气相色谱-质谱测定蔬菜与水果中代森锰锌残留量 |
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引用本文: | 王亚恩,王建华,刘润珠,刘永明. 气相色谱-质谱测定蔬菜与水果中代森锰锌残留量[J]. 安徽农业科学, 2012, 0(31): 15252-15255 |
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作者姓名: | 王亚恩 王建华 刘润珠 刘永明 |
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作者单位: | 山东出入境检验检疫局,山东青岛,266002;秦皇岛出入境检验检疫局,河北秦皇岛,066002 |
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基金项目: | 质检公益行业科研专项(2012100920-2) |
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摘 要: | [目的]建立一种气相色谱-质谱快速测定蔬菜和水果中代森锰锌残留量的方法.[方法]代森锰锌在密闭容器中加热条件下被氯化锡-盐酸溶液酸解生成二硫化碳,二硫化碳经异辛烷收集后用气相色谱-电子捕获检测器和气相色谱-质谱联用(GC-MS)检测,并通过测定蔬菜和水果4种不同基质中残留的代森锰锌对该方法进行了验证.[结果]代森锰锌在0.1 ~ 2.5 mg/kg添加水平下呈良好的线性关系;代森锰锌在蔬菜和水果4种不同基质中的回收率为74.80% ~ 110.90%,相对标准偏差为3.65% ~ 19.19%.[结论]该方法简单、快速、准确,适用于蔬菜和水果中代森锰锌残留检测分析.
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关 键 词: | 代森锰锌 残留 气相色谱 气相色谱-质谱 蔬菜 水果 |
Determination of Mancozeb Residue in Vegetables and Fruits by GC-MS |
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Affiliation: | WANG Ya-en et al(Shandong Exit & Entry Inspection and Quarantine Bureau,Qingdao,Shandong 266002) |
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Abstract: | [Objective] The aim was to establish a determination method of mancozeb residue in vegetables and fruits by GC-MS.[Method] Mancozeb was extracted and hydrolyzed to carbon disulfide(CS2) by heating and acidic condition in a closed-vessel.After the evolved CS2 was trapped in 2,2,4-trimethylpentane,it was determined by GC-ECD and GC-MS analysis.The mancozeb residue analysis method was validated in different matrices of vegetables and fruits.[Result] The calibration curve for mancozeb had a good linearity in the range of 0.1-5.0 mg/kg.The recoveries of mancozeb in four different matrices of vegetables and fruits ranged from 74.80% to 110.90%,and the relative standard deviations ranged from 3.65% to 19.19%.[Conclusion] The method is simple,fast and accurate,so it is suitable for the detection of mancozeb residues in vegetables and fruits. |
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Keywords: | Mancozeb Residue GC GC-MS Vegetables Fruits |
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