title: [Levels and possible sources of organochlorine pesticides (OCPs) in camphor (Cinnamomum camphora) tree bark from Southern Jiangsu, China].
abstract: Thirty-three camphor tree bark samples were collected from Southern Jiangsu in August 2012. They were analyzed for organochlorine pesticides (OCPs), including hexachlorobenzene (HCB), DDTs (o,p'-DDE, p,p'-DDE, o,p'-DDD, p,p'-DDD, o,p'-DDT and p,p'-DDT), trans-chlordane and cis-chlordane. The concentrations of HCB, sigma6 DDTs and sigma Chlordanes ranged (dw) from 0.31 ng x g(-1) to 1.81 ng x g(-1), 0.40 ng x g(-1) to 17.3 ng x g(-1) and n. d. to 1.03 ng x g(-1), respectively. Due to the high volatility, the spatial distribution of HCB in Southern Jiangsu was uniform. Compared to the other results, the HCB concentration in Southern Jiangsu was lower. The historical usage of technical DDT mixture and the dicofol-type DDT were the major sources of DDTs in southern Jiangsu. The TC/CC ratio is usually used to distinguish between aged and fresh chlordane. According to the ratio of TC/CC, the chlordane in the urban area was derived from the fresh application of technical chlordane, and that in the rural area was attributed to the historical usage.
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
authors.forename: Xiu-Lan
authors.initials: XL
authors.lastname: Zhang
authors.forename: Wen-Long
authors.initials: WL
authors.lastname: Yang
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Li
authors.forename: Shuang-Xin
authors.initials: SX
authors.lastname: Shi
authors.forename: Li-Fei
authors.initials: LF
authors.lastname: Zhang
authors.forename: Liang
authors.initials: L
authors.lastname: Dong
authors.forename: Ye-Ru
authors.initials: YR
authors.lastname: Huang
mesh_terms: D002681:China; D027423:Cinnamomum camphora / Q000737:chemistry*; D003634:DDT / Q000032:analysis; D004784:Environmental Monitoring; D006581:Hexachlorobenzene / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D024301:Plant Bark / Q000737:chemistry*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D006581:Hexachlorobenzene; D003634:DDT