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.
journal_name
Environ Intjournal_title
Environment internationalauthors
Zhou P,Zhao Y,Li J,Wu G,Zhang L,Liu Q,Fan S,Yang X,Li X,Wu Ydoi
10.1016/j.envint.2011.05.018subject
Has Abstractpub_date
2012-07-01 00:00:00pages
152-9eissn
0160-4120issn
1873-6750pii
S0160-4120(11)00163-2journal_volume
42pub_type
杂志文章abstract::Recent studies show that, even after being banned for agricultural applications for over 30 years, organochlorine pesticides (OCPs), including hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDXs), can still be found in various biological matrices and pose a potential hazar...
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