than Se. In the context of health risk, none of the As and Hg values were above the permissible limits; however, two samples of T. albacares (9%) and three samples of K. pelamis (12%) had Se concentrations over the limits. If Hg and Se in the edible portion of tuna are considered under the approach of the HBVSe, tuna consumption is beneficial.
Collapse
Affiliation(s)
- Jorge Ruelas-Inzunza
- Technological Institute of Mazatlán, Corsario 1 No. 203, Col Urías, 82070, Mazatlán, Sinaloa, Mexico.
| | - Zdenka Šlejkovec
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Darja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Vesna Fajon
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Mauricio Ramos-Osuna
- Technological Institute of Mazatlán, Corsario 1 No. 203, Col Urías, 82070, Mazatlán, Sinaloa, Mexico
| |
Collapse
|
42
|
Moura VL, de Lacerda LD. Contrasting Mercury Bioavailability in the Marine and Fluvial Dominated Areas of the Jaguaribe River Basin, Ceará, Brazil. Bull Environ Contam Toxicol 2018; 101:49-54. [PMID: 29845483 DOI: 10.1007/s00128-018-2368-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 05/23/2018] [Indexed: 06/08/2023]
Abstract
This study evaluates the influence of environmental and biological factors upon the mercury (Hg) concentrations in the aquatic fauna in the Lower Jaguaribe River Basin (LJRB) - NE, Brazil. Two campaigns conducted in 2015 in the fluvial (FDA) and in the marine-dominated (MDA) areas resulted in 830 organisms from 16 species collected (nine of finfish and seven of invertebrates). Among the invertebrates, the highest Hg concentration occurred in the crab Callinectes bocourti (201 ng g-1), while among the finfish the highest concentration was found in the ladyfish Elops saurus (109 ng g-1), both carnivorous and of high trophic level (TL). Intra-specific comparison showed significant higher Hg concentrations in individuals captured in the MDA. Also, Hg bioaccumulation rate in the shrimp Litopenaeus vannamei was much higher in the MDA. These results, point to a concomitant control of Hg bioavailability by physical-chemical variables along the estuarine gradient of the LJRB.
Collapse
Affiliation(s)
- Victor Lacerda Moura
- Coastal Biogeochemistry Laboratory, LABOMAR, Federal University of Ceará, Av. Abolição 3207, Meireles, Fortaleza, CE, 60.165-081, Brazil.
| | - Luiz Drude de Lacerda
- Coastal Biogeochemistry Laboratory, LABOMAR, Federal University of Ceará, Av. Abolição 3207, Meireles, Fortaleza, CE, 60.165-081, Brazil
| |
Collapse
|
43
|
Ritger AL, Curtis AN, Chen CY. Bioaccumulation of mercury and other metal contaminants in invasive lionfish (Pterois volitans/miles) from Curaçao. Mar Pollut Bull 2018; 131:38-44. [PMID: 29886962 PMCID: PMC5999044 DOI: 10.1016/j.marpolbul.2018.03.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
A wide range of ecological and environmental factors influence metal bioaccumulation in fish. Studies of mercury and other metal contaminants in invasive Indo-Pacific lionfish are limited, yet consumption of the invasive predator is increasingly utilized as a management strategy. In this study, we examined the effects of body size, body condition, sex, trophic level, carbon source, diet, depth and capture location on mercury concentrations in lionfish collected from Curaçao. In addition, we examined whether or not a local petroleum refinery is the source of metal contamination in lionfish. Mercury concentrations ranged from 0.008 to 0.106 mg/kg and we found no effect of the petroleum refinery on metal bioaccumulation in lionfish. Low concentrations of metal contaminants indicate lionfish from Curaçao are safe for human consumption.
