HS-GC/uECD测定水果中二硫代氨基甲酸类盐农药残留
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摘要
目的建立水果中二硫代氨基甲酸盐类(DCTs)农药残留分析的方法。方法二硫代氨基甲酸盐(酯,DCTs)类农药在密闭的容器中加热,经SnCl_2-HCl酸化分解成二硫化碳(CS2),用自动顶空装置直接进样,气相色谱uECD检测器测定CS2的含量,从而间接得到二硫代氨基甲酸盐类农药(DCTs)的含量。结果该方法的回收率为83.86%～90.33%,RSD为1.11%～2.58%,方法的检出限为0.02 mg/kg,均符合农药残留分析要求。结论该方法可广泛用于水果中DTCs农药残留的检测。
Objective To establish the method of detection for dithiocarbamates(DCTs) residues in fruits. Methods After heated in a closed containers and SnCl_2-HCl acidified, the dithiocarbamate(ester, DCTs) pesticides were decomposed into CS_2. The samples were injected into gas chromatogram uECD detector through automatic headspace device for CS_2 detection and the content of DCTs was indirectly obtained. Results The recovery rate of this method was from 83.86% to 90.33%,with the RSD from 1.11% to 2.58% and the detection limit of 0.02 mg/kg. All the results met the requirements of pesticides residue analysis. Conclusions This method can be widely used for detecting DTCs pesticides residue in fruits.
Objective To establish the method of detection for dithiocarbamates(DCTs) residues in fruits. Methods After heated in a closed containers and SnCl_2-HCl acidified, the dithiocarbamate(ester, DCTs) pesticides were decomposed into CS_2. The samples were injected into gas chromatogram uECD detector through automatic headspace device for CS_2 detection and the content of DCTs was indirectly obtained. Results The recovery rate of this method was from 83.86% to 90.33%,with the RSD from 1.11% to 2.58% and the detection limit of 0.02 mg/kg. All the results met the requirements of pesticides residue analysis. Conclusions This method can be widely used for detecting DTCs pesticides residue in fruits.
引文
[1]杨桂强,姚建仁,郑永权,等. EBDCs杀菌剂及代谢物ETU的毒理学研究进展[J].现代农药, 2005, 4(1):6-9.
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[7]田海,吴琼,张月,等. GC-μECD测定蔬菜粉中二硫代氨基甲酸盐(酯)类农药残留[J].现代农药, 2015, 14(1):32-34.
[8]王娟,尚立成,仇文轩,等.水果中二硫代氨基甲酸酯类农药残留情况调查[J].疾病预防控制通报, 2017, 32(4):77-79.
[9]陈鹭平,邹伟,吴敏,等.气相色谱法测定茶叶中的二硫代氨基甲酸酯总残留量[J].检验检疫科学, 2004, 14(s1):22-25.
[10]石利利,单正军,金怡,等.荔枝中代森锰锌及其代谢产物乙撑硫脲残留量的气相色谱测定[J].分析测试学报,2005, 24(2):92-94.
[11]谭头云,蔡磊明,王立冬,等.气相色谱法测定苹果、土壤中代森铵及其代谢物的残留量[J].农药, 2009, 48(8):592-597.
[12]中华人民共和国国家进出口商品检验局.出口水果中二硫代氨基甲酸酯残留量检验方法:SN0157-1992[S].北京:中国标准出版社, l993.
[13]中国标准化委员会.出口茶叶中二硫代氨基甲酸酯总残留量检验方法:SN/T 1541-2005[S].北京:中国标准出版社, 2005.
[2]马婧玮,潘灿平,张玲,等.二硫代氨基甲酸盐类(DTCs)杀菌剂残留分析方法综述[J].农药学学报, 2010, 12(1):22-30.
[3]孔祥吉,马山山,单正军,等.二硫代氨基甲酸盐类(EBDCs)杀菌剂残留检测及降解动态综述[J].农药科学大管理, 2013, 34(12):23-30.
[4]秦曙,乔雄梧,王霞,等.气相色谱法检测22种基质中的4种二硫代氨基甲酸盐类农药残留[J].色谱, 2010, 28(12):1162-1167.
[5]马恒麟,纪然,张永刚,等.西瓜、瓜叶及土壤中代森锰锌残留气相色谱分析方法的研究[J].农药学学报, 2000,2(2):63-70.
[6]曹爱华,徐光军,李义强,等.代森锰锌在烟草中的残留分析[J].烟草科技/烟草化学, 2005(7):24-26.
[7]田海,吴琼,张月,等. GC-μECD测定蔬菜粉中二硫代氨基甲酸盐(酯)类农药残留[J].现代农药, 2015, 14(1):32-34.
[8]王娟,尚立成,仇文轩,等.水果中二硫代氨基甲酸酯类农药残留情况调查[J].疾病预防控制通报, 2017, 32(4):77-79.
[9]陈鹭平,邹伟,吴敏,等.气相色谱法测定茶叶中的二硫代氨基甲酸酯总残留量[J].检验检疫科学, 2004, 14(s1):22-25.
[10]石利利,单正军,金怡,等.荔枝中代森锰锌及其代谢产物乙撑硫脲残留量的气相色谱测定[J].分析测试学报,2005, 24(2):92-94.
[11]谭头云,蔡磊明,王立冬,等.气相色谱法测定苹果、土壤中代森铵及其代谢物的残留量[J].农药, 2009, 48(8):592-597.
[12]中华人民共和国国家进出口商品检验局.出口水果中二硫代氨基甲酸酯残留量检验方法:SN0157-1992[S].北京:中国标准出版社, l993.
[13]中国标准化委员会.出口茶叶中二硫代氨基甲酸酯总残留量检验方法:SN/T 1541-2005[S].北京:中国标准出版社, 2005.