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Simultaneous monitoring of PCB profiles in the urban air of Dalian,China with active and passive samplings

Journal of Environmental Sciences 2013年第1期25卷 133-143页

作者： Qian Xu Xiuhua Zhu Bernhard Henkelmann Karl-Werner Schramm Jiping Chen Yuwen Ni Wei Wang gerd pfister Jun Mu Songtao Qin Yan Li School of Environmental and Chemical Engineering Dalian Jiaotong University Helmholtz Zentrum München-German Research Center for Environmental Health Molecular EXposomics (MEX)Ingolstdter Landstr.1D-85764 NeuherbergMunichGermany Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Meteorological Observatory

The concentration of polychlorinated biphenyls （PCBs） in the urban air of Dalian, China was monitored from November 2009 to October 2010 with active high-volume sampler and semipermeable membrane device （SPMD） passive sampler. The concentration of PCBs （particle ＋ gas）（∑PCBs） ranged from 18.6 to 91.0 pg/m3, with an average of 50.9 pg/m3, and the most abundant dioxin-like PCB （DL-PCBs） was PCB118. The WHO-TEQ values of DL-PCBs were 3.6--22.1 fg/m3, with an average of 8.5 fg/m3, and PCB126 was the maximum contributor to ZTEQ. There was a much larger amount of PCBs in the gas phase than in the particulate phase. The dominant PCB components were lower and middle molecular weight PCBs. With increasing chlorination level, the concentration of the PCB congeners in the air decreased. The gas-particulate partitioning of PCBs was different for the four seasons. The gas- particulate partitioning coefficients （logKp） vs. subcooled liquid vapor pressures （logPL~） of PCBs had reasonable correlations for different sampling sites and seasons. The absorption mechanism contributed more to the gas-particulate partitioning process than adsorption. Correlation analysis of meteorological parameters with the concentration of PCBs was conducted using SPSS packages. The ambient temperature and atmospheric pressure were important factors influencing the concentration of PCBs in the air. The distribution pattern of the congeners of PCBs and the dominant contributors to DL-PCBs and TEQ in active samples and SPMDs passive samples were similar. SPMD mainly sequestrated gas phase PCBs.

关键词： air polychlorinated biphenyls gas-particulate partitioning semipermeable membrance device Dalian China

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Levels and distribution of polybrominated diphenyl ethers in Three Gorges Reservoir,China

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Emerging Contaminants 2017年第1期3卷 40-45页

作者： Jingxian Wang Yonghong Bi Bernhard Henkelmann Zeyu Wang gerd pfister Karl-Werner Schramm State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan430072China Helmholtz Zentrum München-German Research Center for Environmental Health(GmbH) Molecular EXposomics(MEX)Ingolst€adter Landstr.1D-85764NeuherbergGermany Technische Universit€at München Wissenschaftszentrum Weihenstephan für Ern€ahrungLandnutzung und UmweltDepartment für BiowissenschaftenWeihenstephaner Steig 2385350FreisingGermany Department of Engineering University of WaterlooOntarioCanada

Polybrominated diphenyl ethers(PBDEs)were investigated in water,sediments,suspended sediments and biofilms in Three Gorges Reservoir(TGR),China.Results showed that dissolved bioavailable PBDEs in water of TGR collected with semipermeable membrane device(SPMD)-based virtual organisms(VOs)were very low in the range of n.***.to 811 pg/g lipid and the detected compounds were mainly low molecular BDEs such as BDE-15,17,28,47,49,66,99 and 100.The PBDE levels in the sediment core collected near the dam were also very low in the range of 84e300 pg/g dw and the detected compounds were mainly large molecular BDEs such as BDE-196,197,206,207 and 208.In suspended sediments and biofilms,the levels of PBDEs ranged from 298 to 52,843 pg/g dw and the detected compounds were also mainly large molecular BDEs such as BDE-196,197,201,203,206,207,208 and 209.The dominant compound was BDE-209 which accounted for more than 90%of the total BDEs.Therefore,large molecular BDEs tended to be attached on fine particles.The vertical profile of BDEs on suspended sediments(SS)showed that SSs in the middle depth of water contained high level of BDE-209.The phenomenon indicated that most of BDE-209 did not settle into the sediment in front of the dam,instead transported further to downstream.

