| 梁晓涵1，魏静1，汤祝华1，王海灵2.顶空气相法测定鲜食用菌中二硫代氨基甲酸盐类农残[J].海南师范大学学报自科版,2018,31(3):257-263 |
| 顶空气相法测定鲜食用菌中二硫代氨基甲酸盐类农残 |
| Determination of Dithiocarbamate Residues in Fresh Edible Mushroom by Headspace - Gas Chromatography |
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| DOI：10.12051/j.issn.1674-4942.2018.03.003 |
| 中文关键词: 顶空气相色谱法 二硫代氨基甲酸盐类 鲜食用菌 |
| 英文关键词: headspace - gas chromatography dithiocarbamate fresh edible mushroom |
| 基金项目: |
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| 中文摘要: |
| 建立鲜食用菌中二硫代氨基甲酸盐类农残的顶空气相色谱测定方法. 在加热的密闭容
器中，二硫代氨基甲酸盐类农药被氯化亚锡-硫酸溶液酸解生成二硫化碳，用顶空气相色谱法
（μECD 检测器）进行检测，二硫代氨基甲酸盐类农残以二硫化碳表示。结果表明,采用该方法对香
菇基质中代森锰锌、丙森锌和福美双进行方法确证，3 种农药在浓度范围为0.02～3.0 μg/mL 时线
性关系均良好（γ＞0.999），检出限为0.034～0.065 mg/kg，添加水平在0.50～5.0 mg/kg 时，回收率均
值为82.6%～97.6%，精密度为1.46 %～3.41%。该方法简单高效、准确可靠，适用于基层实验室对
鲜食用菌中二硫代氨基甲酸盐类农残的检测。 |
| 英文摘要: |
| This study was conducted to develop a headspace gas chromatography method for determining the dithiocarba⁃
mate residues in fresh edible mushroom. In a heated sealed container, dithiocarbamate residues were decomposed into car⁃
bon disulfide by SnCl 2 -H 2 SO 4 solution.Headspace - gas chromatography was applied to detect the dithiocarbamate residues
using an electron capture detector(μECD) , and the dithiocarbamate residues were expressed as carbon disulfide. The re⁃
sults showed that three dithiocarbamate residues including mancozeb, propineb and thiram in fresh mushroom detected by
headspace - gas chromatography method had good linear relations in the range of 0.02~3.0 μg/mL(γ >0.999) . The detec⁃
tion limits were found in the range of 0.034~0.065 mg/kg. The average recovery rates were in the range of 82.6~97.6%
and the precisions were in the range of 1.46~3.41%, when the additive residue concentrations were in the range of 0.50~
5.0 mg/kg. The method was simple, efficient, accurate and reliable, and could be suitable for the determination of dithiocar⁃
bamate residues in fresh edible mushroom in local laboratory. |
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