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Garagnon J, Perrette Y, Naffrechoux E, Pons-Branchu E. Polycyclic aromatic hydrocarbon record in an urban secondary carbonate deposit over the last three centuries (Paris, France). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167429. [PMID: 37774882 DOI: 10.1016/j.scitotenv.2023.167429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/01/2023]
Abstract
Preserving water resources and limiting pollution are central environmental issues in the current context of intense anthropization. Among organic pollutants, polycyclic aromatic hydrocarbons (PAHs) are commonly analysed as part of water quality assessments. After being emitted into the atmosphere, these persistent organic pollutants are deposited on the continental surface, where they are transported to the aquatic environment by run-off and infiltration waters. Mainly due to anthropogenic emissions, PAHs can therefore be considered as a proxy for human activities. Urban secondary carbonate deposits (USCDs), similar to cave speleothems, have recently been studied for their potential as natural archives of water quality. However, USCDs have never been used to trace water organic pollution and only a few studies on PAHs in speleothems are available. This study focuses on a well-dated USCD covering the last 300 years from the Great Aqueduct of Belleville (north-east of Paris, France). The aim is to determine the nature and variation of trapped organic compounds over time and to discuss their origin, transport, and link with changes in soil occupation due to human activities. To do so, high-resolution solid-phase UV fluorescence imaging analyses were combined with chemical analyses of PAHs and organic carbon carried out on low-weight samples. The results show that PAHs have been present in urban surface water for 300 years. Over the last few decades, a 7-fold increase is observed, accompanied by a change in the pollution source, enriched in high-molecular-weight PAHs, probably linked to urban dust. This study also reveals modes of transport directly influenced by changes in the soil occupation that are very different from those usually encountered in natural environments. This work thus paves the way for a better long-term understanding of the impact of human activity on the transfer of pollutants to sub-surface waters.
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Affiliation(s)
- Julia Garagnon
- LSCE/IPSL, UMR 8212CEA-CNRS-UVSQ, Université Paris-Saclay, Orme des Merisiers, F-91191 Gif-sur-Yvette, France; EDYTEM (CNRS/USMB/MCC), Bâtiment Pole Montagne, Campus Scientifique, 73376 Le Bourget du Lac Cedex, France.
| | - Yves Perrette
- EDYTEM (CNRS/USMB/MCC), Bâtiment Pole Montagne, Campus Scientifique, 73376 Le Bourget du Lac Cedex, France
| | - Emmanuel Naffrechoux
- EDYTEM (CNRS/USMB/MCC), Bâtiment Pole Montagne, Campus Scientifique, 73376 Le Bourget du Lac Cedex, France
| | - Edwige Pons-Branchu
- LSCE/IPSL, UMR 8212CEA-CNRS-UVSQ, Université Paris-Saclay, Orme des Merisiers, F-91191 Gif-sur-Yvette, France
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Faboya OL, Sojinu SO, Otugboyega JO. Preliminary investigation of polycyclic aromatic hydrocarbons (PAHs) concentration, compositional pattern, and ecological risk in crude oil-impacted soil from Niger delta, Nigeria. Heliyon 2023; 9:e15508. [PMID: 37151689 PMCID: PMC10161696 DOI: 10.1016/j.heliyon.2023.e15508] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023] Open
Abstract
Crude oil contamination could serve as an important source of polycyclic aromatic hydrocarbons (PAHs) in the environment. Determining the concentration and distribution of PAHs and their ecological risk could provide clues for appropriate remediation. The present study investigated the concentrations, composition pattern, and ecological risk of PAHs in crude oil-contaminated soil collected from the Niger Delta, Nigeria. The concentrations of Σ29PAHs and 16 priority US-EPA PAHs (Σ16PAHs) in the soil ranged from 24230.68 to 40845.32 ng/g (average: 29953.47 ng/g) and 7361.66-14141.49 ng/g (average: 9819.96 ng/g), respectively. The concentrations of Σ16PAHs US-EPA in all the studied locations far exceeded the safety value of 1000 ng/g set by the soil quality guidelines of Switzerland and above which is regarded as being highly contaminated for Agricultural soils of Poland. The percentage composition of 2-, 3-,4-, 5-, and 6-ring in the soils were 33.69%, 56.31%, 9.47%, 0.52%, and 0.02% of the total PAHs, respectively, indicating the predominance of low molecular weight PAHs typical of petrogenic origin. Ecological risk assessment indicated a high risk to the soil biota and ecosystem in the studied soil samples as presented by individual PAH and total PAHs. 2-, 3- and 4-ring PAHs in the soil contributed significantly to the ecological risk burden in the soils. This research work provides useful information on the ecological risk associated with crude oil contamination and consequently would assist the government in formulating precise, targeted, and effective remediation measures for soil contaminated with crude oil.
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Affiliation(s)
- Oluwabamise L. Faboya
- Department of Chemistry, Federal University, Oye-Ekiti, Ekiti State, Nigeria
- Corresponding author.
| | - Samuel O. Sojinu
- Department of Chemistry, College of Physical Sciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Joseph O. Otugboyega
- Department of Environmental Management and Toxicology, Federal University, Oye-Ekiti, Ekiti State, Nigeria
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Gondwal TK, Mandal P. Characterization of organic contaminants associated with road dust of Delhi NCR, India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:51906-51919. [PMID: 36820981 DOI: 10.1007/s11356-023-25762-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Hydrophobic organic contaminated polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and CHNS (carbon, hydrogen, nitrogen and sulphur species) are explosively associated with road dust particles. A few organic contaminants are toxic in nature and have an unpleasant effect on human health. The International Agency for Research on Cancer (IARC), the US Department of Health and Human Services (HHS) and the United States-Environmental Protection Agency has considered several PAHs and PCBs as carcinogens for human beings. In the proposed study, the anthropogenic contaminants present in road dust were assessed in six representative diversified sites i.e. industrial, commercial, office, residential, construction and traffic intersection in Delhi NCR, India. Roadside dust samples were gathered in premonsoon, monsoon and postmonsoon seasons and characterized for PAHs, PCBs and CHNS. The concentration of total PAHs (16 Nos) and PCBs (6 Nos) of the selected sites ranged from 0.27 µg/kg to 605.80 µg/kg and 0.01 µg/kg to 41.26 µg/kg, respectively. The Fourier transform infrared spectroscopy-attenuated total reflectance study suggested that the presence of O = C = O, Si-O, carbonyl, acidic or aliphatic esters group were associated with road dust particles. Hydrogen and sulphur concentrations were not detected in the selected road dust samples. Carbon and nitrogen concentrations varied from 2.24% to 16.82% and 0.69% to 14.5%, respectively, seasonally. In the premonsoon season, road dust was distinguishably contaminated as compared to monsoon and postmonsoon season, which might be due to movement of contaminated road dust from adjacent locations. It was perceived that Delhi NCR organic contamination in road dust was much below as compared to other countries. It may be concluded that due to the presence of significant amounts of carbon and nitrogen concentrations in the road dust, to a greater extent, road dust can be fertile and might be advantageous for green belt development to mitigate air pollution. The utilization of road dust will further bring down the burden of landfill sites and may lead towards sustainability.
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Affiliation(s)
- Tarang Kumar Gondwal
- Widmans Laboratory, IMT Manesar, Gurugram, Haryana, 122050, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, 201002, India
- CSIR-NEERI, Zonal Centre, New Delhi, 110 028, India
| | - Papiya Mandal
- CSIR-NEERI, Zonal Centre, New Delhi, 110 028, India.
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Cai H, Yao S, Huang J, Zheng X, Sun J, Tao X, Lu G. Polycyclic Aromatic Hydrocarbons Pollution Characteristics in Agricultural Soils of the Pearl River Delta Region, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16233. [PMID: 36498306 PMCID: PMC9739997 DOI: 10.3390/ijerph192316233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
In order to investigate the pollution status of polycyclic aromatic hydrocarbons (PAHs) in the agricultural soil, 240 agricultural soil topsoil samples were collected from nine Pearl River Delta cities from June to September 2019. In addition, 72 samples were collected for vertical soil profiles, which soil profiles were excavated to a depth of 80 cm. After sample preparation, GC-MS was used for the separation of compounds on a HP-5MS quartz capillary column. ArcGIS software was used to map the spatial distribution. Health risk assessment was conducted using USEPA standard. The results showed that the total concentration of 16 PAHs ranged from 43.4 to 5630 ng/g, with an average of 219 ng/g. The spatial distribution showed that most of the seriously polluted areas were in the coastal area, near the port, and there was point source pollution in the Gaoming of Foshan. Vertically distributed display Zhuhai, Jiangmen, Zhaoqing, Shenzhen and Dongguan increased and then decreased from bottom to bottom, showing a low-high-low pattern, the concentration of PAHs in Zhongshan and Foshan decreased with the soil depth, while the concentration of PAHs in Guangzhou and Huizhou was enriched with human activities. The PAHs components in soil samples were mainly medium and high rings (4−6 rings). The analysis of the origin of PAH in soil samples showed that the mixture of incomplete combustion sources of fossil fuels such as coal and biomass and traffic emission sources were the main sources of soil PAHs. A small amount can be attributed to oil sources such as oil spills. The human health risk assessment showed no cancer risk for children, while for adults, may cause a potential risk of cancer, which needs to be noticed. Spearman correlation analysis showed that PAH content was significantly correlated with SOC (p < 0.01) and pH (p < 0.05). Port transport, road emissions and industrial production make the area a pollution hot topic, and supervision should be strengthened to protect the environment and food safety.
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Affiliation(s)
- Haolong Cai
- Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Siyu Yao
- Department of Environmental Sciences, College of Earth and Environment Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jiahui Huang
- Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Xiongkai Zheng
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jianteng Sun
- Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Xueqin Tao
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Guining Lu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
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Hilber I, Blum F, Schmidt HP, Bucheli TD. Current analytical methods to quantify PAHs in activated carbon and vegetable carbon (E153) are not fit for purpose. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119599. [PMID: 35690223 DOI: 10.1016/j.envpol.2022.119599] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/31/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Pyrogenic carbonaceous materials (PCM) are increasingly used in a wide variety of consumer products, ranging from medicine, personal care products, food and feed additives, as well as drinking water purification. Depending on the product category and corresponding legislation, several terms are commonly used for PCM, such as Carbo activatus, C. medicinalis, vegetable carbon (E153), (activated) charcoal, (activated) biochar, or activated carbon. All PCM contain polycyclic aromatic hydrocarbons (PAHs) co-produced during pyrolysis. However, the actual PAH-content of PCM may range from negligibly low to alarmingly high depending on pyrolysis conditions and, if any, subsequent activation. Because of their health risk, PAHs need to be determined in many such PCM containing products, and concentrations are regulated by respective legally binding documents. Several such documents even specify the analytical method to be used. In this paper, we first argue that based on existing literature, currently legally binding methods to quantify PAHs in such products might not be fit for purpose. Secondly, we exemplarily determined PAH concentrations with a method previously optimized for biochar in a selection of 15 PCM or PCM-containing commercial products, illustrating that concentrations up to 30 mg kg-1 can be found. Consumer safety is of concern according to Swiss norms for drinking water and EU regulations for food additives for some of the investigated samples. In fact, some products would not have been allowed to be put on the market, if regulations with fit for purpose analytical methods existed. As PAHs were detected in considerable concentrations when extracted with toluene for 36 h, the authors suggest a corresponding adaption of existing methods and harmonization of the legislation.
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Affiliation(s)
- Isabel Hilber
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zürich, Switzerland; Ithaka Institute for Carbon Strategies, 1974 Arbaz, Switzerland
| | - Franziska Blum
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zürich, Switzerland
| | | | - Thomas D Bucheli
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zürich, Switzerland.
