目的建立溶液吸收-气相色谱质谱检测法测定天麻中二硫代氨基甲酸酯(盐)类农药残留量的方法。方法目标物在加热条件下经溶液吸收,转化为二硫化碳,经正己烷萃取,采用气相色谱质谱法间接测定二硫代氨基甲酸酯(盐)类农药含量。对云南省16州...目的建立溶液吸收-气相色谱质谱检测法测定天麻中二硫代氨基甲酸酯(盐)类农药残留量的方法。方法目标物在加热条件下经溶液吸收,转化为二硫化碳,经正己烷萃取,采用气相色谱质谱法间接测定二硫代氨基甲酸酯(盐)类农药含量。对云南省16州市采集的55件天麻中的二硫代氨基甲酸酯(盐)类农药的残留量进行统计分析。结果该方法的线性范围为〇.02~10tng/kg,相关系数0.9996,定量限0.010mg/kg,空白基质加标回收率90.5%~丨05.0%,相对标准偏差(relative standard deviation,RSD)为4.77%(«=6)。55件天麻样品检出率23.6%,平均值0.021 mg/kg,含量范围为ND〜0.275 mg/kg。结论该方法简便、快速、灵敏,适合天麻中二硫代氨基甲酸酯(盐)类农药的测定。采集的天麻样品中二硫代氨基甲酸酯(盐)类农残含量水平总体较低。展开更多
Thirteen title compounds Ph 3GeS 2CNR 2(1—13) were synthesized by the reaction of \{corre\|\}sponding triphenylgermanium chloride with dithiocarbamates. Their structures were confirmed by elemen\|tal analysis, IR, 1H...Thirteen title compounds Ph 3GeS 2CNR 2(1—13) were synthesized by the reaction of \{corre\|\}sponding triphenylgermanium chloride with dithiocarbamates. Their structures were confirmed by elemen\|tal analysis, IR, 1H NMR, UV and MS. Some of these compounds showed antitumor activities in vitro.展开更多
文摘目的建立溶液吸收-气相色谱质谱检测法测定天麻中二硫代氨基甲酸酯(盐)类农药残留量的方法。方法目标物在加热条件下经溶液吸收,转化为二硫化碳,经正己烷萃取,采用气相色谱质谱法间接测定二硫代氨基甲酸酯(盐)类农药含量。对云南省16州市采集的55件天麻中的二硫代氨基甲酸酯(盐)类农药的残留量进行统计分析。结果该方法的线性范围为〇.02~10tng/kg,相关系数0.9996,定量限0.010mg/kg,空白基质加标回收率90.5%~丨05.0%,相对标准偏差(relative standard deviation,RSD)为4.77%(«=6)。55件天麻样品检出率23.6%,平均值0.021 mg/kg,含量范围为ND〜0.275 mg/kg。结论该方法简便、快速、灵敏,适合天麻中二硫代氨基甲酸酯(盐)类农药的测定。采集的天麻样品中二硫代氨基甲酸酯(盐)类农残含量水平总体较低。
文摘Thirteen title compounds Ph 3GeS 2CNR 2(1—13) were synthesized by the reaction of \{corre\|\}sponding triphenylgermanium chloride with dithiocarbamates. Their structures were confirmed by elemen\|tal analysis, IR, 1H NMR, UV and MS. Some of these compounds showed antitumor activities in vitro.
