title: Modeling redistribution of α-HCH in Chinese soil induced by environment factors.
abstract: This study explores long-term environmental fate of α-HCH in China from 1952 to 2007 using ChnGPERM (Chinese Gridded Pesticide Emission and Residue Model). The model captures well the temporal and spatial variations of α-HCH concentration in Chinese soils by comparing with a number of measured data across China in different periods. The results demonstrate α-HCH grasshopping effect in Eastern China and reveal several important features of the chemical in Northeast and Southeast China. It is found that Northeast China is a prominent sink region of α-HCH emitted from Chinese sources and α-HCH contamination in Southwest China is largely attributed to foreign sources. Southeast China is shown to be a major source contributing to α-HCH contamination in Northeast China, incurred by several environmental factors including temperature, soil organic carbon content, wind field and precipitation.
authors.affiliation: Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003 Shangdong, China.
authors.forename: Chongguo
authors.initials: C
authors.lastname: Tian
authors.forename: Liyan
authors.initials: L
authors.lastname: Liu
authors.forename: Jianmin
authors.initials: J
authors.lastname: Ma
authors.forename: Jianhui
authors.initials: J
authors.lastname: Tang
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Li
mesh_terms: D002244:Carbon / Q000032:analysis; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D004787:Environmental Pollution / Q000706:statistics & numerical data*; D001556:Hexachlorocyclohexane / Q000032:analysis*; D007700:Kinetics; D008956:Models, Chemical; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D013696:Temperature; D014887:Weather
chemical_list: D012987:Soil; D012989:Soil Pollutants; C040534:alpha-hexachlorocyclohexane; D001556:Hexachlorocyclohexane; D002244:Carbon