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Zhou M, Li Q, Wang X, Huang Q, Cang L. Electrokinetic combined peroxymonosulfate (PMS) remediation of PAH contaminated soil under different enhance methods. CHEMOSPHERE 2022; 286:131595. [PMID: 34293572 DOI: 10.1016/j.chemosphere.2021.131595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/06/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Because of the high hydrophobicity, low volatility, and high sorption capacity of PAHs, their remediation in contaminated soil is challenging. Electrokinetic (EK) enhanced chemical remediation is an emerging dual technology employed in this study, using a new oxidant peroxymonosulfate (PMS) to remediate PAHs contaminated soil. Here, PMS migration under electric field and the remediation efficiency for the PAHs polluted soil were assessed. We observed that the PMS removal efficiencies (59.7%-82.8%) were higher than those with persulfate (PS) (53.9%-78.5%), indicating PMS's superior oxidation capacity for PAHs. Although oxidant PMS can decontaminate PAHs in polluted soils, its removal of PAHs was only 11.0% without the enhanced methods. The enhancements increased the removal efficiency for PAHs from 0.33 to 2.10 times. At fixed catholyte pH of 4, the highest removal efficiency (34.1%) was achieved because it enhanced PMS migration from cathode to anode. These findings suggested that PMS was a potential oxidant for EK remediation, and some enhancements must be applied in EK combined PMS remediation PAHs polluted soil.
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Affiliation(s)
- Mingzhu Zhou
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China.
| | - Xia Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Qiao Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Long Cang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Bandowe BAM, Shukurov N, Leimer S, Kersten M, Steinberger Y, Wilcke W. Polycyclic aromatic hydrocarbons (PAHs) in soils of an industrial area in semi-arid Uzbekistan: spatial distribution, relationship with trace metals and risk assessment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:4847-4861. [PMID: 34041653 PMCID: PMC8528758 DOI: 10.1007/s10653-021-00974-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 05/11/2021] [Indexed: 05/04/2023]
Abstract
The concentrations, composition patterns, transport and fate of PAHs in semi-arid and arid soils such as in Central Asia are not well known. Such knowledge is required to manage the risk posed by these toxic chemicals to humans and ecosystems in these regions. To fill this knowledge gap, we determined the concentrations of 21 parent PAHs, 4,5-methylenephenanthrene, 6 alkylated PAHs, and biphenyl in soils from 11 sampling locations (0-10, 10-20 cm soil depths) along a 20-km transect downwind from the Almalyk metal mining and metallurgical industrial complex (Almalyk MMC), Uzbekistan. The concentrations of Σ29 PAHs and Σ16 US-EPA PAHs were 41-2670 ng g-1 and 29-1940 ng g-1, respectively. The highest concentration of Σ29 PAHs occurred in the immediate vicinity of the copper smelting factory of the Almalyk MMC. The concentrations in topsoil decreased substantially to a value of ≤ 200 ng g-1 (considered as background concentration) at ≥ 2 km away from the factory. Low molecular weight PAHs dominated the PAH mixtures at less contaminated sites and high molecular weight PAHs at the most contaminated site. The concentration of Σ16 US-EPA PAHs did not exceed the precautionary values set by the soil quality guidelines of, e.g., Switzerland and Germany. Similarly, the benzo[a]pyrene equivalent concentration in soils near the Almalyk MMC did not exceed the value set by the Canadian guidelines for the protection of humans from carcinogenic PAHs in soils. Consequently, the cancer risk due to exposure to PAHs in these soils can be considered as low.
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Affiliation(s)
- Benjamin A Musa Bandowe
- Multiphase Chemistry Department, Max-Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128, Mainz, Germany.
| | - Nosir Shukurov
- Institute of Geology and Geophysics, State Committee of the Republic of Uzbekistan for Geology and Mineral Resources, Olimlar street 64, Tashkent, Uzbekistan, 100041
- Geosciences Institute, Johannes Gutenberg-University, 55099, Mainz, Germany
| | - Sophia Leimer
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131, Karlsruhe, Germany
| | - Michael Kersten
- Geosciences Institute, Johannes Gutenberg-University, 55099, Mainz, Germany
| | - Yosef Steinberger
- The Mina and Everard Goodman, Faculty of Life Sciences, Bar-Ilan University, 52900, Ramat-Gan, Israel
| | - Wolfgang Wilcke
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131, Karlsruhe, Germany
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Wilcke W, Bigalke M, Wei C, Han Y, Musa Bandowe BA. Global distribution of oxygenated polycyclic aromatic hydrocarbons in mineral topsoils. JOURNAL OF ENVIRONMENTAL QUALITY 2021; 50:717-729. [PMID: 33825209 DOI: 10.1002/jeq2.20224] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Hazardous oxygenated polycyclic aromatic hydrocarbons (OPAHs) originate from combustion (primary sources) or postemission conversion of polycyclic aromatic hydrocarbons (PAHs) (secondary sources). We evaluated the global distribution of up to 15 OPAHs in 195 mineral topsoils from 33 study sites (covering 52° N-47° S, 71° W-118 °E) to identify indications of primary or secondary sources of OPAHs. The sums of the (frequently measured 7 and 15) OPAH concentrations correlated with those of the Σ16EPA-PAHs. The relationship of the Σ16EPA-PAH concentrations with the Σ7OPAH/Σ16EPA-PAH concentration ratios (a measure of the variable OPAH sources) could be described by a power function with a negative exponent <1, leveling off at a Σ16EPA-PAH concentration of approximately 400 ng g-1 . We suggest that below this value, secondary sources contributed more to the OPAH burden in soil than above this value, where primary sources dominated the OPAH mixture. This was supported by a negative correlation of the Σ16EPA-PAH concentrations with the contribution of the more readily biologically produced highly polar OPAHs (log octanol-water partition coefficient <3) to the Σ7OPAH concentrations. We identified mean annual precipitation (Spearman ρ = .33, p < .001, n = 143) and clay concentrations (ρ = .55, p < .001, n = 33) as important drivers of the Σ7OPAH/Σ16EPA-PAH concentration ratios. Our results indicate that at low PAH contamination levels, secondary sources contribute considerably and to a variable extent to total OPAH concentrations, whereas at Σ16EPA-PAH contamination levels >400 ng g-1 , there was a nearly constant Σ7OPAH/Σ16EPA-PAH ratio (0.08 ± 0.005 [SE], n = 80) determined by their combustion sources.
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Affiliation(s)
- Wolfgang Wilcke
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology, Reinhard-Baumeister-Platz 1, 76131, Karlsruhe, Germany
| | - Moritz Bigalke
- Institute of Geography, Univ. of Bern, Hallerstrasse 12, 3012, Bern, Switzerland
| | - Chong Wei
- Shanghai Carbon Data Research Center, Key Lab. of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
- State Key Lab. of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Yongming Han
- State Key Lab. of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong Univ., Xi'an, 710049, China
| | - Benjamin A Musa Bandowe
- Dep. of Multiphase Chemistry, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128, Mainz, Germany
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Shi R, Li X, Yang Y, Fan Y, Zhao Z. Contamination and human health risks of polycyclic aromatic hydrocarbons in surface soils from Tianjin coastal new region, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115938. [PMID: 33158616 DOI: 10.1016/j.envpol.2020.115938] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/09/2020] [Accepted: 10/24/2020] [Indexed: 06/11/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in urban soils are of increasing concern because of their potential toxicity and persistence. However, there is limited information about PAHs in Tianjin coastal new region, although it is an important economic and industrial center in Northern China. Here we determined the concentrations of PAHs in 210 surface soil samples collected from this region according to administrative divisions covering Han'gu district, Tanggu district, and Dagang district, to evaluate their contamination and potential cancer risks. The concentrations of 16 PAHs ranged from 58.2 to 9160 ng g-1, and the highest concentration was found in Han'gu district. According to the incremental lifetime cancer risk (ILCR) model, the soils from Han'gu district and Dagang district posed a moderate carcinogenic risk to residents, and dermal contact was the main exposure pathway. Besides, ILCRs for children through ingestion were comparable to those for adults but apparently higher than adolescents, while ILCRs of dermal contact for adults were higher than children and adolescents. Comparisons between the layout of industrial zones and the distributions of PAHs as well as ILCRs indicate that PAHs accumulating in soils and then incurring risk areas is partly controlled by the economic and industrial structure.
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Affiliation(s)
- Rongguang Shi
- Agro-environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Xiaohua Li
- Rural Energy & Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing, 100125, China
| | - Yanying Yang
- Agro-environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Ying Fan
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang, 330013, China.
| | - Zongshan Zhao
- Environmental Science and Engineering College, Qingdao University, Qingdao, 266071, China
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Hilber I, Arrigo Y, Zuber M, Bucheli TD. Desorption Resistance of Polycyclic Aromatic Hydrocarbons in Biochars Incubated in Cow Ruminal Liquid in Vitro and in Vivo. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:13695-13703. [PMID: 31682112 DOI: 10.1021/acs.est.9b04340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Biochar is a new, promising, and sustainable feed additive alternative in agricultural production, which may, however, contain a considerable amount of polycyclic aromatic hydrocarbons (PAHs). As a measure of their bioaccessibility to ruminants, we quantified PAH concentrations in biochars before and after three different incubation experiments. Specifically, the biochars were subjected to (1) an aqueous cyclodextrin suspension with a contaminant trap as (infinite) sink, (2) an in vitro experiment with cow ruminal liquid and a contaminant trap, and (3) an in vivo experiment within cow rumen. Three different biochars were used that contained 13-407 mg/kgdw of the sum of 16 U.S. EPA PAHs before the exposure. While experiment (1) resulted in no or minimal bioaccessibility (desorption resistance) of the PAHs expressed by their largely unaltered concentrations, experiments (2) and (3) caused concentration reductions on average by 35 and 56%, respectively, presumably mainly due to the presence of the ruminal fluid in (2) and (3), and the extended sorption capacity in (3). Thus, simple and "abiotic" passive sampling methods may not capture all processes contributing to bioaccessibility in complex biological systems. A comparison with average daily PAH intake of ruminants suggests that quality-controlled biochar containing <10 mg/kgdw PAHs will not pose an increased risk when applied as a feed additive.
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Affiliation(s)
- Isabel Hilber
- Agroscope, Research Group Environmental Analytics , 8046 Zurich , Switzerland
| | - Yves Arrigo
- Agroscope, Research Group Ruminants , 1725 Posieux , Switzerland
| | - Martin Zuber
- Agroscope, Research Group Environmental Analytics , 8046 Zurich , Switzerland
| | - Thomas D Bucheli
- Agroscope, Research Group Environmental Analytics , 8046 Zurich , Switzerland
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Zhang Y, Peng C, Guo Z, Xiao X, Xiao R. Polycyclic aromatic hydrocarbons in urban soils of China: Distribution, influencing factors, health risk and regression prediction. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:112930. [PMID: 31374490 DOI: 10.1016/j.envpol.2019.07.098] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/16/2019] [Accepted: 07/18/2019] [Indexed: 05/27/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in urban soils are a risk to the health of residents. To predict those risks, the distribution and the factors influencing the concentration of PAHs were studied by collecting 1120 records of soil PAHs published during 2006-2017 from 26 cities. The mean concentrations of 16 PAHs (∑PAHs) in soil varied from 123 μg/kg to 5568 μg/kg, with a mean value of 1083 μg/kg, suggesting that a few cities were polluted. The distribution of ∑PAHs in the cities followed two gradients, namely from northern China through eastern China to southern China and from industrial cities through developed cities to cities that are main tourist attractions. The concentrations were significantly correlated to annual temperature, the efficiency of energy use, and to such measures of air quality as PM10 and NO2 concentrations. A regression equation developed to predict the concentration of ∑PAHs in soil and the corresponding health risks to residents of 35 major Chinese cities of China showed that the risks to adults and children were slight in most cities but those in a few industrial cities were of concern, and field investigations are recommended to assess the risk in greater detail. The method offers a useful tool for predicting such risks in other cities even when data on soils PAHs are not available.
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Affiliation(s)
- Yan Zhang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China.
