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Ni X, Liu Z, Wang J, Dong M, Wang R, Qi Z, Xu H, Jiang C, Zhang Q, Wang J. Optimizing the development of contaminated land in China: Exploring machine-learning to identify risk markers. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133057. [PMID: 38043429 DOI: 10.1016/j.jhazmat.2023.133057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/12/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
Often available for use, previously developed land, which includes residential and commercial/industrial areas, presents a significant challenge due to the risk to human health. China's 2018 release of health risk assessment standards for land reuse aimed to bridge this gap in soil quality standards. Despite this, the absence of representative indicators strains risk managers economically and operationally. We improved China's land redevelopment approach by leveraging a dataset of 297,275 soil samples from 352 contaminated sites, employing machine learning. Our method incorporating soil quality standards from seven countries to discern patterns for establishing a cost-effective evaluative framework. Our research findings demonstrated that detection costs could be curtailed by 60% while maintaining consistency with international soil standards (prediction accuracy = 90-98%). Our findings deepen insights into soil pollution, proposing a more efficient risk assessment system for land redevelopment, addressing the current dearth of expertise in evaluating land development in China.
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Affiliation(s)
- Xiufeng Ni
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zeyuan Liu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jizhong Wang
- Zhejiang Ecological Civilization Academy, Anji 313300, China
| | - Mengting Dong
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ruwei Wang
- School of Environment, Jinan University, Guangzhou 511443, Guangdong, China
| | - Zhulin Qi
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Haolong Xu
- Center of Air Quality Simulation and System Analysis, Chinese Academy of Environmental Planning, Beijing 100012, China
| | - Chao Jiang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qingyu Zhang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Ecological Civilization Academy, Anji 313300, China.
| | - Jinnan Wang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Key Laboratory of Environmental Pollution Control Technology, Hangzhou 310000, China; State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy of Environmental Planning, Beijing 100041, China.
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2
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Nwinyimagu AJ, Eyo JE, Nwonumara GN. Distribution and ecological risk assessment of herbicide residues in water, sediment and fish from Anyim River, Ebonyi State, Nigeria. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 100:104131. [PMID: 37054959 DOI: 10.1016/j.etap.2023.104131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 04/08/2023] [Accepted: 04/11/2023] [Indexed: 06/15/2023]
Abstract
The presence of herbicide residues in water, sediment and African catfish (Clarias gariepinus) from Anyim River was investigated bimonthly from November, 2017 to September 2019. The aim of the study was to evaluate the pollution status of the river and the associated health hazard. The herbicides investigated were glyphosate-based and included sarosate, paraquat, clear weed, delsate and roundup. The samples were collected and analyzed accordingly using gas chromatography/mass spectrometry (GC/MS) based method. The concentration of herbicide residues ranged from 0.02 to 0.77 µg/gdw in sediment, 0.01-0.26 µg/gdw in fish and 0.03-0.43 µg/L in water respectively. Risk Quotient (RQ) deterministic method was used to assess the ecological risk of herbicide residue in fish and the result indicated chances of causing adverse effect on fish species in the river (RQ ≥ 1). Human health risk assessment further indicated potential health implications on humans consuming the contaminated fish on long term basis.
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Affiliation(s)
- Amaechi Joshua Nwinyimagu
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, Nigeria.
| | - Joseph Effiong Eyo
- Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, Nigeria
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García MG, Sánchez JIL, Bravo KAS, Cabal MDC, Pérez-Santín E. Review: Presence, distribution and current pesticides used in Spanish agricultural practices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157291. [PMID: 35835192 DOI: 10.1016/j.scitotenv.2022.157291] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
To guarantee an adequate food supply for the world's growing population, intensive agriculture is necessary to ensure efficient food production. The use of pesticides helps maintain maximum productivity in intensive agriculture by minimizing crop losses due to pests. However, pesticide contamination of surface waters constitutes a major problem as they are resistant to degradation and soluble enough to be transported in water. In recent years, all groups of pesticides defined by the World Health Organization have increased their use and, therefore, their prevalence in the different environmental compartments that can have harmful effects. Despite this effort, there is no rigorous monitoring program that quantifies and controls the toxic effects of each pesticide. However, multiple scientific studies have been published by specialized research groups in which this information is disseminated. Therefore, any attempt to systematize this information is relevant. This review offers a current overview of the presence and distribution of the most widely-used pesticides (insecticides, herbicides, and fungicides) by crop type and an evaluation of the relationships between their uses and environmental implications in Spain. The data demonstrated that there are correlations between the presence of specific pesticides used in the main crops and their presence in the environmental compartments. We have found preliminary data pointing to existing associations between specific pesticides used in the main crops and their presence in environmental compartments within different geographical areas of Spain; this should be the subject of further investigation.