Collapse
Affiliation(s)
- Amelia L Ritger
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, United States..
| | - Amanda N Curtis
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, United States
| | - Celia Y Chen
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, United States
| |
Collapse
|
44
|
Abass K, Huusko A, Knutsen HK, Nieminen P, Myllynen P, Meltzer HM, Vahakangas K, Rautio A. Quantitative estimation of mercury intake by toxicokinetic modelling based on total mercury levels in humans. Environ Int 2018; 114:1-11. [PMID: 29455008 DOI: 10.1016/j.envint.2018.02.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/08/2018] [Accepted: 02/14/2018] [Indexed: 06/08/2023]
Abstract
Mercury is a toxic metal that can be disseminated into the environment from both natural and anthropogenic sources. Human exposure to the metal stems mainly from food, and more particularly from the consumption of fish and other seafoods. Examining dietary exposure and measuring mercury levels in body tissues are two ways of estimating exposure to mercury. In this study, we utilized a modelling system consisting of three linear toxicokinetic models for describing the fate of methyl mercury, inorganic mercury, and metallic mercury in the body, in order to estimate daily intake of mercury as measured through total mercury concentrations in the blood. We then compared the results stemming from our modelling system to those of the detailed semi-quantitative food frequency questionnaire (FFQ) of the Norwegian Fish and Game (NFG) Study, a project that focused on dietary mercury exposure. The results indicate that toxicokinetic modelling based on blood levels gave higher daily intake values of mercury compared to those of the FFQ. Furthermore, the former had a wider range of estimates than the latter. The properties of the toxicokinetic model or limitations in the dietary exposure assessment could be posited as reasons for the differences between the respective methods. Moreover, the results may have been influenced by sources of mercury exposure that cannot be described as dietary, such as amalgam fillings.
Collapse
Affiliation(s)
- K Abass
- Arctic Health, Faculty of Medicine; and Thule Institute, University of Oulu, Finland.
| | - A Huusko
- Arctic Health, Faculty of Medicine; and Thule Institute, University of Oulu, Finland
| | - H K Knutsen
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Norway
| | - P Nieminen
- Medical Informatics and Statistics Research Group, University of Oulu, Finland
| | - P Myllynen
- Northern Laboratory Centre NordLab, Oulu FI-90220, Finland
| | - H M Meltzer
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Norway
| | - K Vahakangas
- Faculty of Health Sciences, School of Pharmacy/Toxicology, University of Eastern Finland, Finland
| | - A Rautio
- Arctic Health, Faculty of Medicine; and Thule Institute, University of Oulu, Finland
| |
Collapse
|
45
|
Chen MM, Lopez L, Bhavsar SP, Sharma S. What's hot about mercury? Examining the influence of climate on mercury levels in Ontario top predator fishes. Environ Res 2018; 162:63-73. [PMID: 29287181 DOI: 10.1016/j.envres.2017.12.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/16/2017] [Accepted: 12/20/2017] [Indexed: 06/07/2023]
Abstract
Mercury (Hg) levels in Ontario top predator fishes have been increasing in recent decades. These increases may be a result of many additive factors, including global climate change. Only recently has research been conducted on how climate change may impact Hg levels in freshwater fishes at large-scales. We examined the relationship between Hg trends and (1) local weather, (2) large-scale climate drivers, and (3) anthropogenic Hg emissions, in native cool water (walleye and northern pike) and warm water (smallmouth bass and largemouth bass) predatory fishes in Ontario, Canada, for historical (1970-1992) and recent (1993-2014) time periods. For each fish species studied, > 25% of Ontario's secondary watersheds shifted from historically declining to recently increasing fish Hg trends, and ≥ 50% of watersheds experienced increasing trends between 1993 and 2014. Recent fish Hg increased at up to 0.20µg/g/decade; which were significant (p < 0.05) for walleye, northern pike and smallmouth bass. Multiple linear regressions revealed a complex interplay of local weather, large-scale climate drivers, and anthropogenic Hg emissions influencing fish Hg levels. Recent Hg levels for walleye and largemouth bass increased with changes in global climate drivers, while higher precipitation influenced smallmouth bass Hg levels the most. Walleye Hg levels increased during the positive phases of global climate drivers, reflecting the local influence of local temperatures and precipitation indirectly. Differentiating the effects of climate-related parameters and emissions is increasingly crucial to assess how changing multiple environmental stressors may impact health of wildlife and humans consuming fish.