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China
| | - Ruiyang Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, People's Republic of China
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Zhang Y, Virjamo V, Sobuj N, Du W, Yin Y, Nybakken L, Guo H, Julkunen-Tiitto R. Elevated temperature and CO 2 affect responses of European aspen (Populus tremula) to soil pyrene contamination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 634:150-157. [PMID: 29627537 DOI: 10.1016/j.scitotenv.2018.03.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 03/28/2018] [Accepted: 03/28/2018] [Indexed: 06/08/2023]
Abstract
High northern latitudes are climatic sensitive areas, and are also regions to which polycyclic aromatic hydrocarbons (PAHs) easily transport and accumulate with potential risk to natural ecosystems. However, the effect of PAHs on northern woody plant growth and defense under climate change is very little studied. Here, we conducted a unique experiment in greenhouses to investigate sex-related responses of the dioecious Populus tremula to pyrene (50mgkg-1) and residue of pyrene in soils under ambient and elevated temperature (+1.8°C on average) and CO2 (740ppm). Pyrene decreased stem biomass and leaf area by 9% and 6%, respectively under ambient conditions, and the reduction of leaf area was more severe under elevated temperature (38%), elevated CO2 (37%), and combined T+CO2 (42%). Other growth parameters were unchanged by pyrene. Pyrene did not affect the concentration of leaf total phenolics under ambient conditions, but increased it by 16%, 1%, and 20% compared to controls under elevated temperature, elevated CO2, and T+CO2, respectively. Pyrene had only minor sex-specific effects on plant growth and phenolics. The concentration of residual pyrene in pyrene-spiked soils was higher under elevated CO2 than under ambient, elevated temperature, and combined T+CO2. The results suggest that both sexes of P. tremula have the capacity to regulate growth and metabolism to adjust to the stress of the tested pyrene contamination under elevated temperature and CO2, but potential risk of pyrene to plants still exists in the future changing climate.
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Affiliation(s)
- Yaodan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China; Department of Environmental and Biological Sciences, University of Eastern Finland, 80101 Joensuu, Finland
| | - Virpi Virjamo
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101 Joensuu, Finland
| | - Norul Sobuj
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101 Joensuu, Finland
| | - Wenchao Du
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Line Nybakken
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1432 Ås, Norway
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China.
| | - Riitta Julkunen-Tiitto
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101 Joensuu, Finland
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Bartolomé N, Hilber I, Sosa D, Schulin R, Mayer P, Bucheli TD. Applying no-depletion equilibrium sampling and full-depletion bioaccessibility extraction to 35 historically polycyclic aromatic hydrocarbon contaminated soils. CHEMOSPHERE 2018; 199:409-416. [PMID: 29453067 DOI: 10.1016/j.chemosphere.2018.01.159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/25/2018] [Accepted: 01/28/2018] [Indexed: 06/08/2023]
Abstract
Assessing the bioaccessibility of organic pollutants in contaminated soils is considered a complement to measurements of total concentrations in risk assessment and legislation. Consequently, methods for its quantification require validation with historically contaminated soils. In this study, 35 such soils were obtained from various locations in Switzerland and Cuba. They were exposed to different pollution sources (e.g., pyrogenic and petrogenic) at various distance (i.e., urban to rural) and were subject to different land use (e.g., urban gardening and forest). Passive equilibrium sampling with polyoxymethylene was used to determine freely dissolved concentrations (Cfree) of polycyclic aromatic hydrocarbons (PAHs), while sorptive bioaccessibility extraction (SBE) with silicone rods was used to determine the bioaccessible PAH concentrations (Cbioacc) of these soils. The organic carbon partition coefficients of the soils were highest for skeet soils, followed by traffic, urban garden and rural soils. Lowest values were obtained from soil exposed to petrogenic sources. Applicability of SBE to quantify Cbioacc was restricted by silicone rod sorption capacity, as expressed quantitatively by the Sorption Capacity Ratio (SCR); particularly for soils with very high KD. The source of contamination determined bioaccessible fractions (fbioacc). The smallest fbioacc were obtained with skeet soils (15%), followed by the pyrogenically influenced soils, rural soils, and finally, the petrogenically contaminated soil (71%). In conclusion, we present the potential and limitations of the SBE method to quantify bioaccessibility in real soils. These results can be used for additional development of this and similar bioaccessibility methods to guarantee sufficient sorption capacity to obtain reliable results.
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Affiliation(s)
- Nora Bartolomé
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046, Zurich, Switzerland; Department of Environmental System Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
| | - Isabel Hilber
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Dayana Sosa
- Centro Nacional de Sanidad Agropecuaria (CENSA), Apartado 10, CP 32700, San José de las Lajas, Mayabeque, Cuba
| | - Rainer Schulin
- Department of Environmental System Science, ETH Zurich, Universitätstrasse 16, 8092 Zurich, Switzerland
| | - Philipp Mayer
- Technical University of Denmark, 2800 Kongens, Lyngby, Denmark
| | - Thomas D Bucheli
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046, Zurich, Switzerland.
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Zhang Y, Virjamo V, Du W, Yin Y, Nissinen K, Nybakken L, Guo H, Julkunen-Tiitto R. Effects of soil pyrene contamination on growth and phenolics in Norway spruce (Picea abies) are modified by elevated temperature and CO 2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:12788-12799. [PMID: 29473139 DOI: 10.1007/s11356-018-1564-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 02/13/2018] [Indexed: 05/06/2023]
Abstract
With the constant accumulation of polycyclic aromatic hydrocarbons (PAHs) in soil and increasing temperature and CO2 levels, plants will inevitably be exposed to combined stress. Studies on the effects of such combined stresses are needed to develop mitigation and adaptation measures. Here, we investigated the effects of soil pyrene contamination (50 mg kg-1) on growth and phenolics of 1-year-old Norway spruce seedlings from five different origins in Finland at elevated temperature (+ 2 °C) and CO2 (+ 360 ppm). Pyrene significantly decreased spruce height growth (0-48%), needle biomass (0-44%), stem biomass (0-43%), and total phenolic concentrations in needles (2-13%) and stems (1-19%) compared to control plants. Elevated temperature alone did not affect growth but led to lower concentrations of total phenolics in needles (5-29%) and stems (5-18%) in both soil treatments. By contrast, elevated CO2 led to higher needle biomass (0-39%) in pyrene-spiked soils and higher concentrations of stem phenolics (0-18%) in pyrene-spiked and control soils compared to ambient treatments. The decrease in height growth and phenolic concentrations caused by pyrene was greater at elevated temperature, while elevated CO2 only marginally modified the response. Seedlings from different origins showed different responses to the combined environmental stressors. The changes in growth and in the quantity and quality of phenolics in this study suggest that future climate changes will aggravate the negative influence of soil pyrene pollution on northern conifer forest ecosystems.
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Affiliation(s)
- Yaodan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101, Joensuu, Finland
| | - Virpi Virjamo
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101, Joensuu, Finland
| | - Wenchao Du
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Katri Nissinen
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101, Joensuu, Finland
| | - Line Nybakken
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101, Joensuu, Finland
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1432, Ås, Norway
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Riitta Julkunen-Tiitto
- Department of Environmental and Biological Sciences, University of Eastern Finland, 80101, Joensuu, Finland
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Paris A, Ledauphin J, Poinot P, Gaillard JL. Polycyclic aromatic hydrocarbons in fruits and vegetables: Origin, analysis, and occurrence. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:96-106. [PMID: 29172043 DOI: 10.1016/j.envpol.2017.11.028] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 11/06/2017] [Accepted: 11/07/2017] [Indexed: 05/06/2023]
Abstract
Feed intake, for non-smokers, is the first route of contamination to polycyclic aromatic hydrocarbons (PAHs), which are potentially toxic compounds via ingestion. Investigations are focused on the presence of PAHs in fruits and vegetables. Transfer of PAHs can occur from air and soil during cultivation. They can also appear prior to consumption during storage, transport or cooking processes. Rather low amounts of PAHs are usually detected in raw fruits and vegetables. Quantities are between 0.01 and 0.5 μg kg-1 (wet weight) for compounds classified as priority pollutants by the US Environmental Protection Agency (EPA). However, several studies point out that concentrations of some PAHs can exceed 0.5 μg kg-1 wet weight in diverse fruits and vegetables and even reach 5 μg kg-1. Amounts can be very different depending on the surrounding area of the crops, the aromatic hydrocarbon, or even the product itself. PAHs content is usually higher for products grown near roadways or in urban regions than in rural areas. Trace level of compounds such as phenanthrene, fluoranthene and pyrene have been found in quite every raw fruit and vegetable. Relative high amounts of lighter PAHs such as naphthalene, acenaphthylene, and acenaphthene have been found in some of them.
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Affiliation(s)
- Alice Paris
- Normandie Univ, UNICAEN, Unité de Recherche Aliments Bioprocédés Toxicologie Environnements (UR ABTE, EA 4651), 14000 Caen, France
| | - Jérôme Ledauphin
- Normandie Univ, UNICAEN, Unité de Recherche Aliments Bioprocédés Toxicologie Environnements (UR ABTE, EA 4651), 14000 Caen, France
| | - Pauline Poinot
- Université de Poitiers, UMR-CNRS 7285, Institut de Chimie des Milieux et des Matériaux de Poitiers, Equipe Eau, Géochimie Organique, Santé (EGS), 4 rue Michel Brunet, TSA 51106, 86073 Poitiers, France
| | - Jean-Luc Gaillard
- Normandie Univ, UNICAEN, Unité de Recherche Aliments Bioprocédés Toxicologie Environnements (UR ABTE, EA 4651), 14000 Caen, France.
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Azah E, Kim H, Townsend T. Assessment of direct exposure and leaching risk from PAHs in roadway and stormwater system residuals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:58-67. [PMID: 28734250 DOI: 10.1016/j.scitotenv.2017.07.136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 07/12/2017] [Accepted: 07/15/2017] [Indexed: 06/07/2023]
Abstract
Wastes generated from municipal cleaning activities such as street sweeping, ditch cleaning, stormwater pond maintenance, and catch basin sediment removal require appropriate management. Beneficial use of these types of waste is a good alternative to landfilling; however, there are genuine concerns about possible soil and groundwater contamination by pollutants such as polycyclic aromatic hydrocarbons (PAHs). This study assessed the potential risks associated with beneficial use of roadway and stormwater system residuals collected from 14 cities across the state of Florida, USA. Total and leachable concentrations of 16 priority PAHs in the residual samples were measured and compared to appropriate risk-based regulatory threshold values. The bioaccessibility of the PAHs found in the waste streams was also determined using in vitro gastrointestinal leaching test. Of the PAHs studied, benzo [a] pyrene measured concentrations were above appropriate risk-based regulatory threshold values for soil and groundwater, while all other detected PAHs measured concentrations were below. Benzo [a] pyrene concentration (mg/kg) in street sweepings was 1.2 times higher than residential threshold values and 6 times lower than industrial threshold values. The in vitro study found PAH bioaccessibility to range from 1.7% to 49% in six roadway and stormwater system residual samples.
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Affiliation(s)
- Edmund Azah
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL 32611, USA
| | - Hwidong Kim
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL 32611, USA; Department of Environmental Science and Engineering, Gannon University, 109 University Square, Erie, PA 16541, USA
| | - Timothy Townsend
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL 32611, USA.
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17
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Deschutter Y, Everaert G, De Schamphelaere K, De Troch M. Relative contribution of multiple stressors on copepod density and diversity dynamics in the Belgian part of the North Sea. MARINE POLLUTION BULLETIN 2017; 125:350-359. [PMID: 28958440 DOI: 10.1016/j.marpolbul.2017.09.038] [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: 06/13/2017] [Revised: 09/13/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
The effect of multiple stressors on marine ecosystems is poorly understood. To partially bridge this knowledge gap we investigated the relative contribution of environmental variables to density and diversity dynamics of the zooplankton community in the Belgian part of the North Sea. We applied multimodel inference on generalized additive models to quantify the relative contribution of chlorophyll a, temperature, nutrients, salinity and anthropogenic chemicals (i.e. polychlorinated biphenyls and polycyclic aromatic hydrocarbons) to the dynamics of calanoid copepod species in the Belgian part of the North Sea. Temperature was the only predictor consistently showing a high importance in all models predicting the abundances of the selected copepod species. The relative contribution of other predictors was species-dependent. Anthropogenic chemicals were important predictors for three out of six species indicating that chemical mixtures at low concentrations should not be left unattended when performing risk assessments in a natural environment.