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Affiliation(s)
- Mariano González García
- Escuela Superior de Ingeniería y Tecnología (ESIT), Universidad Internacional de La Rioja, Av. de la Paz, 137, 26004 Logroño, Spain
| | - José Ignacio López Sánchez
- Escuela Superior de Ingeniería y Tecnología (ESIT), Universidad Internacional de La Rioja, Av. de la Paz, 137, 26004 Logroño, Spain
| | - Kharla Andreina Segovia Bravo
- Escuela Superior de Ingeniería y Tecnología (ESIT), Universidad Internacional de La Rioja, Av. de la Paz, 137, 26004 Logroño, Spain
| | - María Dolores Cima Cabal
- Escuela Superior de Ingeniería y Tecnología (ESIT), Universidad Internacional de La Rioja, Av. de la Paz, 137, 26004 Logroño, Spain
| | - Efrén Pérez-Santín
- Escuela Superior de Ingeniería y Tecnología (ESIT), Universidad Internacional de La Rioja, Av. de la Paz, 137, 26004 Logroño, Spain.
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Filimonova V, Nys C, De Schamphelaere KAC, Gonçalves F, Marques JC, Gonçalves AMM, De Troch M. Ecotoxicological and biochemical mixture effects of an herbicide and a metal at the marine primary producer diatom Thalassiosira weissflogii and the primary consumer copepod Acartia tonsa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:22180-22195. [PMID: 29804247 DOI: 10.1007/s11356-018-2302-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
Mixture effects of chemicals and their potential synergistic interactions are of great concern to the public and regulatory authorities worldwide. Intensive agricultural activities are leading to discharges of chemical mixtures to nearby estuarine and marine waters with possible adverse effects on the aquatic communities and for the trophic food web interlinking these communities. Further information about the impacts of these stressors on aquatic organisms is needed. This study addresses ecotoxicological and biochemical effects of single and mixtures of the metal copper and the herbicide Primextra® Gold TZ on the marine diatom Thalassiosira weissflogii and on the estuarine calanoid copepod Acartia tonsa by determining growth rate and survival, respectively, and changes on fatty acid(FA) profiles in both species. Mixture effects on diatom species revealed that copper and Primextra® acted most likely additively with respect to the concentration addition (CA) and independent action (IA) models with model deviation ratios (MDR), 0.752 and 1.063, respectively. For the copepod species, copper and Primextra® were most likely non-interactive with respect to the CA model (MDR = 1.521) but acted most likely synergistically with respect to the IA model (MDR = 2.026). A significant decline in the absolute FA concentration was observed for copepod species after mixture exposure including a considerable decrease of essential FAs that cannot be synthesized de novo by these grazers. We concluded that the mixture effects are more hazardous for primary consumer than for primary producer species in terms of both abundance and biomass quality, suggesting a potential for harmful effects for higher trophic levels and thus a decrease in energy flow through the ecosystem.
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Affiliation(s)
- Valentina Filimonova
- IMAR-CMA and MARE, Faculty of Science and Technology, University of Coimbra, 3004-517, Coimbra, Portugal.
- Department of Biology and CESAM, University of Aveiro, 3810-193, Aveiro, Portugal.