Collapse
Affiliation(s)
- Miranda M Chen
- Department of Biology, York University, 4700 Keele St, Toronto, ON, Canada M3J 1P3
| | - Lianna Lopez
- Department of Biology, York University, 4700 Keele St, Toronto, ON, Canada M3J 1P3
| | - Satyendra P Bhavsar
- Ontario Ministry of the Environment and Climate Change, 125 Resources Road, Toronto, ON, Canada M9P 3V6
| | - Sapna Sharma
- Department of Biology, York University, 4700 Keele St, Toronto, ON, Canada M3J 1P3.
| |
Collapse
|
46
|
Eagles-Smith CA, Silbergeld EK, Basu N, Bustamante P, Diaz-Barriga F, Hopkins WA, Kidd KA, Nyland JF. Modulators of mercury risk to wildlife and humans in the context of rapid global change. Ambio 2018; 47:170-197. [PMID: 29388128 PMCID: PMC5794686 DOI: 10.1007/s13280-017-1011-x] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Environmental mercury (Hg) contamination is an urgent global health threat. The complexity of Hg in the environment can hinder accurate determination of ecological and human health risks, particularly within the context of the rapid global changes that are altering many ecological processes, socioeconomic patterns, and other factors like infectious disease incidence, which can affect Hg exposures and health outcomes. However, the success of global Hg-reduction efforts depends on accurate assessments of their effectiveness in reducing health risks. In this paper, we examine the role that key extrinsic and intrinsic drivers play on several aspects of Hg risk to humans and organisms in the environment. We do so within three key domains of ecological and human health risk. First, we examine how extrinsic global change drivers influence pathways of Hg bioaccumulation and biomagnification through food webs. Next, we describe how extrinsic socioeconomic drivers at a global scale, and intrinsic individual-level drivers, influence human Hg exposure. Finally, we address how the adverse health effects of Hg in humans and wildlife are modulated by a range of extrinsic and intrinsic drivers within the context of rapid global change. Incorporating components of these three domains into research and monitoring will facilitate a more holistic understanding of how ecological and societal drivers interact to influence Hg health risks.
Collapse
Affiliation(s)
| | - Ellen K. Silbergeld
- Johns Hopkin Bloomberg School of Public Health, 615 N. Wolfe Street, E6644, Baltimore, MD 21205 USA
| | - Niladri Basu
- McGill University, 204-CINE Building, Montreal, QC H9X 3V9 Canada
| | - Paco Bustamante
- University of La Rochelle, laboratory of Littoral Environment and Societies, Littoral Environnement et Sociétés (LIENSs), LIENSs UMR 7266 CNRS-Université de La Rochelle, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Fernando Diaz-Barriga
- Center for Applied Research in Environment and Health at, Universidad Autonoma de San Luis Potosi, Avenida Venustiano Carranza No. 2405, Col Lomas los Filtros Código Postal, 78214 San Luis Potosí, SLP Mexico
| | - William A. Hopkins
- Department of Fish and Wildlife Conservation, 310 West Campus Drive Virginia Tech, Cheatham Hall, Room 106 (MC 0321), Blacksburg, VA 24061 USA
| | - Karen A. Kidd
- Department of Biology & School of Geography and Earth Sciences, McMaster University, 1280 Main Street W., Hamilton, ON L8S 4K1 Canada
| | - Jennifer F. Nyland
- Department of Biological Sciences, 1101 Camden Ave, Salisbury, MD 21801 USA
| |
Collapse
|
47
|
Lazarus M, Sekovanić A, Orct T, Reljić S, Jurasović J, Huber Đ. Sexual Maturity and Life Stage Influences Toxic Metal Accumulation in Croatian Brown Bears. Arch Environ Contam Toxicol 2018; 74:339-348. [PMID: 29230529 DOI: 10.1007/s00244-017-0487-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
The influence of reproductive and (early) life stages on toxic metal levels was investigated in the brown bear (Ursus arctos), the largest mammalian predator species in Croatia. The purpose was to examine critical clusters in a population that might be at a higher risk of adverse health effects caused by metals as environmental contaminants. Levels of cadmium, mercury and lead in muscle, liver and kidney cortex of 325 male and 139 female bears, quantified by inductively coupled plasma mass spectrometry, were analysed according to distinct bear life stages (young: cub, yearling, subadult; mature: adult). Metal levels did not differ among sexes in young animals (< 4 years), except for mercury in muscles (higher in females), and adult females had higher cadmium and mercury. A trend of renal cadmium accumulation with age in immature male animals disappeared once they reached maturity, whereas for females this trend has only slowly declined in mature compared to immature bears. In early life stage (< 1 year), bear cubs had lower cadmium, comparable mercury, and higher lead in the kidneys than the bears of the following age category (yearlings). Due to a higher proportion of renal lead transfer from the mother to the cub compared with cadmium, it may be that the high burden of cadmium found in kidneys of older females has lower toxicological concern for their cubs than the lead content. Sex, reproductive, and life stages of bears were confirmed as important in assessing toxic metal burden.