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Affiliation(s)
- Yana Deschutter
- Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, Coupure Links 653, B-9000 Ghent, Belgium; Ghent University, Marine Biology, Krijgslaan 281 - S8, 9000 Ghent, Belgium.
| | - Gert Everaert
- Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, Coupure Links 653, B-9000 Ghent, Belgium; Flanders Marine Institute (VLIZ), Wandelaarkaai 7, B-8400 Ostend, Belgium
| | - Karel De Schamphelaere
- Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, Coupure Links 653, B-9000 Ghent, Belgium
| | - Marleen De Troch
- Ghent University, Marine Biology, Krijgslaan 281 - S8, 9000 Ghent, Belgium
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18
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Bogdal C, Züst S, Schmid P, Gyalpo T, Zeberli A, Hungerbühler K, Zennegg M. Dynamic Transgenerational Fate of Polychlorinated Biphenyls and Dioxins/Furans in Lactating Cows and Their Offspring. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10536-10545. [PMID: 28876910 DOI: 10.1021/acs.est.7b02968] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report on two farms in Switzerland heavily contaminated by polychlorinated biphenyls (PCBs) and dioxins (PCDD/Fs), occurring in the first case from diffuse sources and in the second case from PCB-containing wall paint. Extensive measurements of PCBs and PCDD/Fs on site (soil, forage, and paint) and in cattle (blood, fat, and milk) allowed validation of our novel dynamic toxicokinetic model, which includes the transfer of contaminants from the mother cows to their suckling calf and the uptake of soil by grazing cattle. We show that for calves, the mother milk is the main uptake route of contaminants. For both cows and calves, ingestion of contaminated soil, although often overlooked, is an appreciable uptake path. The remediation of the contaminated stable lead to a 2-3 fold reduction of the PCB levels in animals within one year. The transfer of animals to an uncontaminated mountain site during summer proved to be an effective decontamination procedure with up to 50% reduction of the levels within three months. Our study calls for a rapid removal of PCB-containing materials in animal husbandry farms and shows that the diffuse contamination of soils will remain a source for PCBs and PCDD/Fs in our food chain for decades to come.
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Affiliation(s)
- Christian Bogdal
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland
| | - Selina Züst
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland
| | - Peter Schmid
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Tenzing Gyalpo
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland
| | - Anicia Zeberli
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland
| | - Konrad Hungerbühler
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zürich, Switzerland
| | - Markus Zennegg
- Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
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Hilber I, Mayer P, Gouliarmou V, Hale SE, Cornelissen G, Schmidt HP, Bucheli TD. Bioavailability and bioaccessibility of polycyclic aromatic hydrocarbons from (post-pyrolytically treated) biochars. CHEMOSPHERE 2017; 174:700-707. [PMID: 28199946 DOI: 10.1016/j.chemosphere.2017.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/23/2017] [Accepted: 02/03/2017] [Indexed: 05/27/2023]
Abstract
Bioaccessibility data of PAHs from biochar produced under real world conditions is scarce and the influence of feedstock and various post-pyrolysis treatments common in agriculture, such as co-composting or lacto-fermentation to produce silage fodder, on their bioavailability and bioaccessibility has hardly been studied. The total (Ctotal), and freely dissolved (i.e., bioavailable) concentrations (Cfree) of the sum of 16 US EPA PAHs of 43 biochar samples produced and treated in such ways ranged from 0.4 to almost 2000 mg/kg, and from 12 to 81 ng/L, respectively, which resulted in very high biochar-water partition coefficients (4.2 ≤ log KD ≤ 8.8 L/kg) for individual PAHs. Thirty three samples were incubated in contaminant traps that combined a diffusive carrier and a sorptive sink. Incubations yielded samples only containing desorption-resistant PAHs (Cres). The desorption resistant PAH fraction was dominant, since only eight out of 33 biochar samples showed statistically significant bioaccessible fractions (fbioaccessible = 1 - Cres/Ctotal). Bioavailability correlated positively with Ctotal/surface area. Other relationships of bioavailability and -accessibility with the investigated post-pyrolysis processes or elemental composition could not be found. PAH exposure was very limited (low Cfree, high Cres) for all samples with low to moderate Ctotal, whereas higher exposure was determined in some biochars with Ctotal > 10 mg/kg.
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Affiliation(s)
- Isabel Hilber
- Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Philipp Mayer
- Department of Environmental Engineering, DTU Environment, Technical University of Denmark, Bygningstorvet B115, 2800, Kgs. Lyngby, Denmark
| | - Varvara Gouliarmou
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark
| | - Sarah E Hale
- Department of Environmental Engineering, Norwegian Geotechnical Institute NGI, P.O. Box 3930 Ullevål Stadion, 0806, Oslo, Norway
| | - Gerard Cornelissen
- Department of Environmental Engineering, Norwegian Geotechnical Institute NGI, P.O. Box 3930 Ullevål Stadion, 0806, Oslo, Norway; Department of Environmental Sciences (IMV), Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432, Ås, Norway; Department of Applied Environmental Sciences (ITM), Stockholm University, 10691, Sweden
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20
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Jiao H, Bian G, Chen X, Wang S, Zhuang X, Bai Z. Distribution, sources, and potential risk of polycyclic aromatic hydrocarbons in soils from an industrial district in Shanxi, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12243-12260. [PMID: 28357788 DOI: 10.1007/s11356-017-8553-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 02/02/2017] [Indexed: 06/06/2023]
Abstract
Concentration, composition profile, orientation distribution, sources, and potential risks of 16 polycyclic aromatic hydrocarbons (PAHs) were analyzed in 76 surface (0-25 cm) soil samples collected from the Changzhi industrial district in July 2014 using a gas chromatography mass spectrometer (GC-MS QP2010 Ultra) system. The composition patterns of the PAHs were dominated by the presence of four-ring PAHs (average 42.9%), followed by three-ring (average 25.9%), five-ring PAHs (average 25.6%), two-ring PAHs (average 5.03%), and lastly, six-ring PAHs (average 0.641%). Source apportionment of the soil PAHs was also performed by the diagnostic ratios, principal component analysis (PCA), and coefficient of divergence (CD) analysis indicated signatures of PAHs sources (including incineration, coal/wood combustion, and vehicular exhaust emission). The total concentration of 16 PAHs (∑16PAHs) found in the roadsides soils (RS) ranged from 2197 to 25,041 μg kg-1, with an arithmetic mean value of 12,245 μg kg-1; followed by the village soils (VS), which ranged from 2059 to 21,240 μg kg-1, with a mean of 8976 μg kg-1; and lastly, the agricultural soils (AS), which ranged from 794 to 16,858 μg kg-1, with a mean of 3456 μg kg-1. According to the numerical effect-based soils quality guidelines of Maliszewska-Kordybach, the levels of PAHs in the sampled industrial areas range from high to heavy contamination. The values of total benzo[a]pyrene toxicity equivalent values (∑Bapeq16PAHs) in the sample areas ranged from 0.087 to 3611 μg kg-1 with an average of 969 μg kg-1. According to the soil quality guidelines of Canada, values found in the highest range (100 μg kg-1), which are equal to those of ∑Bapeq16PAHs found in the industrial area samples, will exert adverse biological effects. The results of this research could potentially be useful for local governments to control toxicity exposure, promote actions to alleviate PAHs contamination, and to manage human health at both work and industrial areas.
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Affiliation(s)
- Haihua Jiao
- Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Gaopeng Bian
- Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China
| | - Xi Chen
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Suiliang Wang
- Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China
| | - Xuliang Zhuang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhihui Bai
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China.
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21
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Sosa D, Hilber I, Faure R, Bartolomé N, Fonseca O, Keller A, Schwab P, Escobar A, Bucheli TD. Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in soils of Mayabeque, Cuba. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12860-12870. [PMID: 28364208 DOI: 10.1007/s11356-017-8810-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/13/2017] [Indexed: 05/21/2023]
Abstract
Cuba is a country in transition with a considerable potential for economic growth. Soils are recipients and integrators of chemical pollution, a frequent negative side effect of increasing industrial activities. Therefore, we established a soil monitoring network to monitor polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in soils of Mayabeque, a Cuban province southeast of Havana. Concentrations of the sum of the 16 US EPA PAHs and of the seven IRMM PCBs in soils from 39 locations ranged from 20 to 106 μg kg-1 and from 1.1 to 7.6 μg kg-1, respectively. While such concentrations can be considered as low overall, they were in several cases correlated with the distance of sampling sites to presumed major emission sources, with some of the concomitantly investigated source diagnostic PAH ratios, and with black carbon content. The presented data adds to the limited information on soil pollution in the Caribbean region and serves as a reference time point before the onset of a possible further industrial development in Cuba. It also forms the basis to set up and adapt national environmental standards.
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Affiliation(s)
- Dayana Sosa
- Centro Nacional de Sanidad Agropecuaria (CENSA), Apartado 10, CP 32700, San José de las Lajas, Mayabeque, Cuba
| | - Isabel Hilber
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Roberto Faure
- Centro Nacional de Sanidad Agropecuaria (CENSA), Apartado 10, CP 32700, San José de las Lajas, Mayabeque, Cuba
| | - Nora Bartolomé
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
- Department of Environmental System Science, ETH Zurich, 8093, Zurich, Switzerland
| | - Osvaldo Fonseca
- Centro Nacional de Sanidad Agropecuaria (CENSA), Apartado 10, CP 32700, San José de las Lajas, Mayabeque, Cuba
| | - Armin Keller
- Swiss National Soil Monitoring Network, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Peter Schwab
- Swiss National Soil Monitoring Network, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland
| | - Arturo Escobar
- Centro Nacional de Sanidad Agropecuaria (CENSA), Apartado 10, CP 32700, San José de las Lajas, Mayabeque, Cuba.
| | - Thomas D Bucheli
- Environmental Analytics, Agroscope, Reckenholzstrasse 191, 8046, Zurich, Switzerland.
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Bandowe BAM, Meusel H. Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) in the environment - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 581-582:237-257. [PMID: 28069306 DOI: 10.1016/j.scitotenv.2016.12.115] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 05/07/2023]
Abstract
Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) are derivatives of PAHs with at least one nitro-functional group (-NO2) on the aromatic ring. The toxic effects of several nitro-PAHs are more pronounced than those of PAHs. Some nitro-PAHs are classified as possible or probable human carcinogens by the International Agency for Research on Cancer. Nitro-PAHs are released into the environment from combustion of carbonaceous materials (e.g. fossil fuels, biomass, waste) and post-emission transformation of PAHs. Most studies on nitro-PAHs are about air (gas-phase and particulate matter), therefore less is known about the occurrence, concentrations, transport and fate of nitro-PAHs in soils, aquatic environment and biota. Studies on partition and exchange of nitro-PAHs between adjacent environmental compartments are also sparse. The concentrations of nitro-PAHs cannot easily be predicted from the intensity of anthropogenic activity or easily related to those of PAHs. This is because anthropogenic source strengths of nitro-PAHs are different from those of PAHs, and also nitro-PAHs have additional sources (formed by photochemical conversion of PAHs). The fate and transport of nitro-PAHs could be considerably different from their related PAHs because of their higher molecular weights and considerably different sorption mechanisms. Hence, specific knowledge on nitro-PAHs is required. Regulations on nitro-PAHs are also lacking. We present an extensive review of published literature on the sources, formation, physico-chemical properties, methods of determination, occurrence, concentration, transport, fate, (eco)toxicological and adverse health effects of nitro-PAHs. We also make suggestions and recommendations about data needs, and future research directions on nitro-PAHs. It is expected that this review will stimulate scientific discussion and provide the basis for further research and regulations on nitro-PAHs.
