期刊论文

中文

农药学学报

1008-7303

2008

10

4

487-490

农业部农药残留基金项目（NCR06076）；

本校为第一机构

采用气相色谱(GC-NPD)测定了马拉硫磷在柑桔及土壤中的消解动态和最终残留。样品用丙酮提取,经液液萃取净化,气相色谱氮磷检测器检测,外标法定量。结果表明:马拉硫磷在桔皮、桔肉、柑桔全果(果皮、果肉)和土壤中的添加回收率在0.05～1mg/kg水平时分别为90.1%～97.1%、85.0%～89.0%、85.3%～90.5%和85.8%～90.0%;相对标准偏差分别为2.06%～6.79%、4.00%～7.57%、2.47%～4.74和4.94%～7.06%。马拉硫磷的最小检出量为1.79×10~(-11)g,在土壤和柑桔全果中的最低检出浓度分别为0.013和0.009mg/kg。马拉硫磷在柑桔全果和土壤中的半衰期分别为7.86～12.16d和1.0～2.0d;施药浓度为推荐剂量,最多3次,最后...

Gas chromatography equipped with a nitrogen-phosphorus detector （GC-NPD） was used in the field residue decline study and final residues of malathion in citrus and soil. Samples were extracted with acetone and the extracts were cleaned up by liquid-liquid extraction, followed by determination using GC. The recovery was from 90.1% to 97.1% for the citrus＇ pericarp, 85.0% - 89.0% for pulp, 85.3%- 90. 5 for the citrus and 85.8% - 90.0% for soil with coefficients of variation of 2.06% - 6.79% ,4.00%-7.57% ,2.47% - 4.74 and 4.94% - 7.06% respectiv...