Collapse
Affiliation(s)
- Maja Lazarus
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P.O. Box 291, 10000, Zagreb, Croatia.
| | - Ankica Sekovanić
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P.O. Box 291, 10000, Zagreb, Croatia
| | - Tatjana Orct
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P.O. Box 291, 10000, Zagreb, Croatia
| | - Slaven Reljić
- Department of Biology, Veterinary Faculty, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia
| | - Jasna Jurasović
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P.O. Box 291, 10000, Zagreb, Croatia
| | - Đuro Huber
- Department of Biology, Veterinary Faculty, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia
| |
Collapse
|
48
|
Martínez-Salcido AI, Ruelas-Inzunza J, Gil-Manrique B, Nateras-Ramírez O, Amezcua F. Mercury Levels in Fish for Human Consumption from the Southeast Gulf of California: Tissue Distribution and Health Risk Assessment. Arch Environ Contam Toxicol 2018; 74:273-283. [PMID: 29299656 DOI: 10.1007/s00244-017-0495-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 12/15/2017] [Indexed: 06/07/2023]
Abstract
We assessed human health risk due to mercury (Hg) concentrations in fish from three coastal lagoons (Urías, Huizache, and Teacapán) in the SE Gulf of California. We also determined Hg distribution in muscle and liver of analyzed ichthyofauna and compared the results among studied areas according to tissue, season, and lagoon system by using multivariate analyses. Levels of Hg in most of the analyzed fish followed the sequence liver > muscle. The highest Hg levels in muscle (2.80 µg g-1 dw) and liver (9.51 µg g-1 dw) were measured in Cynoscion reticulatus and Pomadasys macracanthus, respectively, although according to the multivariate analyses, statistical differences of Hg concentrations were not found according to the season and the tissue but were found according to the system. It seems that the higher concentrations were associated with areas where the hydrological regime is lower. With respect to health risk assessment, the highest hazard quotients were estimated for Cynoscion reticulatus (0.45) and Stellifer furthii (0.29) from Urías and Pomadasys macracanthus (0.35) from Huizache. None of the studied fish represent a risk for consumers in terms of Hg levels in the edible portion.
Collapse
Affiliation(s)
- A I Martínez-Salcido
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de Mexico, Circuito Exterior s/n Ciudad Universitaria, 04510, Mexico, DF, Mexico
| | - J Ruelas-Inzunza
- Technological Institute of Mazatlán, Corsario 1, No. 203, Colonia Urías, 82070, Mazatlán, Sinaloa, Mexico.