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Affiliation(s)
- Benjamin A Musa Bandowe
- Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Falkenplatz 16, 3012 Bern, Switzerland.
| | - Hannah Meusel
- Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
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Bogdal C, Niggeler N, Glüge J, Diefenbacher PS, Wächter D, Hungerbühler K. Temporal trends of chlorinated paraffins and polychlorinated biphenyls in Swiss soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:891-899. [PMID: 27876229 DOI: 10.1016/j.envpol.2016.10.073] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/24/2016] [Accepted: 10/26/2016] [Indexed: 05/22/2023]
Abstract
Persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), are ubiquitous environmental contaminants that have been targeted by national regulations since the 1970-1980s, followed in 2004 by the worldwide regulation under the Stockholm Convention on POPs. However, concerns are growing regarding the emergence of additional POP-like substances, such as chlorinated paraffins (CPs), which have particularly large production volumes. Whereas short-chain CPs (SCCPs) have recently been restricted in Europe and are currently under evaluation for inclusion into the Stockholm Convention, medium-chain CPs (MCCPs) have received little attention. On the one hand, temporal trends of CPs in the environment have hardly been investigated. On the other hand, the effectiveness of the Stockholm Convention on environmental levels of PCBs is still a matter of debate. Here, we reconstructed temporal trends of SCCPs, MCCPs, and PCBs in archived soil samples from six sampling sites in Switzerland, covering the period 1989-2014 (respectively 1988-2013 for one site). Concentrations of SCCPs have decreased in soil since 1994, which indicates positive effects of the reduction of production of SCCPs in Europe and the increasingly stringent regulation. However, the decline in soil is slow with a halving time of 18 years. Concentrations of MCCPs have continuously increased in soil over the entire period 1989-2014, with a doubling between 2009 and 2014. The concentrations of MCCPs have surpassed those of SCCPs, showing their relevance today, partly as replacements for SCCPs. Soil concentrations of PCBs peaked in 1999, i.e. three decades later than worldwide production and use of PCBs, but earlier than the entry into force of the Stockholm Convention. PCBs follow a decline in soil with a halving time of approx. 8 years. This study shows the usefulness of sample archives for the reconstruction and interpretation of time trends of persistent environmental contaminants.
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Affiliation(s)
- Christian Bogdal
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zürich, Switzerland.
| | - Nadja Niggeler
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Juliane Glüge
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Pascal S Diefenbacher
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Daniel Wächter
- Swiss Soil Monitoring Network (NABO), Agroscope, CH-8046 Zürich, Switzerland
| | - Konrad Hungerbühler
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zürich, Switzerland
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Nguyen TNT, Kwon HO, Lee YS, Kim L, Lee SE, Choi SD. Spatial distribution and source identification of indicator polychlorinated biphenyls in soil collected from the coastal multi-industrial city of Ulsan, South Korea for three consecutive years. CHEMOSPHERE 2016; 163:184-191. [PMID: 27537401 DOI: 10.1016/j.chemosphere.2016.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/01/2016] [Accepted: 08/02/2016] [Indexed: 06/06/2023]
Abstract
The concentrations, profiles, and source-receptor relationships of seven indicator polychlorinated biphenyls (PCBs) (#28, 52, 101, 118, 138, 153, and 180) found in soil at 25 rural, urban, and industrial sites in Ulsan, South Korea were investigated. For this study, 75 soil samples were collected, 25 each in January of 2011, 2012, and 2013. Principal component analysis was used to evaluate the influence of the emission sources on the soil samples. The concentrations of total seven PCBs (Σ7 PCBs) ranged between 0.034 ng/g and 143 ng/g (mean: 5.10 ng/g, median: 0.440 ng/g), which indicated slight or moderate contamination levels, respectively, compared to those in the other countries or other cities in Korea. The concentrations of Σ7 PCBs at the industrial and urban sites were significantly higher than those at the rural sites, due to the direct influence of emission sources related to industrial activities rather than urban emission sources. Generally, the profiles of PCBs were dominated by penta- and hexa-chlorinated biphenyls at all the study sites, suggesting common sources of PCBs in Ulsan. PCB source identification indicated that leakage from transformer oils in the major industrial complexes and PCB-containing paints used in the automobile and shipbuilding industrial complexes were possibly the main sources of indicator PCBs in the study areas.
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Affiliation(s)
- Tuyet Nam Thi Nguyen
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hye-Ok Kwon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Yun-Se Lee
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Leesun Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Sung-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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Olawoyin R. Application of backpropagation artificial neural network prediction model for the PAH bioremediation of polluted soil. CHEMOSPHERE 2016; 161:145-150. [PMID: 27424056 DOI: 10.1016/j.chemosphere.2016.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/01/2016] [Indexed: 06/06/2023]
Abstract
The backpropagation (BP) artificial neural network (ANN) is a renowned and extensively functional mathematical tool used for time-series predictions and approximations; which also define results for non-linear functions. ANNs are vital tools in the predictions of toxicant levels, such as polycyclic aromatic hydrocarbons (PAH) potentially derived from anthropogenic activities in the microenvironment. In the present work, BP ANN was used as a prediction tool to study the potential toxicity of PAH carcinogens (PAHcarc) in soils. Soil samples (16 × 4 = 64) were collected from locations in South-southern Nigeria. The concentration of PAHcarc in laboratory cultivated white melilot, Melilotus alba roots grown on treated soils was predicted using ANN model training. Results indicated the Levenberg-Marquardt back-propagation training algorithm converged in 2.5E+04 epochs at an average RMSE value of 1.06E-06. The averagedR(2) comparison between the measured and predicted outputs was 0.9994. It may be deduced from this study that, analytical processes involving environmental risk assessment as used in this study can successfully provide prompt prediction and source identification of major soil toxicants.
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Affiliation(s)
- Richard Olawoyin
- Environmental Health and Safety, School of Health Sciences, Oakland University, Rochester, MI, USA.
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26
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Glüge J, Bogdal C, Scheringer M, Hungerbühler K. What determines PCB concentrations in soils in rural and urban areas? Insights from a multi-media fate model for Switzerland as a case study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 550:1152-1162. [PMID: 26889948 DOI: 10.1016/j.scitotenv.2016.01.097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/13/2016] [Accepted: 01/15/2016] [Indexed: 06/05/2023]
Abstract
Polychlorinated biphenyls (PCBs) are banned worldwide under the Stockholm Convention on Persistent Organic Pollutants. However, PCBs are still emitted in appreciable amounts from remaining primary sources in urban areas or landfills and are ubiquitous environmental contaminants, inter alia in soil and air. Concentrations of PCBs have been measured in various media by numerous studies worldwide. However, monitoring data do not always provide quantitative information about transport processes between different media, deposition fluxes to ground, or distribution of PCBs between environmental compartments. Also future trends in environmental contamination by PCBs cannot be predicted from monitoring data, but such information is highly relevant for decision-makers. Here, we present a new regionally resolved dynamic multimedia mass balance model for Switzerland to investigate the origin of PCBs in air and to investigate their long-term fate and mass balance in the environment. The model was validated with existing field data for PCBs. We find that advective inflow of PCBs from outside Switzerland into the atmospheric boundary layer is responsible for 80% of PCBs present in air in Switzerland, whereas Swiss emissions cause the remaining 20%. Furthermore, we show that the atmospheric deposition of the higher-chlorinated PCBs is dominated by particle-bound deposition, whereas the deposition of the lower-chlorinated PCBs is a combination of particle-bound and gaseous deposition. The volume fraction of particles in air is in both cases an important factor driving the deposition of PCBs to ground and, thus, contributing to the higher concentrations of PCBs generally observed in populated and polluted areas. Regional emissions influence the deposition fluxes only to a limited extent. We also find that secondary emissions from environmental reservoirs do not exceed primary emissions for all PCB congeners until at least 2036. Finally, we use our model to evaluate the effect of chemical regulation on future environmental contamination by PCBs.
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Affiliation(s)
- Juliane Glüge
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zürich, Switzerland
| | - Christian Bogdal
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zürich, Switzerland; Institute for Sustainability Sciences, Agroscope, 8046 Zürich, Switzerland.
| | - Martin Scheringer
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zürich, Switzerland; Environmental Chemistry and Substance Dynamics, Leuphana University Lüneburg, 21335 Lüneburg, Germany
| | - Konrad Hungerbühler
- Institute for Chemical and Bioengineering, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zürich, Switzerland
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27
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Mayer P, Hilber I, Gouliarmou V, Hale SE, Cornelissen G, Bucheli TD. How to Determine the Environmental Exposure of PAHs Originating from Biochar. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:1941-1948. [PMID: 26777061 DOI: 10.1021/acs.est.5b05603] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Biochars are obtained by pyrolyzing biomass materials and are increasingly used within the agricultural sector. Owing to the production process, biochars can contain polycyclic aromatic hydrocarbons (PAHs) in the high mg/kg range, which makes the determination of the environmental exposure of PAHs originating from biochars relevant. However, PAH sorption to biochar is characterized by very high (10(4)-10(6) L/kg) or extreme distribution coefficients (KD) (>10(6) L/kg), which makes the determination of exposure scientifically and technically challenging. Cyclodextrin extractions, sorptive bioaccessibility extractions, Tenax extractions, contaminant traps, and equilibrium sampling were assessed and selected methods used for the determination of bioavailability parameters for PAHs in two model biochars. Results showed that: (1) the KD values of typically 10(6)-10(9) L/kg made the biochars often act as sinks, rather than sources, of PAHs. (2) Equilibrium sampling yielded freely dissolved concentrations (pg-ng/L range) that were below or near environmental background levels. (3) None of the methods were found to be suitable for the direct measurement of the readily desorbing fractions of PAHs (i.e., bioacessibility) in the two biochars. (4) The contaminant-trap method yielded desorption-resistant PAH fractions of typically 90-100%, implying bioaccessibility in the high μg/kg to low mg/kg range.
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Affiliation(s)
- Philipp Mayer
- Department of Environmental Engineering, DTU Environment, Technical University of Denmark , Miljøvej Bld. 113, DK-2800 Kgs. Lyngby, Denmark
| | - Isabel Hilber
- Agroscope ISS , Reckenholzstrasse 191, CH-8046 Zurich, Switzerland
| | - Varvara Gouliarmou
- Department of Environmental Science, Aarhus University , Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Sarah E Hale
- Department of Environmental Engineering, Norwegian Geotechnical Institute NGI , P.O. Box 3930 Ullevål Stadion, N-0806, Oslo, Norway
| | - Gerard Cornelissen
- Department of Environmental Engineering, Norwegian Geotechnical Institute NGI , P.O. Box 3930 Ullevål Stadion, N-0806, Oslo, Norway
- Department of Environmental Sciences (IMV), Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, NO-1432 Ås, Norway
- Department of Applied Environmental Sciences (ITM), Stockholm University , 10691 Stockholm, Sweden
| | - Thomas D Bucheli
- Agroscope ISS , Reckenholzstrasse 191, CH-8046 Zurich, Switzerland
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28
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Gubler A, Wächter D, Blum F, Bucheli TD. Remarkably constant PAH concentrations in Swiss soils over the last 30 years. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2015; 17:1816-1828. [PMID: 26347445 DOI: 10.1039/c5em00344j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Although polycyclic aromatic hydrocarbons (PAH) are of concern due to their carcinogenic, mutagenic, and teratogenic properties and their ubiquitous occurrence in environmental compartments, only few studies assessed the temporal evolutions of PAH contents of soils over extended time periods. The Swiss Soil Monitoring Network NABO runs long-term monitoring sites resampled every five years since the 1980s. In the present study, soil (0-20 cm) samples collected from 1985 through 2013 at 25 selected monitoring sites were analysed for the 16 priority PAH according to the U.S. EPA and five PAH marker substances. We observed divergent trends for light PAH, such as naphthalene and phenanthrene, compared with heavy PAH, such as benzo[a]pyrene and benzo[ghi]perylene. Whereas the former showed decreasing concentrations since the late 1980s, no significant trends were found for the latter. Furthermore, the analyses showed that naphthalene contents decreased most strongly at rural sites featuring low population densities, while phenanthrene contents generally decreased most strongly at semi-rural sites. The deviating evolutions of light and heavy PAH were mainly attributed to their differing physico-chemical properties. Temporal evolutions in soils contradict emission inventory data suggesting PAH emissions to decline since the 1980s.
