| 松嫩平原西部农田径流中有机氯农药的分布特征 |
| 摘要点击 1225 全文点击 1343 投稿时间：2002-05-29 修订日期：2002-10-08 |
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| 中文关键词 农田径流 BHC DDT 松嫩平原西部 |
| 英文关键词 agricultural runoff hexachlorocyclohexane(BHC) dichlorodiphenyltrichloroethane(DDT) the Western Songnen Plain |
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| 中文摘要 |
| 松嫩平原西部水田回归水、旱田地表径流中BHC、DDT主要异构体或代谢物的可溶态、颗粒吸附态的分析表明,回归水中BHC、DDT的含量均较低,BHC以β-BHC为主,占73.5%～99.5%,呈β＞α＞γ＞δ规律;DDT中仅检出p,p'-DDT.BHC(β-BHC除外)、DDT以溶解态为主,悬浮颗粒物的粒径大小是影响回归水中农药含量的重要因素;悬浮物中DDT的生态风险很低,而BHC有潜在的生态风险. |
| 英文摘要 |
| Through analyzing the contents of metabolites of BHC and derivatives of DDT in the runoff from paddy and corn land in the Western Songnen Plain, it was found that the contents of BHC and DDT were very lower and β BHC, which accounted for 73.5%～99.5% of the contents of BHC, was the main metabolite of BHC in the runoff. Among the derivatives of DDT, only p,p DDT was detected out. Moreover, dissolved form was the dominant species of metabolites and derivatives, but the particles size was one of the important factors which affect on the contents of BHC and DDT in runoff. The ecological risk of DDT in suspended substance of runoff from farmland was lower and BHC had potential risk in the region. |
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