| | - B Gil-Manrique
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de Mexico, Circuito Exterior s/n Ciudad Universitaria, 04510, Mexico, DF, Mexico
| | - O Nateras-Ramírez
- Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de Mexico, Circuito Exterior s/n Ciudad Universitaria, 04510, Mexico, DF, Mexico
| | - F Amezcua
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de Mexico, Joel Montes Camarena s/n, 82040, Mazatlán, Sinaloa, Mexico
| |
Collapse
|
49
|
Marrugo-Negrete JL, Ruiz-Guzmán JA, Ruiz-Fernández AC. Biomagnification of Mercury in Fish from Two Gold Mining-Impacted Tropical Marshes in Northern Colombia. Arch Environ Contam Toxicol 2018; 74:121-130. [PMID: 29043389 DOI: 10.1007/s00244-017-0459-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Total mercury concentrations (T-Hg) and stable isotope ratios (δ15N and δ13C) were analyzed in the muscle of fish, collected at two marshes impacted by gold mining in Northern Colombia, to evaluate the seasonal and spatial behavior of these variables and mercury biomagnification based on their relationship with δ15N ratios in the fish. There was not significant (p > 0.05) seasonal differences (dry and rainy season) in δ15N and δ13C values in none marsh, suggesting that these fish species keep a similar feed pattern within each marsh along the year. However, there were significant differences (p < 0.05) between marshes in δ15N, δ13C, and T-Hg, as well as significant seasonal differences (p < 0.05) in T-Hg values for some species, suggesting the possible influence of factors, such as differences in length of food chains between marshes and different degree of anthropogenic impact in relation to human settlements, farmland, livestock (higher in Ayapel marsh), and gold mining activity (higher in La Raya marsh). Correlations analysis showed significant (p < 0.05) relationships between T-Hg concentrations and δ15N values, as well as trophic level, evidencing a T-Hg biomagnification process in the fish food chain from both marshes and consequently a potential health risk for human riverside inhabitants who eat these fish.
Collapse
Affiliation(s)
- José Luis Marrugo-Negrete
- Water, Applied and Environmental Chemistry Group. Laboratory of Toxicology and Environmental Management, University of Córdoba, Cra 6 # 76 - 103, Montería, 230002, Colombia.
| | - Javier Alonso Ruiz-Guzmán
- Water, Applied and Environmental Chemistry Group. Laboratory of Toxicology and Environmental Management, University of Córdoba, Cra 6 # 76 - 103, Montería, 230002, Colombia
| | - Ana Carolina Ruiz-Fernández
- Ana Carolina Ruiz-Fernández. Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Calz. J. Montes Camarena s/n, Col. Playa Sur, 82040, Mazatlán, Mexico
| |
Collapse
|
50
|
Lipka K, Saba M, Falandysz J. Preferential accumulation of inorganic elements in Amanita muscaria from North-eastern Poland. J Environ Sci Health A Tox Hazard Subst Environ Eng 2018; 53:968-974. [PMID: 29746791 DOI: 10.1080/10934529.2018.1470805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Concentrations of Al, Ba, Cd, Ca, Co, Cu, Fe, K, Mg, Mn, Hg, Rb, Ag, Na, Sr and Zn were analysed in fruiting bodies of A. muscaria. This mushroom is considered conditionally edible, since parboiling can detoxify its fruiting bodies from the hallucinogens and render it edible. The specific purpose of the research is the little-known phenomenon of the variability of mineral composition of mushrooms for generations harvested in the same forest areas - both in terms of their nutritional value and anthropogenic influences. Fungal materials were digested in nitric acid and analysed by a validated methods using inductively coupled plasma optical emission spectrometer (ICP-OES) and cold - vapor atomic absorption spectroscopy (CV-AAS). A. muscaria collected in the same area over the period of four years showed fluctuations in the concentrations of the essential elements Co, Cu, Fe, K, Mn, Na and Zn (p < 0.05; U Mann-Whitney test), while only Ca and Mg (p > 0.05) levels were similar. In addition, concentrations of Ag, Al, Ba, Cd, Rb and Sr in fruiting bodies fluctuated, while remained at a similar level for Hg. It is important to note that statistically significant variations in levels of several inorganic elements accumulated in A. muscaria would imply a more careful consideration would be required when assessing the nutritional value of mushroom species.
Collapse
Affiliation(s)
- Krzysztof Lipka
- a Laboratory of Environmental Chemistry & Ecotoxicology , Gdańsk University , Gdańsk , Poland
| | - Martyna Saba
- a Laboratory of Environmental Chemistry & Ecotoxicology , Gdańsk University , Gdańsk , Poland
| | - Jerzy Falandysz
- a Laboratory of Environmental Chemistry & Ecotoxicology , Gdańsk University , Gdańsk , Poland
| |
Collapse
|