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Affiliation(s)
- Andreas Gubler
- Swiss Soil Monitoring Network NABO, Agroscope, Reckenholzstr. 191, 8046 Zurich, Switzerland.
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29
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Obrist D, Zielinska B, Perlinger JA. Accumulation of polycyclic aromatic hydrocarbons (PAHs) and oxygenated PAHs (OPAHs) in organic and mineral soil horizons from four U.S. remote forests. CHEMOSPHERE 2015; 134:98-105. [PMID: 25929871 DOI: 10.1016/j.chemosphere.2015.03.087] [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: 10/22/2014] [Revised: 03/18/2015] [Accepted: 03/22/2015] [Indexed: 05/17/2023]
Abstract
We characterized distributions of 23 polycyclic aromatic hydrocarbons (Σ23PAH) and nine oxygenated PAHs (Σ9OPAH) in four remote forests. We observed highest Σ23PAH and Σ9OPAH concentrations in a coniferous forest in Florida, particularly in organic layers which we attributed to frequent prescribed burning. Across sites, Σ23PAH and Σ9OPAH concentrations strongly increased from surface to humidified organic layers (+1626%) where concentrations reached up to 584 ng g(-1). Concentrations in mineral soils were lower (average 37 ± 8 ng g(-1)); but when standardized per unit organic carbon (OC), PAH/OC and OPAH/OC ratios were at or above levels observed in organic layers. Accumulation in litter and soils (i.e., enrichment factors with depth) negatively correlated with octanol-water partition coefficients (Kow) and therefore was linked to water solubility of compounds. Concentrations of Σ9OPAHs ranged from 6 ± 6 ng g(-1) to 39 ± 25 ng g(-1) in organic layers, and from 3 ± 1 ng g(-1) to 11 ± 3 ng g(-1) in mineral soils, and were significantly and positively correlated to Σ23PAHs concentrations (r(2) of 0.90) across sites and horizons. While OPAH concentrations generally decreased from organic layers to mineral soil horizons, OPAH/OC ratios increased more strongly with depth compared to PAHs, in particular for anthrone, anthraquinone, fluorenone, and acenaphthenequinone. The strong vertical accumulation of OPAH relative to OC was exponentially and negatively correlated to C/N ratios (r(2)=0.67), a measure that often is used for tissue age. In fact, C/N ratios alone explained two-thirds of the variability in OPAH/OC ratios suggesting particularly high retention, sorption, and persistency of OPAHs in old, decomposed carbon fractions.
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Affiliation(s)
- Daniel Obrist
- Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA
| | - Barbara Zielinska
- Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA
| | - Judith A Perlinger
- Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI 49931, USA
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30
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Aichner B, Bussian BM, Lehnik-Habrink P, Hein S. Regionalized concentrations and fingerprints of polycyclic aromatic hydrocarbons (PAHs) in German forest soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2015; 203:31-39. [PMID: 25863006 DOI: 10.1016/j.envpol.2015.03.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 03/18/2015] [Accepted: 03/20/2015] [Indexed: 05/27/2023]
Abstract
Samples of 474 forest stands in Germany were analysed for concentrations of polycyclic aromatic hydrocarbons (PAHs) in three sampling depths. Enhanced concentrations were mainly found at spots relatively close to densely industrialized and urbanized regions and at some topographically elevated areas. Average enrichment factors between mineral soil and humic layer depend on humus type i.e. decrease from mull via moder to mor. Based on their compound-patterns, the observed samples could be assigned to three main clusters. For some parts of our study area a uniform assignment of samples to clusters over larger regions could be identified. For instance, samples taken at vicinity to brown-coal strip-mining districts are characterized by high relative abundances of low-molecular-weight PAHs. These results suggest that PAHs are more likely originated from local and regional emitters rather than from long-range transport and that specific source-regions can be identified based on PAH fingerprints.
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Affiliation(s)
- Bernhard Aichner
- Federal Institute for Materials Research and Testing (BAM), Division of Organic Environmental Analysis, Richard-Willstätter-Strße 11, 12489 Berlin, Germany; University of Potsdam, Institute of Earth and Environmental Science, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.
| | - Bernd M Bussian
- Federal Environment Agency (UBA), Section II 2.7 Soil Quality, Soil Monitoring, Wörlitzer Platz 1, 06844 Dessau-Roßlau, Germany
| | - Petra Lehnik-Habrink
- Federal Institute for Materials Research and Testing (BAM), Division of Organic Environmental Analysis, Richard-Willstätter-Strße 11, 12489 Berlin, Germany
| | - Sebastian Hein
- Federal Institute for Materials Research and Testing (BAM), Division of Organic Environmental Analysis, Richard-Willstätter-Strße 11, 12489 Berlin, Germany
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31
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Han YM, Bandowe BAM, Wei C, Cao JJ, Wilcke W, Wang GH, Ni HY, Jin ZD, An ZS, Yan BZ. Stronger association of polycyclic aromatic hydrocarbons with soot than with char in soils and sediments. CHEMOSPHERE 2015; 119:1335-1345. [PMID: 24656973 PMCID: PMC4756480 DOI: 10.1016/j.chemosphere.2014.02.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 01/24/2014] [Accepted: 02/04/2014] [Indexed: 05/19/2023]
Abstract
The knowledge of the association of polycyclic aromatic hydrocarbons (PAHs) with organic matter and carbonaceous materials is critical for a better understanding of their environmental transport, fate, and toxicological effects. Extensive studies have been done with regard to the relationship of PAHs with total organic carbon (TOC) and elemental carbon (EC) in different environmental matrices. The relationship between PAHs and the two subtypes of EC, char (combustion residues) and soot (produced via gas-to-particle conversion) also has been tested in field and laboratory experiments using reference materials. However, a direct comparison of associations of PAHs between with char and with soot in real environmental matrices has to our knowledge not yet been reported because of a lack of methodology to differentiate them. In this study, char and soot were measured using the IMPROVE method to test their associations with 12 EPA priority PAHs measured in topsoil samples (N=22, top 10 cm) collected from the Guanzhong Plain and in surface sediment samples (N=32, top 5 cm) from the Wei River (central China). In both soils and sediments, ∑12PAHs were more strongly associated with soot than with char, mainly due to the fact that soot and PAHs were produced in the same gas phase during combustion, had a strong affinity for each other, and were transported and deposited together, while char, the combustion residue, was transported differently to PAHs due to its large particle size. Stronger correlations between PAHs and the different carbon fractions (TOC, soot, and char) in sediments than in soils were observed, which is associated with the redistribution of PAHs among the organic matter pools in water because of the processes during soil erosion and sedimentation in the river.
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Affiliation(s)
- Y M Han
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - B A M Bandowe
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - C Wei
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland; University of Chinese Academy of Sciences, Beijing 100049, China
| | - J J Cao
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - W Wilcke
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - G H Wang
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - H Y Ni
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z D Jin
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z S An
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - B Z Yan
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
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Kamal A, Malik RN, Martellini T, Cincinelli A. Cancer risk evaluation of brick kiln workers exposed to dust bound PAHs in Punjab province (Pakistan). THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 493:562-70. [PMID: 24973936 DOI: 10.1016/j.scitotenv.2014.05.140] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 05/22/2014] [Accepted: 05/29/2014] [Indexed: 05/22/2023]
Abstract
Principal objective of this study was to evaluate the health risks of brick kiln workers to dust bound PAHs exposure in Punjab province (Pakistan). To this aim, surface dust samples were collected from brick kiln units located in Chung Khurd (Lahore city), Gujranwala city and Sohra village (in the vicinity of Gujranwala). The highest ΣPAH levels were measured in the dust samples collected in Sohdra village (mean 2578 ng g(-1) d.w., range 302-6757 ng g(-1) d.w.) followed by Gujranwala city (mean 957, range 16.1-1963 ng g(-1) d.w.) and Chung Khurd (mean 882, range 692-1007 ng g(-1) d.w.). Source identification using diagnostic ratios and principal component analysis identified coal and wood combustion as the major PAHs sources. The cancer risk model (CR-Model 1) and the Incremental Lifetime Cancer Risk model (ILCR-Model 2) were used to evaluate the cancer risk assessment via ingestion, inhalation and dermal contact pathways. Both models suggested that brick kiln workers (including adults and children) were exposed to high-potential carcinogenic risk via both ingestion and dermal contact pathways during the brick making process. This study also emphasizes the need for pollution control in the brick kiln industry of Pakistan.
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Affiliation(s)
- Atif Kamal
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Riffat Naseem Malik
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Tania Martellini
- Department of Chemistry, University of Florence, Via della Lastruccia, 3, Sesto Fiorentino, Florence 50019, Italy
| | - Alessandra Cincinelli
- Department of Chemistry, University of Florence, Via della Lastruccia, 3, Sesto Fiorentino, Florence 50019, Italy
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Gregoris E, Argiriadis E, Vecchiato M, Zambon S, De Pieri S, Donateo A, Contini D, Piazza R, Barbante C, Gambaro A. Gas-particle distributions, sources and health effects of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs) in Venice aerosols. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 476-477:393-405. [PMID: 24486495 DOI: 10.1016/j.scitotenv.2014.01.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
Air samples were collected in Venice during summer 2009 and 2012 to measure gas and particulate concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs). PCB-11, considered a marker for non-Aroclor contamination of the environment, was found for the first time in the Venetian lagoon and in Europe. An investigation on sources has been conducted, evidencing traffic as the major source of PAHs, whereas PCBs have a similar composition to Aroclor 1248 and 1254; in 2009 a release of PCN-42 has been hypothesized. Toxicological evaluation by TCA and TEQ methods, conducted for the first time in Venice air samples, identified BaP, PCB-126 and PCB-169 as the most important contributors to the total carcinogenic activity of PAHs and the total dioxin-like activity of PCBs and PCNs.
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Affiliation(s)
- Elena Gregoris
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Elena Argiriadis
- Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Marco Vecchiato
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy; Department of Environment, Earth and Physical Sciences, University of Siena, Strada Laterina 8, 53100 Siena, Italy.
| | - Stefano Zambon
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Silvia De Pieri
- Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Antonio Donateo
- Institute of Atmospheric Sciences and Climate, Italian National Research Council (ISAC-CNR), Strada Provinciale Lecce-Monteroni km 1,2, 73100 Lecce, Italy.
| | - Daniele Contini
- Institute of Atmospheric Sciences and Climate, Italian National Research Council (ISAC-CNR), Strada Provinciale Lecce-Monteroni km 1,2, 73100 Lecce, Italy.
| | - Rossano Piazza
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Carlo Barbante
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
| | - Andrea Gambaro
- Institute for the Dynamics of Environmental Processes, Italian National Research Council (IDPA-CNR), Dorsoduro 2137, 30123 Venice, Italy; Department of Environmental Science, Informatics and Statistics (DAIS), University Ca' Foscari of Venice, Dorsoduro 2137, 30123 Venice, Italy.