- Faculty of Science, Biology Department, Marine Biology, Ghent University, Krijgslaan 281-S8, 9000, Ghent, Belgium.
| | - Charlotte Nys
- Faculty of Bioscience Engineering, GhenToxLab, Ghent University, Jozef Plateaustraat 22, 9000, Ghent, Belgium
| | - Karel A C De Schamphelaere
- Faculty of Bioscience Engineering, GhenToxLab, Ghent University, Jozef Plateaustraat 22, 9000, Ghent, Belgium
| | - Fernando Gonçalves
- Department of Biology and CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - João C Marques
- IMAR-CMA and MARE, Faculty of Science and Technology, University of Coimbra, 3004-517, Coimbra, Portugal
| | - Ana M M Gonçalves
- IMAR-CMA and MARE, Faculty of Science and Technology, University of Coimbra, 3004-517, Coimbra, Portugal
- Department of Biology and CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Marleen De Troch
- Faculty of Science, Biology Department, Marine Biology, Ghent University, Krijgslaan 281-S8, 9000, Ghent, Belgium
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Tasca AL, Puccini M, Fletcher A. Terbuthylazine and desethylterbuthylazine: Recent occurrence, mobility and removal techniques. CHEMOSPHERE 2018; 202:94-104. [PMID: 29554512 DOI: 10.1016/j.chemosphere.2018.03.091] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The herbicide terbuthylazine (TBA) has displaced atrazine in most of EU countries, becoming one of the most regularly used pesticides and, therefore, frequently detected in natural waters. The affinity of TBA for soil organic matter suggests prolonged contamination; degradation leads to the release of the metabolite desethylterbuthylazine (DET), which has higher water solubility and binds more weakly to organic matter compared to the parent compound, resulting in higher associated risk for contamination of groundwater resources. Additionally, TBA and DET are chemicals of emerging concern because of their persistence and toxicity towards aquatic organisms; moreover, they are known to have significant endocrine disruption capacity to wildlife and humans. Conventional treatments applied during drinking water production do not lead to the complete removal of these chemicals; activated carbon provides the greatest efficiency, whereas ozonation can generate by-products with comparable oestrogenic activity to atrazine. Hydrogen peroxide alone is ineffective to degrade TBA, while UV/H2O2 advanced oxidation and photocatalysis are the most effective processes for oxidation of TBA. It has been determined that direct photolysis gives the highest degradation efficiency of all UV/H2O2 treatments, while most of the photocatalytic degradation is attributed to OH radicals, and TiO2 solar-photocatalytic ozonation can lead to almost complete TBA removal in ∼30 min. Constructed wetlands provide a valuable buffer capacity, protecting downstream surface waters from contaminated runoff. TBA and DET occurrence are summarized and removal techniques are critically evaluated and compared, to provide the reader with a comprehensive guide to state-of-the-art TBA removal and potential future treatments.
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Affiliation(s)
- Andrea Luca Tasca
- Civil and Industrial Engineering Department, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy.
| | - Monica Puccini
- Civil and Industrial Engineering Department, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy
| | - Ashleigh Fletcher
- Department of Chemical and Process Engineering, University of Strathclyde, Glasgow, G1 1XJ, UK
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Destrieux D, Laurent F, Budzinski H, Pedelucq J, Vervier P, Gerino M. Drug residues in urban water: A database for ecotoxicological risk management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:927-941. [PMID: 28783905 DOI: 10.1016/j.scitotenv.2017.07.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/17/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
Human-use drug residues (DR) are only partially eliminated by waste water treatment plants (WWTPs), so that residual amounts can reach natural waters and cause environmental hazards. In order to properly manage these hazards in the aquatic environment, a database is made available that integrates the concentration ranges for DR, which cause adverse effects for aquatic organisms, and the temporal variations of the ecotoxicological risks. To implement this database for the ecotoxicological risk assessment (ERA database), the required information for each DR is the predicted no effect concentrations (PNECs), along with the predicted environmental concentrations (PECs). The risk assessment is based on the ratio between the PNECs and the PECs. Adverse effect data or PNECs have been found in the publicly available literature for 45 substances. These ecotoxicity test data have been extracted from 125 different sources. This ERA database contains 1157 adverse effect data and 287 PNECs. The efficiency of this ERA database was tested with a data set coming from a simultaneous survey of WWTPs and the natural environment. In this data set, 26 DR were searched for in two WWTPs and in the river. On five sampling dates, concentrations measured in the river for 10 DR could pose environmental problems of which 7 were measured only downstream of WWTP outlets. From scientific literature and measurements, data implementation with unit homogenisation in a single database facilitates the actual ecotoxicological risk assessment, and may be useful for further risk coming from data arising from the future field survey. Moreover, the accumulation of a large ecotoxicity data set in a single database should not only improve knowledge of higher risk molecules but also supply an objective tool to help the rapid and efficient evaluation of the risk.
