Assessment of Pesticide Residues in Two Arable Soils from the Semi-Arid and Subtropical Regions of China
Assessment of Pesticide Residues in Two Arable Soils from the Semi-Arid and Subtropical Regions of China
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DOI：
10.1007/s10661-005-0311-y
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发表时间：
2005-10
影响因子：
3
通讯作者：
Li-gang Wang;Zhenhua Zhao;Xin Jiang;Jinshui Wu;D. Martens
中科院分区：
文献类型：
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作者：
Li-gang Wang;Zhenhua Zhao;Xin Jiang;Jinshui Wu;D. Martens
研究了31种氯代烃（CHCs）、25种氯代酚（CPs）、30种有机磷（OP）和拟除虫菊酯（PRT）在中国半干旱和亚热带地区两种耕地土壤中的残留。结果表明，半干旱区土壤中CHC农药残留的主要成分为4，4 ′-DDE（25.3 ng/g）和β-HCH（14.1 ng/g），两者合计约占CHC总残留量的90%。在亚热带土壤中检测到的CHC残留物总含量仅为3.1纳克/克，其中约50%为β-六氯环己烷。但两种土壤中CP残留总量均在11 ng/g左右。在半干旱土壤中，只有甲基对硫磷的30种化合物的OP和PRT残留检测（32.5纳克/克），而马拉硫磷和甲基对硫磷（8.7和17.7纳克/克，分别）在亚热带土壤中检测到。结果表明，半干旱区土壤中农药残留的环境风险为CHCs（主要为4，4 ′-DDE、β-HCH）> OP（甲基对硫磷）> CPs，亚热带区土壤中农药残留的环境风险为OPs（甲基对硫磷和马拉硫磷）> CPs > CHCs（β-HCH）。
The residues of 31 chlorinated hydrocarbons (CHCs), 25 chlorophenols (CPs), 30 organophosphorus (OP) and pyrethroid (PRT) in two arable soils from the semi-arid and subtropical regions of China were assessed. Data obtained indicate that the main compounds of CHC pesticide residues in the semi-arid soil were 4,4′-DDE (25.3 ng/g) and β-HCH (14.1 ng/g), which totally accounted to about 90% of total CHC residues detected. The total content of CHC residues detected in the subtropical soil was only 3.1 ng/g, of which approximately 50% was β-HCH. However, the total content of CP residues in both of the soils was about 11 ng/g. In the semi-arid soil, only parathion-methyl amongst the 30 compounds of OP and PRT residues was detected (32.5 ng/g), whilst malathion and parathion-methyl (8.7 and 17.7 ng/g, respectively) detected in the subtropical soil. Based on these results, it was suggested the environmental risk of pesticide residues ranked in an order as CHCs (mainly as 4,4′-DDE, β-HCH) > OP (parathion-methyl) > CPs for the semi-arid soil, and as OPs (parathion-methyl and malathion) > CPs > CHCs (β-HCH) for the subtropical soil.