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Kuśmierz M, Oleszczuk P. Biochar production increases the polycyclic aromatic hydrocarbon content in surrounding soils and potential cancer risk. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:3646-52. [PMID: 24277430 PMCID: PMC3925498 DOI: 10.1007/s11356-013-2334-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 11/04/2013] [Indexed: 05/15/2023]
Abstract
The objectives of the study were the identification of the source of contamination of soils and estimation of the potential cancer risk that may be caused by contact with soils situated in the vicinity of biochar production sites. Samples of soils collected in the immediate vicinity of traditional biochar-producing plants, located within the area of the Bieszczady National Park (Poland), were analysed for the content of polycyclic aromatic hydrocarbons (PAHs). The sum of the content of 16 PAHs varied within the range of 1.80-101.3 μg/g, exceeding the norms permitted in many European countries. The calculated coefficients on the basis of which one can determine the origin of PAHs (molecular diagnostic ratios) demonstrated that the potential source of PAHs in the soils may be processes related with the production of biochar. Estimation on the basis of the results of incremental lifetime cancer risks (ILCRs) within the range of 2.33 · 10(-4)-1.05 · 10(-1) indicated that the soils studied may constitute a significant cancer risk for persons who have contact with them. The values of ILCRS should be considered as at least high, which permits the conclusion that sites of that type may create a hazard to human health.
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Affiliation(s)
- Marcin Kuśmierz
- Department of Environmental Chemistry, Faculty of Chemistry, 3 Maria Curie-Skłodowska Square, Lublin, 20-031 Poland
| | - Patryk Oleszczuk
- Department of Environmental Chemistry, Faculty of Chemistry, 3 Maria Curie-Skłodowska Square, Lublin, 20-031 Poland
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Schroeder P, Belis CA, Schnelle-Kreis J, Herzig R, Prevot ASH, Raveton M, Kirchner M, Catinon M. Why air quality in the Alps remains a matter of concern. The impact of organic pollutants in the alpine area. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:252-267. [PMID: 24046224 DOI: 10.1007/s11356-013-2058-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/01/2013] [Indexed: 06/02/2023]
Abstract
In the middle of Europe, the Alps form a geographical and meteorological trap for atmospheric pollutants including volatile and semi-volatile organic compounds emitted in the surrounding lowlands. This is due to their barrier effects, high precipitation rates, and low ambient temperatures. Also the pollutants emitted in the cities inside the Alps spread in the region depending on orographic and meteorological conditions. Although a number of studies on the distribution and effect of pollutants in the Alps has been published, comprehensive information on potential hazards, and ways to improve this sensible environment are lacking. This opinion paper is the result of a discussion during the Winterseminar of the AlpsBioCluster project in Munich. It summarizes the current literature and presents some case studies on local pollution sources in the Alps, and the possibility of using biomonitoring techniques to assess critical pollution loads and distributions.
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Affiliation(s)
- P Schroeder
- Helmholtz Zentrum München, GmbH, Research Unit Microbe Plant Interactions, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany,
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Callén MS, López JM, Iturmendi A, Mastral AM. Nature and sources of particle associated polycyclic aromatic hydrocarbons (PAH) in the atmospheric environment of an urban area. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 183:166-74. [PMID: 23245526 DOI: 10.1016/j.envpol.2012.11.009] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 11/05/2012] [Accepted: 11/10/2012] [Indexed: 05/26/2023]
Abstract
The total PAH associated to the airborne particulate matter (PM10) was apportioned by one receptor model based on positive matrix factorization (PMF) in an urban environment (Zaragoza city, Spain) during February 2010-January 2011. Four sources associated with coal combustion, gasoline, vehicular and stationary emissions were identified, allowing a good modelling of the total PAH (R(2) = 0.99). A seasonal behaviour of the four factors was obtained with higher concentrations in the cold season. The NE direction was one of the predominant directions showing the negative impact of industrial parks, a paper factory and a highway located in that direction. Samples were classified according to hierarchical cluster analysis obtaining that, episodes with the most negative impact on human health (the highest lifetime cancer risk concentrations), were produced by a higher contribution of stationary and vehicular emissions in winter season favoured by high relative humidity, low temperature and low wind speed.
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Affiliation(s)
- M S Callén
- Department of Energy and Environment, Instituto de Carboquímica (ICB-CSIC), Zaragoza 50018, Spain.
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37
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Maliszewska-Kordybach B, Smreczak B, Klimkowicz-Pawlas A. The levels and composition of persistent organic pollutants in alluvial agriculture soils affected by flooding. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:9935-48. [PMID: 23877573 DOI: 10.1007/s10661-013-3303-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 06/11/2013] [Indexed: 05/15/2023]
Abstract
The concentrations and composition of persistent organic pollutants (POPs) were determined in alluvial soils subjected to heavy flooding in a rural region of Poland. Soil samples (n = 30) were collected from the upper soil layer from a 70-km(2) area. Chemical determinations included basic physicochemical properties and the contents of polychlorinated biphenyls (PCBs), hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs) and polycyclic aromatic hydrocarbons (PAHs, 16 compounds). The median concentrations of Σ7PCB (PCB28 + PCB52 + PCB101 + PCB118 + PCB138 + PCB153 + PCB180), Σ3HCH (α-HCH + β-HCH + γ-HCH) and Σ3pp'(DDT + DDE + DDD) were 1.60 ± 1.03, 0.22 ± 0.13 and 25.18 ± 82.70 μg kg(-1), respectively. The median concentrations of the most abundant PAHs, phenanthrene, fluoranthene, pyrene, benzo[b]fluoranthene and benzo[a]pyrene were 50 ± 37, 38 ± 27, 29 ± 30, 45 ± 36 and 24 ± 22 μg kg(-1), respectively. Compared with elsewhere in the world, the overall level of contamination with POPs was low and similar to the levels in agricultural soils from neighbouring countries, except for benzo[a]pyrene and DDT. There was no evidence that flooding affected the levels of POPs in the studied soils. The patterns observed for PAHs and PCBs indicate that atmospheric deposition is the most important long-term source of these contaminants. DDTs were the dominant organochlorine pesticides (up to 99%), and the contribution of the parent pp' isomer was up to 50 % of the ΣDDT, which indicates the advantage of aged contamination. A high pp'DDE/pp'DDD ratio suggests the prevalence of aerobic transformations of parent DDT. Dominance of the γ isomer in the HCHs implies historical use of lindane in the area. The effect of soil properties on the POP concentrations was rather weak, although statistically significant links with the content of the <0.02-mm fraction, Ctotal or Ntotal were observed for some individual compounds in the PCB group.
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Affiliation(s)
- Barbara Maliszewska-Kordybach
- Department of Soil Science and Land Conservation, Institute of Soil Science and Plant Cultivation, State Research Institute, ul. Czartoryskich 8, 24-100, Pulawy, Poland,
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Aichner B, Bussian B, Lehnik-Habrink P, Hein S. Levels and spatial distribution of persistent organic pollutants in the environment: a case study of German forest soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:12703-14. [PMID: 24050388 DOI: 10.1021/es4019833] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The Of/Oh-horizons of 447 forest stands in Germany were evaluated for concentrations and spatial distribution of selected polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs). While concentrations of dichlorodiphenyltrichloroethane (DDT) and PCBs show similar spatial distribution patterns for all measured compounds within each compound class, significantly different distributions were identified for concentrations of low-molecular-weight PAHs [2- and 3-ring PAHs plus fluoranthene (FLA) and pyrene (PYR)] in contrast to high-molecular-weight PAHs (4-6-ring PAHs without FLA and PYR). Maxima of persistent organic pollutant (POP) concentrations could be mostly explained by specific locatable sources. Because of the slow degradation rates of these target substances, this is especially relevant for historic contamination sources, such as extensive 1980s DDT usage in the former German Democratic Republic and industrial facilities that produced hexachlorobenzene (HCB) or PCBs. A contribution of ubiquitous background pollution derived from long-range atmospheric transport is likely for some compounds in the studied area, e.g., DDT in the western part of Germany and dieldrin. However, most target compounds appear to be mainly sourced from local or regional emissions. This is supported by the absence of clear dependencies between POP concentrations and most evaluated environmental and local parameters. We suggest that these results generally reflect the distribution of POPs in densely populated and industrialized countries located in temperate regions.
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Affiliation(s)
- Bernhard Aichner
- Federal Institute for Materials Research and Testing (BAM) , Richard-Willstätter-Strße 11, 12489 Berlin, Germany
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39
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Yang D, Qi S, Zhang Y, Xing X, Liu H, Qu C, Liu J, Li F. Levels, sources and potential risks of polycyclic aromatic hydrocarbons (PAHs) in multimedia environment along the Jinjiang River mainstream to Quanzhou Bay, China. MARINE POLLUTION BULLETIN 2013; 76:298-306. [PMID: 24055459 DOI: 10.1016/j.marpolbul.2013.08.016] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 05/27/2023]
Abstract
This study investigated the levels, sources and potential risks of polycyclic aromatic hydrocarbons (PAHs) in soil, water (dissolved phase, suspended particulate matter) and sediment along the Jinjiang River mainstream to Quanzhou Bay. The distribution coefficient of ΣPAHs varied disorderly along the Jinjiang River, indicating the non-equilibrium status for the partition. The various distribution features of ΣPAHs in the sediments of the north and south coast of Quanzhou Bay were probably due to the flow motions in the bay. High correlations of PAHs were found between different media, suggesting the approximately same source of PAHs. Furthermore, three source factors and their contributions were extracted using the positive matrix factorization model. Toxicity and biological risk were assessed using toxic equivalent quantity and sediment quality guideline quotient. The contamination of PAHs in the soil and sediments may turn to unconspicuous risks for the environment and humans except very few sites with moderate pollution.
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Affiliation(s)
- Dan Yang
- Faculty of Engineering, China University of Geosciences, Wuhan 430074, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
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40
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Salihoglu G, Tasdemir Y, Salihoglu NK, Baskaya HS, Aksoy E. Seasonal variations of polychlorinated biphenyls in surface soils and air-soil exchange in Bursa, Turkey. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2013; 65:619-634. [PMID: 23963119 DOI: 10.1007/s00244-013-9943-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Accepted: 07/22/2013] [Indexed: 06/02/2023]
Abstract
This study investigates the seasonality of polychlorinated biphenyl (PCB) levels in soils of Bursa city located in northwestern Turkey. Forty-three soil samples were collected each season during a 1-year period. Air and soil samples were collected concurrently 3 or 3 times in a month during a 1-year monitoring period from 2 of the 43 locations. The samples were analyzed for 83 PCB congeners. Flux levels, fugacity fraction (ff) levels, and net flux levels of PCB congeners were calculated for 2 specific regions. The influence of humic substance and total organic carbon content of soil on PCB levels was also examined. The mean concentrations of the total PCBs were 1275 ± 1120, 4075 ± 2740, 2185 ± 2010, and 1150 ± 1540 pg/g dry weight in spring, summer, autumn, and winter seasons, respectively. Four- and 5- CBs were the most abundant homologue groups in soils, and their contribution to the total was 55 %. PCB-74, followed by PCB-153, was the dominant congener. Air and soil PCB levels increased together with the soil temperature suggesting the influence of instantaneous air-soil exchange toward the equilibrium conditions. Flux and ff levels also showed a positive significant correlation with soil temperature. Flux levels were mostly positive for the 2 regions indicating volatilization from soil to air.
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Affiliation(s)
- Güray Salihoglu
- Department of Environmental Engineering, Faculty of Engineering and Architecture, Uludag University, 16059, Bursa, Turkey
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41
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Rhind SM, Kyle CE, Kerr C, Osprey M, Zhang ZL, Duff EI, Lilly A, Nolan A, Hudson G, Towers W, Bell J, Coull M, McKenzie C. Concentrations and geographic distribution of selected organic pollutants in Scottish surface soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 182:15-27. [PMID: 23892068 DOI: 10.1016/j.envpol.2013.06.041] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 06/03/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Concentrations of selected persistent organic pollutants (POPs) representing three chemical classes (polycyclic aromatic hydrocarbons (PAH), polybrominated diphenyl ethers (PBDE) and polychlorinated biphenyls (PCB) and the organic pollutant diethylhexyl phthalate (DEHP), were determined in surface soil samples (0-5 cm) collected at 20 km grid intersects throughout Scotland over a three-year period. Detectable amounts of all chemical classes and most individual congeners were present in all samples. There were no consistent effects of soil or vegetation type, soil carbon content, pH, altitude or distance from centres of population on concentrations which exhibited extreme variation, even in adjacent samples. It is concluded that soil POPs and DEHP concentrations and associated rates of animal and human exposure were highly variable, influenced by multiple, interacting factors, and not clearly related to local sources but possibly related to wet atmospheric deposition and the organic carbon content of the soil.