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Affiliation(s)
- Doriane Destrieux
- Acceptables Avenirs, 20 rue Hermés, 31520 Ramonville Saint-Agne, France.
| | - François Laurent
- National Institute of the Agronomic Research (INRA), Toulouse, France
| | - Hélène Budzinski
- Oceanic and Continental Environment and Paleoenvironment Laboratory (EPOC), Bordeaux, France
| | - Julie Pedelucq
- Oceanic and Continental Environment and Paleoenvironment Laboratory (EPOC), Bordeaux, France
| | - Philippe Vervier
- Acceptables Avenirs, 20 rue Hermés, 31520 Ramonville Saint-Agne, France
| | - Magali Gerino
- Functional Ecology and Environment Laboratory (EcoLab), Toulouse, France
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7
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Álvarez PM, Quiñones DH, Terrones I, Rey A, Beltrán FJ. Insights into the removal of terbuthylazine from aqueous solution by several treatment methods. WATER RESEARCH 2016; 98:334-343. [PMID: 27115726 DOI: 10.1016/j.watres.2016.04.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 04/09/2016] [Accepted: 04/13/2016] [Indexed: 06/05/2023]
Abstract
This paper reports the removal of the s-triazine herbicide terbuthylazine (TBA) from aqueous solution by various treatment methods including adsorption onto activated carbon (AC) and multiwalled carbon nanotubes (MWCNT), UV254 photolysis, UV254/H2O2, single ozonation, O3/H2O2, catalytic ozonation (AC, MWCNT and TiO2 as catalysts) and some solar driven processes such as TiO2 photocatalytic oxidation and photo-ozonation. TBA was adsorbed onto AC and MWCNT following a pseudo-second order kinetics and Freundlich isotherm. Rapid small scale column tests showed that TBA could be removed from solution by adsorption onto AC better than atrazine. The UV254/H2O2 treatment resulted in excellent removal of TBA primarily due to the oxidation capability of hydroxyl radicals (kHO = 3.310(9) M(-1) s(-1)) generated from H2O2 photolysis. As the H2O2 initial concentration was increased from 5 to 50 mg L(-1) the HO exposure per UV fluence (RHO,UV) increased, making the process more efficient. Single ozonation also allowed complete removal of the herbicide though the process was slow (kO3=15.4 M(-1) s(-1) at pH > 4). The ozonation process could be greatly accelerated by the enhanced generation of HO through O3/H2O2 and O3/AC processes, which also led to more efficient processes in terms of ozone utilization. Commercial TiO2 (TiO2-P25) and lab prepared anatase TiO2 (TiO2-cat) nanoparticles catalyzed the removal of TBA by solar photocatalysis. In contrast, a lab prepared MWCNT-TiO2 composite was not useful as catalyst in solar photo-oxidation processes because of the HO scavenging nature of the MWCNT used as support. A mechanism for TBA degradation by O3 and HO has been suggested after TBA degradation intermediates identification.
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Affiliation(s)
- Pedro M Álvarez
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Av. de Elvas s/n, 06071 Badajoz, Spain.