关键词： PBDE Virtual organism(VO) Sediment Suspended sediment(SS) Biofilm Three Gorges Reservoir(TGR)

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Monitoring of organochlorine pesticides in the urban air of Dalian, China with semipermeable membrane devices

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Chinese Science Bulletin 2014年第24期59卷 2957-2965页

作者： Xiuhua Zhu Taian Shi Bernhard Henkelmann gerd pfister Wei Wang Jun Mu Xiaoxiao Li Liangjun Han Karl-Werner Schramm School of Environmental and Chemical Engineering Dalian Jiaotong University Helmholtz Center Munich-German Research Center for Environmental Health (GmbH) Molecular EXposomics (MEX)Ingolstdter Landstr. 1 85764 Neuherberg Munich Germany Dalian Meteorological Observatory Department fr Biowissenschaften Technische Universitt Mnchen Weihenstephaner Steig 23 85350 Freising Germany

The concentrations of 28 organochlorine pesticides(OCPs)in the urban air of Dalian,China were measured using semipermeable membrane devices(SPMDs)for the first time.Alpha-hexachlorocyclohexane(a-HCH),b-HCH,pentachlorobenzene(PentCB),hexachlorobenzene(HexCB),4,40-dichlorodiphenyltrichloroethane(4,40-DDT),4,40-dichlorodiphenyldichloroethene,endosulfan-I and endosulfan-II were the predominant OCPs in the urban air of Dalian.The concentration of OCPs sequestrated by SPMDs(CSPMD)ranged from undetected to 56,772 pg SPMD-1and had a linear correlation with the reciprocal of the average ambient atmospheric temperature(1/T).The CSPMDof PentCB and HexCB had negative correlations with T,whereas the other detected OCPs had a positive correlation.The source of HCHs,DDTs,HexCB,PentCB,chlordane,and endosulfan in the air were also evaluated.The OCPs in the urban air of Dalian could be attributed to the seasonal usage of pesticides,combustion,volatilization of aged OCPs from soil,water,plants,and long-range atmospheric transport.

关键词：有机氯农药半透膜装置空气监测城市空气二氯二苯基三氯乙烷大连中国浓度范围

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Evaluation of Estrogenic Receptor (ER) and Aryl Hydrocarbon Receptor (AhR) Agonists in Three Gorges Reservoir, China Using SPMD-Based Virtual Organisms

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Journal of Environmental Protection 2016年第3期7卷 323-330页

作者： Jingxian Wang Bernhard Henkelmann Toine F. H. Bovee gerd pfister Liang Zhang Karl-Werner Schramm State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan China Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH) Molecular EXposomics (MEX) Munich Germany Department of Toxicology & Bioassays RIKILT Institute of Food Safety Wageningen The Netherlands School of Environmental Science and Engineering Liaoning Technical University Fuxin China

The evaluation of estrogenic activities and aryl hydrocarbon receptor (AhR) agonists in water from Three Gorges Reservoir (TGR) China was conducted by in vitro bioassays combined with SPMD-based virtual organisms (VO). VOs were deployed at seven sites in the Three Gorges Reservoir (TGR), China for two periods in 2009. The estrogenic activity was assessed using a rapid yeast estrogen bioassay, based on the expression of a green fluorescent reporter protein (yEGFP). The AhR activity was detected employing rat hepatoma cell line (H4IIE). The results indicate that AhR agonists distributed widely in water of TGR and almost homogenously distributed in most area of TGR. Weak antiestrogenic activities were also found homogenously distributed in water of TGR. Further studies are needed to determine the identities of these estrogenic compounds and AhR agonists and their potential adverse effects on wild biota in TGR.

关键词： ER Activity EROD Activity Three Gorges Reservoir Virtual Organism Semipermeable Membrane Device

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