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Affiliation(s)
- S M Rhind
- The James Hutton Institute, Craigiebuckler, Aberdeen AB15 8QH, UK
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Ortega-Calvo JJ, Tejeda-Agredano MC, Jimenez-Sanchez C, Congiu E, Sungthong R, Niqui-Arroyo JL, Cantos M. Is it possible to increase bioavailability but not environmental risk of PAHs in bioremediation? JOURNAL OF HAZARDOUS MATERIALS 2013; 261:733-45. [PMID: 23583067 DOI: 10.1016/j.jhazmat.2013.03.042] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 02/28/2013] [Accepted: 03/16/2013] [Indexed: 05/21/2023]
Abstract
The current poor predictability of end points associated with the bioremediation of polycyclic aromatic hydrocarbons (PAHs) is a large limitation when evaluating its viability for treating contaminated soils and sediments. However, we have seen a wide range of innovations in recent years, such as an the improved use of surfactants, the chemotactic mobilization of bacterial inoculants, the selective biostimulation at pollutant interfaces, rhizoremediation and electrobioremediation, which increase the bioavailability of PAHs but do not necessarily increase the risk to the environment. The integration of these strategies into practical remediation protocols would be beneficial to the bioremediation industry, as well as improve the quality of the environment.
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Affiliation(s)
- J J Ortega-Calvo
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Apartado 1052, E-41080 Seville, Spain.
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Cachada A, Pato P, Rocha-Santos T, da Silva EF, Duarte AC. Levels, sources and potential human health risks of organic pollutants in urban soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 430:184-192. [PMID: 22652008 DOI: 10.1016/j.scitotenv.2012.04.075] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 04/29/2012] [Accepted: 04/30/2012] [Indexed: 06/01/2023]
Abstract
Urban soil quality may be severely affected by PAH and PCB contamination, impairing environmental and human health. A comprehensive study was conducted in two contrasting Portuguese urban areas (Lisbon and Viseu) in order to assess the levels of these contaminants and potential risks to human health, to identify sources and study their behavior in soils. The concentrations of PAHs and PCBs were related to the size of the city. The concentrations found in the larger city (Lisbon) were similar to other urban areas. Differences between profiles of the two urban areas were observed for both groups of contaminants, which could be attributed to differences of sources or climate. Lisbon seems to be affected by nearby sources (traffic, industry and incineration processes) whereas in the smaller city atmospheric transport may be playing an important role. Cluster analysis revealed that PAHs and PCBs were associated with anthropogenic toxic elements (Cu, Pb, Zn and Hg in Lisbon; Pb and Hg in Viseu), therefore reflecting common sources. It was also found that organic carbon was an important factor for PAHs and high chlorinated PCB retention in soils. The incremental probability of developing cancer over lifetime, based on a reasonable maximum exposure to PAHs present in Lisbon residential soils, was 9.0 × 10(-6) and 2.4 × 10(-6) for an occupational exposure, both slightly higher than the target risk of 1 × 10(-6). Similarly, the mutagenic risk of PAHs in Lisbon was 3.3 × 10(-5) for residential soils and 1.8 × 10(-6) in recreational areas.
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Affiliation(s)
- A Cachada
- University of Aveiro, Department of Chemistry & CESAM, Campus de Santiago, 3810-193 Aveiro, Portugal.
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44
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Hilber I, Blum F, Leifeld J, Schmidt HP, Bucheli TD. Quantitative determination of PAHs in biochar: a prerequisite to ensure its quality and safe application. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3042-50. [PMID: 22397545 DOI: 10.1021/jf205278v] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Biochar is increasingly promoted as a beneficial soil conditioner. However, it may contain residues of polycyclic aromatic hydrocarbons (PAHs) as a result of its production by pyrolysis. To date, analytical methods to analyze PAHs in biochar quantitatively are hardly available. This study presents an optimized and validated procedure to quantify the 16 U.S. EPA PAHs in biochar. PAHs were best extracted with Soxhlet for 36 h using 100% toluene. Average absolute recoveries of isotope labeled internal standards used for each analyte from three different biochars ranged from 42% to 72%, and relative recoveries were between 71% and 105%. The limits of detection were biochar-dependent, but on average a factor of >50 lower than quantified PAH concentrations (9-355 mg kg(dry weight)(-1)). The established method prepares the ground for a harmonized protocol for PAH analysis of biochars, a necessity for biochar quality control, registration, and legislation.
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Affiliation(s)
- Isabel Hilber
- Agroscope Reckenholz-Tänikon, Research Station ART, Reckenholzstrasse 191, 8046 Zürich, Switzerland
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45
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Cachada A, Pereira ME, Ferreira da Silva E, Duarte AC. Sources of potentially toxic elements and organic pollutants in an urban area subjected to an industrial impact. ENVIRONMENTAL MONITORING AND ASSESSMENT 2012; 184:15-32. [PMID: 21409365 DOI: 10.1007/s10661-011-1943-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Accepted: 02/09/2011] [Indexed: 05/30/2023]
Abstract
Urban and industrial development has caused a major impact on environmental soil quality. This work assesses the extent and severity of contamination in a small urban area subjected to an industrial impact and identifies the major anthropogenic inputs. Twenty-six soil samples were collected from agricultural and urban sites, and concentrations of potentially toxic elements (As, Cd, Cu, Cr, Fe, Mn, Ni, Pb and Zn), PAHs and PCBs, were determined. In spite of the low median concentrations observed, some sites represent a potential hazard for human health and ecosystems. Concentrations of contaminants were higher than those found in a nearby city, indicating that the study area is affected by the surrounding industry. The use of multivariate statistical analyses allowed for the identification of the main factors controlling the variability of potentially toxic elements and organic pollutants in the soils. The presence of Cr, Fe, Mn and Ni was associated with geogenic inputs, and Cu, Pb, Zn, As, PAHs and PCBs were associated with anthropogenic inputs. Industry and traffic were the most important anthropogenic sources. Soil characteristics were identified as important factors controlling the spatial variability of elements, both from recognised natural and anthropogenic origin. Differences between land uses were observed, which may be attributed to both management practices and proximity to sources.
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Affiliation(s)
- Anabela Cachada
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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Posada-Baquero R, Ortega-Calvo JJ. Recalcitrance of polycyclic aromatic hydrocarbons in soil contributes to background pollution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:3692-3699. [PMID: 21840092 DOI: 10.1016/j.envpol.2011.07.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 07/11/2011] [Accepted: 07/18/2011] [Indexed: 05/31/2023]
Abstract
The microbial accessibility of native phenanthrene and pyrene was determined in soils representing background scenarios for pollution by polycyclic aromatic hydrocarbons (PAHs). The soils were selected to cover a wide range of concentrations of organic matter (1.7-10.0%) and total PAHs (85-952 μg/kg). The experiments included radiorespirometry determinations of biodegradation with (14)C-labeled phenanthrene and pyrene and chemical analyses to determine the residual concentrations of the native compounds. Part of the tests relied on the spontaneous biodegradation of the chemicals by native microorganisms; another part also involved inoculation with PAH-degrading bacteria. The results showed the recalcitrance of PAHs already present in the soils. Even after extensive mineralization of the added (14)C-PAHs, the concentrations of native phenanthrene and pyrene did not significantly decrease. We suggest that aging processes operating at background concentrations may contribute to recalcitrance and, therefore, to ubiquitous pollution by PAHs in soils.
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Affiliation(s)
- Rosa Posada-Baquero
- Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, Apartado 1052, E-41080 Seville, Spain
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Agarwal T, Bucheli TD. Adaptation, validation and application of the chemo-thermal oxidation method to quantify black carbon in soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:532-538. [PMID: 21071122 DOI: 10.1016/j.envpol.2010.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Revised: 10/04/2010] [Accepted: 10/10/2010] [Indexed: 05/27/2023]
Abstract
The chemo-thermal oxidation method at 375°C (CTO-375) has been widely used to quantify black carbon (BC) in sediments. In the present study, CTO-375 was tested and adapted for application to soil, accounting for some matrix specific properties like high organic carbon (≤ 39%) and carbonate (≤ 37%) content. Average recoveries of standard reference material SRM-2975 ranged from 25 to 86% for nine representative Swiss and Indian samples, which is similar to literature data for sediments. The adapted method was applied to selected samples of the Swiss soil monitoring network (NABO). BC content exhibited different patterns in three soil profiles while contribution of BC to TOC was found maximum below the topsoil at all three sites, however at different depths (60-130 cm). Six different NABO sites exhibited largely constant BC concentrations over the last 25 years, with short-term (6 months) prevailing over long-term (5 years) temporal fluctuations.
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Affiliation(s)
- Tripti Agarwal
- Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, 8046 Zürich, Switzerland
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Wu S, Xia X, Yang L, Liu H. Distribution, source and risk assessment of polychlorinated biphenyls (PCBs) in urban soils of Beijing, China. CHEMOSPHERE 2011; 82:732-738. [PMID: 21094974 DOI: 10.1016/j.chemosphere.2010.10.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Revised: 10/18/2010] [Accepted: 10/31/2010] [Indexed: 05/26/2023]
Abstract
The concentration of PCBs in urban soils of Beijing across six land types including business districts (BD), cultural and educational areas (CE), classical gardens (CG), public green (PG), residential areas (RA), and roadsides (RD) was investigated. The total concentrations of PCBs ranged from below method detection limit (M.D.L.) to 37.11×10(-3)mgkg(-1) dry weight (mean: 11.70×10(-3)mgkg(-1); median: 13.28×10(-3)mgkg(-1)), which was at a medium level compared with other cities around the world. In general, the levels of PCBs decreased from the center of Beijing city to the suburb, suggesting the increasing PCBs concentrations with the age of the urban area. For different types of land use, the highest level of PCBs was observed in CG soils which have the oldest age, and the homologue profiles were similar, which were predominated by lowly chlorinated congeners including di-, tri- and tetra-CBs. Principal component analysis indicated that local sources such as Aroclor 1016, 1242, and 1248 were important sources in addition to long-range transport of PCBs all over the world. Although the toxic equivalency (TEQ) concentrations of dioxin-like PCBs in all soil samples of Beijing were higher than those in other urban areas of China, they met the Canadian soil quality standard.
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Affiliation(s)
- Shan Wu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
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Agarwal T, Bucheli TD. Is black carbon a better predictor of polycyclic aromatic hydrocarbon distribution in soils than total organic carbon? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:64-70. [PMID: 20951482 DOI: 10.1016/j.envpol.2010.09.016] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Revised: 09/14/2010] [Accepted: 09/19/2010] [Indexed: 05/30/2023]
Abstract
Black carbon (BC) and total organic carbon (TOC) were quantified in the surface soils of Switzerland (N=105) and Delhi (N=36), India, to examine their relationships with contents of polycyclic aromatic hydrocarbons (PAH). BC content in Swiss (background) soils (N=104) varied from 0.41 to 4.75 mg/g (median: 1.13 mg/g) and constituted 1-9% (median: 3%) of TOC. Indian (urban) soils had similar BC concentrations (0.37-2.05 mg/g, median: 1.19 mg/g), with relatively higher BC/TOC (6-23%, median: 13%). Similar to TOC, BC showed significant positive correlation with lighter PAH, but no correlation with heavier PAH in Swiss soils. In contrast, heavier PAH were significantly correlated only with BC in Delhi soils. It seems that TOC governs the distribution of PAH in organic matter rich background soils, while the proximity to emission sources is reflected by BC-PAH association in urban soils.
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Affiliation(s)
- Tripti Agarwal
- Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, 8046 Zürich, Switzerland
| | - Thomas D Bucheli
- Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, 8046 Zürich, Switzerland.
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