| | - Diego H Quiñones
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Av. de Elvas s/n, 06071 Badajoz, Spain
| | - Isidro Terrones
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Av. de Elvas s/n, 06071 Badajoz, Spain
| | - Ana Rey
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Av. de Elvas s/n, 06071 Badajoz, Spain
| | - Fernando J Beltrán
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Av. de Elvas s/n, 06071 Badajoz, Spain
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López-Roldán R, Rubalcaba A, Martin-Alonso J, González S, Martí V, Cortina JL. Assessment of the water chemical quality improvement based on human health risk indexes: Application to a drinking water treatment plant incorporating membrane technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 540:334-343. [PMID: 25911454 DOI: 10.1016/j.scitotenv.2015.04.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/12/2015] [Accepted: 04/13/2015] [Indexed: 06/04/2023]
Abstract
A methodology has been developed in order to evaluate the potential risk of drinking water for the health of the consumers. The methodology used for the assessment considered systemic and carcinogenic effects caused by oral ingestion of water based on the reference data developed by the World Health Organisation (WHO) and the Risk Assessment Information System (RAIS) for chemical contaminants. The exposure includes a hypothetical dose received by drinking this water according to the analysed contaminants. An assessment of the chemical quality improvement of produced water in the Drinking Water Treatment Plant (DWTP) after integration of membrane technologies was performed. Series of concentration values covering up to 261 chemical parameters over 5 years (2008-2012) of raw and treated water in the Sant Joan Despí DWTP, at the lower part of the Llobregat River basin (NE Spain), were used. After the application of the methodology, the resulting global indexes were located below the thresholds except for carcinogenic risk in the output of DWTP, where the index was slightly above the threshold during 2008 and 2009 before the upgrade of the treatment works including membrane technologies was executed. The annual evolution of global indexes showed a reduction in the global values for all situations: HQ systemic index based on RAIS dropped from 0.64 to 0.42 for surface water and from 0.61 to 0.31 for drinking water; the R carcinogenic index based on RAIS was negligible for input water and varied between 4.2×10(-05) and 7.4×10(-06) for drinking water; the W systemic index based on the WHO data varied between 0.41 and 0.16 for surface water and between 0.61 and 0.31 for drinking water. A specific analysis for the indexes associated with trihalomethanes (THMs) showed the same pattern.
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Affiliation(s)
- Ramón López-Roldán
- CETaqua, Carretera d'Esplugues, 75 08940 Cornellà de Llobregat, Barcelona, Spain.
| | - Alicia Rubalcaba
- CTM Technological Centre Foundation, Plaça de la Ciència, No. 2, 08243 Manresa, Spain
| | | | - Susana González
- CETaqua, Carretera d'Esplugues, 75 08940 Cornellà de Llobregat, Barcelona, Spain
| | - Vicenç Martí
- CTM Technological Centre Foundation, Plaça de la Ciència, No. 2, 08243 Manresa, Spain; Aigües de Barcelona, C/Gral. Batet 5-7, E-08028 Barcelona, Spain
| | - Jose Luis Cortina
- CETaqua, Carretera d'Esplugues, 75 08940 Cornellà de Llobregat, Barcelona, Spain; Department of Chemical Engineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028 Barcelona, Spain
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9
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Polonini HC, Brandão HM, Raposo NRB, Brandão MAF, Mouton L, Couté A, Yéprémian C, Sivry Y, Brayner R. Size-dependent ecotoxicity of barium titanate particles: the case of Chlorella vulgaris green algae. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:938-948. [PMID: 25763523 DOI: 10.1007/s10646-015-1436-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/23/2015] [Indexed: 06/04/2023]
Abstract
Studies have been demonstrating that smaller particles can lead to unexpected and diverse ecotoxicological effects when compared to those caused by the bulk material. In this study, the chemical composition, size and shape, state of dispersion, and surface's charge, area and physicochemistry of micro (BT MP) and nano barium titanate (BT NP) were determined. Green algae Chlorella vulgaris grown in Bold's Basal (BB) medium or Seine River water (SRW) was used as biological indicator to assess their aquatic toxicology. Responses such as growth inhibition, cell viability, superoxide dismutase (SOD) activity, adenosine-5-triphosphate (ATP) content and photosynthetic activity were evaluated. Tetragonal BT (~170 nm, 3.24 m(2) g(-1) surface area) and cubic BT (~60 nm, 16.60 m(2) g(-1)) particles were negative, poorly dispersed, and readily aggregated. BT has a statistically significant effect on C. vulgaris growth since the lower concentration tested (1 ppm), what seems to be mediated by induced oxidative stress caused by the particles (increased SOD activity and decreased photosynthetic efficiency and intracellular ATP content). The toxic effects were more pronounced when the algae was grown in SRW. Size does not seem to be an issue influencing the toxicity in BT particles toxicity since micro- and nano-particles produced significant effects on algae growth.
