Assessment, Composition and Possible Source of Organochlorine Pesticides in Surface Soils from rmqi, China

作     者：CHEN Min CHEN Li HUANG Ping 

作者机构：School of Environmental Science and Engineering of Sun Yat-Sen University Cnhomeland and Environmental Co.Ltd. Institute of Plant Protection and Environmental ProtectionBeijing Academy of Agricultural and Forestry Science 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2015年第25卷第6期

页      面：888-900页

核心收录：

学科分类：090403[农学-农药学(可授农学、理学学位）] 09[农学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0904[农学-植物保护] 0901[农学-作物学] 

基　　金：supported by the National Natural Science Foundation of China (No. 41101482) the Natural Science Foundation of Beijing, China (No. 8122021) 

主　　题：有机氯农药残留量 土壤样品 中国 评估 环境质量标准 浓度范围 组成 交通道路 

摘      要：Twenty-eight surface soil samples from 5 functional zones(park, traffic roadside, business/residential area, rural area, and industrial area) of¨Ur¨umqi, China were collected and analyzed for the concentrations of 14 organochlorine pesticides(OCPs), such as 3 isomers of hexachlorocyclohexane(HCHs)(α-HCH, β-HCH, and γ-HCH), 4 dichlorodiphenyltrichloroethanes(DDTs)(p, p′-DDT and its metabolites p, p′-DDD(1,1-dichloro-2,2-bis(p-chlorophenyl)ethane) and p, p′-DDE(1,1-dichloro-2,2-bis(4-chorophenyl)ethylene), and o, p′-DDT), and methoxychlor, aiming to survey the residue levels and compositions of these 14 OCPs, to identify possible sources of the OCPs, and to assess their potential risks to human health and the environment in surface soils of¨Ur¨umqi. The concentrations ranged from non-detected to 30.86 μg kg-1for HCHs(sum of α-, β-, and γ-HCH), from non-detected to 40.03 μg kg-1for DDTs(sum of p, p′-DDT, p, p′-DDD, p, p′-DDE, and o, p′-DDT), and from non-detected to 11.95 μg kg-1for methoxychlor. The total concentrations of the OCPs ranged from 16.40 to 84.86 μg kg-1, with a mean of 41.89 ± 16.25 μg kg-1. According to the measured concentrations and occurrence rates of the 14 OCPs, DDTs, HCHs, and methoxychlor were the most dominant compounds. Among the 5 functional zones, the total concentration of OCPs was in the order of rural area traffic roadside park business/residential area industrial area. The different compositions of DDTs and HCHs indicated that the residues of these compounds in most soil samples originated from historical application, besides slight recent introduction at some sampling sites. The results of Pearson correlation analysis showed that soil total organic carbon played an important role in the residue levels of HCHs, but such relationships were not found with DDTs or other OCPs. The soil quality of¨Ur¨umqi was classified as Class I based on the guidelines of the Chinese Environmental Quality Standard for Soil(GB15618-1995), indicating that the residue levels of OCPs have little risks to the environment and human health in the study area.