METHYL PARATHION PERSISTENCE IN SOIL FOLLOWING SIMULATED SPILLAGE
METHYL PARATHION PERSISTENCE IN SOIL FOLLOWING SIMULATED SPILLAGE
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DOI：
10.1007/bf01055441
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发表时间：
1981-01-01
影响因子：
4
通讯作者：
DAVIS, JE
中科院分区：
文献类型：
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作者：
BUTLER, LC;STAIFF, DC;DAVIS, JE
模拟喷洒乳油(E.C.)并对甲基对硫磷土壤微胶囊化制剂进行了研究。以浓缩液和模拟滚筒漂洗的形式对两种配方的残留进行了长达45个月的跟踪观察。胶囊化制剂的溢出导致土壤表面形成一种类似蛋糕的固体沉积物，这可能对儿童特别有吸引力。在45个月时，土壤残留量减少了%，对于微胶囊化蛋糕下面的土壤，减少了68%。蛋糕本身的残留物只减少了31%。模拟滚筒冲洗产生的土壤残留量在乳油45个月和微囊化材料1年后基本上是无害的。研究了微胶囊化滤饼中甲基对硫磷在土壤中的淋溶作用，以及有效残留量与潮湿天气的关系。
Simulated spillage of emulsifiable concentrate (E.C.) and microencapsulated formulations of methyl parathion on soil were studied. Persistence of residues from both formulations spilled as concentrates and as simulated drum rinses were followed for up to 45 months. Spillage of encapsulated formulation resulted in the formulation of a solid cake-like deposit on the soil surface, which could be a particularly attractive hazard to small children. At 45 months, soil residues had decreased by 64% for emulsifiable concentrate spills, and 68% for the soil beneath the microencapsulated cake. Residue in the cake itself only decreased by 31%. Soil residue levels from simulated drum rinses were essentially innocuous by 45 months for the emulsifiable concentrate and by one year for the microencapsulated material. The leaching of methyl parathion from the microencapsulated cake into soil and the relationship between available residue and wet weather were also investigated.