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Affiliation(s)
- Hudson C Polonini
- Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
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10
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Polonini HC, Brandão HM, Raposo NRB, Mouton L, Yéprémian C, Couté A, Brayner R. Ecotoxicological studies of micro- and nanosized barium titanate on aquatic photosynthetic microorganisms. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 154:58-70. [PMID: 24862688 DOI: 10.1016/j.aquatox.2014.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/28/2014] [Accepted: 05/06/2014] [Indexed: 06/03/2023]
Abstract
The interaction between live organisms and micro- or nanosized materials has become a current focus in toxicology. As nanosized barium titanate has gained momentum lately in the medical field, the aims of the present work are: (i) to assess BT toxicity and its mechanisms on the aquatic environment, using two photosynthetic organisms (Anabaena flos-aquae, a colonial cyanobacteria, and Euglena gracilis, a flagellated euglenoid); (ii) to study and correlate the physicochemical properties of BT with its toxic profile; (iii) to compare the BT behavior (and Ba(2+) released ions) and the toxic profile in synthetic (Bold's Basal, BB, or Mineral Medium, MM) and natural culture media (Seine River Water, SRW); and (iv) to address whether size (micro, BT MP, or nano, BT NP) is an issue in BT particles toxicity. Responses such as growth inhibition, cell viability, superoxide dismutase (SOD) activity, adenosine-5-triphosphate (ATP) content and photosynthetic efficiency were evaluated. The main conclusions are: (i) BT have statistically significant toxic effects on E. gracilis growth and viability even in small concentrations (1μgmL(-1)), for both media and since the first 24 h; on the contrary of on A. flos-aquae, to whom the effects were noticeable only for the higher concentrations (after 96 h: ≥75 μg mL(-1) for BT NP and =100 μg mL(-1) for BT MP, in BB; and ≥75 μg mL(-1) for both materials in SRW), in spite of the viability being affected in all concentrations; (ii) the BT behaviors in synthetic and natural culture media were slightly different, being the toxic effects more pronounced when grown in SRW - in this case, a worse physiological state of the organisms in SRW can occur and account for the lower resistance, probably linked to a paucity of nutrients or even a synergistic effect with a contaminant from the river; and (iii) the effects seem to be mediated by induced stress without a direct contact in A. flos-aquae and by direct endocytosis in E. gracilis, but in both organisms the contact with both BT MP and BT NP increased SOD activity and decreased photosynthetic efficiency and intracellular ATP content; and (iv) size does not seem to be an issue in BT particles toxicity since micro- and nano-particles produced significant toxic for the model-organisms.
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Affiliation(s)
- Hudson C Polonini
- Universidade Federal de Juiz de Fora, Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Rua José Lourenço Kelmer, s/n, 36036-900 Juiz de Fora, Brazil.
| | - Humberto M Brandão
- Empresa Brasileira de Pesquisa Agropecuária (Embrapa Gado de Leite), 36038-330 Juiz de Fora, Brazil
| | - Nádia R B Raposo
- Universidade Federal de Juiz de Fora, Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Rua José Lourenço Kelmer, s/n, 36036-900 Juiz de Fora, Brazil
| | - Ludovic Mouton
- Université Paris Diderot, Sorbonne Paris Cité, Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS), UMR 7086, CNRS, 15 rue Jean de Baïf, F-75205 Paris Cedex 13, France
| | - Claude Yéprémian
- Muséum National d'Histoire Naturelle, Département RDDM, USM 505, 57 rue Cuvier, F-75005 Paris, France
| | - Alain Couté
- Muséum National d'Histoire Naturelle, Département RDDM, USM 505, 57 rue Cuvier, F-75005 Paris, France
| | - Roberta Brayner
- Université Paris Diderot, Sorbonne Paris Cité, Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS), UMR 7086, CNRS, 15 rue Jean de Baïf, F-75205 Paris Cedex 13, France.
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