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用液相色谱——紫外检测法和气相色谱——电子捕获检测法分析土壤中超高效除草剂——甲磺隆钠盐的残留量。土壤样品用乙腈提取,提取液用经活化的PT—Si净化柱净化。两种方法回收率分别达到96.9％和97.0％。
The residues of the super-efficient herbicide-metsulfuron-methyl sodium in soils were analyzed by liquid chromatography-ultraviolet detection and gas chromatography-electron capture detection. Soil samples were extracted with acetonitrile and the extract was purified with an activated PT-Si column. The recoveries of the two methods reached 96.9% and 97.0% respectively.