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首页> 外文期刊>International journal of environmental analytical chemistry >The impact of nitrogen fertilizers on degradation and leaching of chlorotoluron in soil
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The impact of nitrogen fertilizers on degradation and leaching of chlorotoluron in soil

机译：氮肥对土壤中氯甲苯降解和淋溶的影响

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摘要

The effect of ammonium sulphate and urea on the degradation and leaching of chlorotoluron in soil was studied under laboratory conditions. The degradation rate of chlorotoluron increased with increasing soil depth. Adsorbed chlorotoluron desorbed readily from subsurface soil because the content of clay and soil organic matter was lower in subsurface soil than in topsoil. After ammonium sulphate and urea were applied to the soil, the degradation of chlorotoluron became slower than that in the untreated soils with fertilizers. Moreover, the degradation of chlorotoluron was faster for all the depths examined with soils amended with urea than for all the depths examined with soils amended with ammonium sulphate. Chlorotoluron was mobile in soils when using non-aged and aged soil columns in different treatments, with mobility increasing in the order ammonium sulphate treatments < urea treatments < control. The results indicated that ammonium sulphate and urea reduced chlorotoluron leaching losses. On the other hand, more chlorotoluron remained in the aged soil columns than in non-aged soil columns, indicating that the mobility of chlorotoluron decreased in aged treated soils.
机译：在实验室条件下研究了硫酸铵和尿素对土壤中氯甲苯的降解和浸出的影响。氯甲苯的降解率随土壤深度的增加而增加。吸附的氯甲苯易于从表层土壤中解吸，因为表层土壤中粘土和土壤有机质的含量低于表土。在将硫酸铵和尿素施用于土壤后，氯甲苯隆的降解速度要比未使用化肥处理的土壤慢。而且，在用尿素改良的土壤中检验的所有深度的氯甲苯隆的降解都比在用硫酸铵改良的土壤中检验的所有深度的氯甲苯的降解更快。当在不同处理中使用未老化和老化的土壤柱时，氯脲在土壤中是可移动的，其流动性按硫酸铵处理<尿素处理<对照的顺序增加。结果表明，硫酸铵和尿素减少了氯甲苯的浸出损失。另一方面，老化土壤柱中残留的氯代甲苯比未老化土壤柱中的多，这表明老化处理过的土壤中氯甲苯的迁移率下降。

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