Dietary exposure to persistent organochlorine pesticides in 2007 Chinese total diet study |
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| Affiliation: | 1. Key Lab of Chemical Safety and Health, National Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, No. 7, Panjiayuan nanli Road, Chaoyang District, Beijing 100021, PR China;2. Beijing Center for Disease Control and Prevention, No. 16, Hepingli Middle Street, Dongcheng District, Beijing 100013, PR China;3. College of Veterinary Medicine, China Agricultural University, No. 2, Yuan Ming Yuan West Road, Haidian District, Beijing 100094, PR China;1. International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China;2. IJRC-PTS, MOE Key Laboratory of Environmental Remediation and Ecosystem Health, Zhejiang University, Hangzhou 310058, China;3. Environmental Protection Research Institute, Hangzhou Normal University, Hangzhou 310012, China;4. IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China;1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 210044 Nanjing, PR China;2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008 Nanjing, PR China;3. College of Geographical Surveying and Rural-Urban Planning, Jiangsu Normal University, 221116 Xuzhou, PR China;1. Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China;2. Key Laboratory of Chemical Safety and Health, China National Center for Food Safety Risk Assessment, Beijing 100050, China;1. State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China;2. Yunnan Construction and Investment Holding Group Co., Ltd., Kunming, 650501, PR China;1. Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Space and Environment, Beihang University, Beijing 100191, China;2. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;3. Institute of Environment and Health, Jianghan University, Wuhan 430056, China;4. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;5. NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment Beijing 100021, China |
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| Abstract: | Dietary exposure to persistent organochlorine pesticides (OCPs) was assessed for Chinese populations, using the total diet study (TDS) approach in 2007. Multistage random cluster sampling method was used in this study. 108 composite samples, representative of foods “as consumed” by the Chinese were analyzed for residues of OCPs by a multi-residue method. The result showed that hexachlorobenzene (HCB), dichloro-diphenyl-trichloroethane (DDT), chlordane compounds (CHLs), hexachlorocyclohexane (HCH) and heptachlor could be detected in, respectively 84%, 39%, 37%, 13% and 5% of all samples. Concentrations of DDT in all samples ranged from undetectable levels to 72.2 μg/kg. Others were minor components in the OCPs profile. The residual levels of OCPs were significantly below the Extraneous Maximum Residue Limits (EMRLs). Based on the 2000 nationwide food consumption survey, the average dietary exposure of the Chinese to DDT, HCH, HCB, CHLs, and heptachlor was estimated to be 0.016, 0.002, 0.009, 0.006, and 0.001 μg/kg body weight per day respectively, showing a significant decrease trend compared with the past. The major food groups contributing to dietary OCPs were aquatic foods, meats, and cereals. The average and high end estimated daily intakes of different OCPs for the Chinese were both lower than the tolerable daily intake (TDI) suggested by authorities indicating low health risk of OCPs dietary exposure among Chinese adults at present. However, the risk of carcinogenicity of the OCPs should be concerned with if the carcinogenicity effects from the exposures to these OCPs were considered. |
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