title: Distribution and accumulation of hexachlorobutadiene in soils and terrestrial organisms from an agricultural area, East China.
abstract: Hexachlorobutadiene (HCBD) is a potential persistent organic pollutant that has been found in abiotic environments and organisms. However, information on HCBD in soils and its accumulation in terrestrial food chains is scarce. This study investigated the accumulation of HCBD in soils, plants, and terrestrial fauna in a typical agricultural area in Eastern China, and drew comparisons with organochlorine pesticides (OCPs). The HCBD concentrations in soils were <0.02-3.1ng/g dry weight, which were similar to α-endosulfan concentrations but much lower than the concentrations of some other OCPs. The HCBD soil-plant accumulation factors, 8.5-38.1, were similar to those of o,p'-DDT and higher than those of HCHs and p,p'-DDT, indicating that HCBD is strongly bioaccumulated by rice and vegetables. HCBD concentrations of 1.3-8.2ng/g lipid weight were found in herbivorous insects, earthworms, and Chinese toads. The biomagnification factor, the ratio between the lipid-normalized concentrations in the predator and the prey, was found to be 0.16-0.64 for different food chains of Chinese toads, so HCBD was found not to biomagnify, which is in contrast with OCPs. Further research into whether HCBD is biomagnified in high trophic level organisms or through the entire terrestrial food web is required.
authors.affiliation: MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China. Electronic address: zwtang@ncepu.edu.cn.
authors.forename: Zhenwu
authors.initials: Z
authors.lastname: Tang
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: huangqf@craes.org.cn.
authors.forename: Qifei
authors.initials: Q
authors.lastname: Huang
authors.affiliation: National Institute for Nutrition and Food Safety, Chinese CDC, Beijing 100021, China. Electronic address: jlcheng77@163.com.
authors.forename: Jiali
authors.initials: J
authors.lastname: Cheng
authors.affiliation: MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China. Electronic address: qudan527@sina.com.
authors.forename: Dan
authors.initials: D
authors.lastname: Qu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: cqyyf@163.com.
authors.forename: Yufei
authors.initials: Y
authors.lastname: Yang
authors.affiliation: MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China. Electronic address: gwfybj@gmail.com.
authors.forename: Wei
authors.initials: W
authors.lastname: Guo
mesh_terms: D000383:Agriculture; D002070:Butadienes / Q000032:analysis* / Q000378:metabolism; D002681:China; D018556:Crops, Agricultural / Q000737:chemistry*; D004726:Endosulfan; D004784:Environmental Monitoring; D020387:Food Chain; D015386:Hazardous Substances; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D002070:Butadienes; D015386:Hazardous Substances; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; C001335:hexachlorobutadiene; D004726:Endosulfan
keywords: Biomagnification; Hexachlorobutadiene (HCBD); Plant accumulation; Soils; Terrestrial organisms