title: Temporal trends in daily dietary intakes of DDTs and HCHs in urban populations from Beijing and Shenyang, China.
abstract: The temporal trends in daily dietary exposure of the populations in Beijing and Shenyang, China to DDTs and HCHs through consumption of various food categories and the associated health risks were investigated in this work. The estimated dietary intakes of DDTs and HCHs in 2005/2007 were almost one and two orders of magnitude lower than those in 1992 and in the 1970s, respectively, revealing the historical decrease of DDT and HCH in Chinese foods after their applications were banned. The relative contributions of different foodstuffs to the overall intakes of DDTs and HCHs in the 1970s and in 1992 were very different from those in 2005/2007, mainly due to the remarkable concentration variance in foodstuffs and changes in diet habit of population. According to the hazard guidelines, it is concluded that intakes of these two pesticides in 2005/2007 may not exert adverse effects on human health.
authors: Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China.
authors: Yanxin
authors: Y
authors: Yu
authors: Bin
authors: B
authors: Wang
authors: Xilong
authors: X
authors: Wang
authors: Wenxin
authors: W
authors: Liu
authors: Jun
authors: J
authors: Cao
authors: Minghong
authors: M
authors: Wong
authors: Shu
authors: S
authors: Tao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002681:China; D002947:Cities; D003198:Computer Simulation; D003634:DDT / Q000032:analysis* / Q000592:standards; D004034:Diet Surveys; D005506:Food Contamination / Q000032:analysis* / Q000706:statistics & numerical data*; D001556:Hexachlorocyclohexane / Q000032:analysis* / Q000592:standards; D006801:Humans; D007223:Infant; D008875:Middle Aged; D009010:Monte Carlo Method; D010573:Pesticide Residues / Q000032:analysis* / Q000592:standards; D018570:Risk Assessment; D014505:Urban Population; D055815:Young Adult
chemical_list: D010573:Pesticide Residues; D001556:Hexachlorocyclohexane; D003634:DDT