| 生活饮用水中有机氯农药残留的气相色谱串联质谱测定法 |
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| 引用本文： | 宁文吉,徐迎春,王颖,韩文清,张桂芳,董桂贤. 生活饮用水中有机氯农药残留的气相色谱串联质谱测定法[J]. 环境与健康杂志, 2010, 27(1): 73-74 |
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| 作者姓名： | 宁文吉 徐迎春 王颖 韩文清 张桂芳 董桂贤 |
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| 作者单位： | 烟台市疾病预防控制中心检验科,山东,烟台264003;烟台市疾病预防控制中心检验科,山东,烟台264003;烟台市疾病预防控制中心检验科,山东,烟台264003;烟台市疾病预防控制中心检验科,山东,烟台264003;烟台市疾病预防控制中心检验科,山东,烟台264003;烟台市疾病预防控制中心检验科,山东,烟台264003 |
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| 摘 要： | 目的建立毛细管气相色谱-三重串联四极杆质谱测定生活饮用水中痕量有机氯农药残留的方法。方法进样口温度为250℃;进样体积为1μl,不分流进样。EI源温度为300℃,电离能量为70eV。溶剂延迟时间为3.75min,传输线温度为280℃。在多重反应监测的扫描模式下,特征离子分别为181、235、246(m/z)的母离子和145、165、176(m/z)的子离子。结果在0.01～50μg/L线性范围内,所得各农药回归方程的线性关系均较好,r≥0.99,定量下限≤0.01μg/L。该方法的平均回收率为86.1%～101.8%,RSD为4.41%～8.07%。结论气相色谱-三重串联四极杆质谱法具有准确定性、精确定量的优点,适用于生活饮用水中痕量有机氯农药残留的检测。
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| 关 键 词： | 有机氯农药 色谱法 气相 多重质谱 多重反应监测 饮用水 |
Detemination of Organochlorine Pesticides in Drinking Water by Gas Chromatography-Mass Spectra-Mass Spectra |
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| Abstract: | Objective To develop a method for the determination to organochlorine peatieides by gas chromatography-mass speetra-mass spectra. Methods The temperature of inlet was 250 ℃,the injection volume was 1 μl, without split injection. The temperature of EI source was 300 ℃ ,the ionization energy was 70 eV,solvent delay time was 3.75 min,transfer line temperature was 280 ℃. 181,235,246(m/z)were selected as parent ion, and 145,165,176(m/z) were sub ion. Results In the range of 0-50 μg/L,every component had a good linearity,r ≥0.99,the limit of detection ≤0.01 μg/L Its average rate of recovery was in the range of 86.1%-101.8%,and the relative standard deviations (RSDs) were between 4.41%-8.07%. Conclusion Gas chromatography-mass spectra-mass spectra is more precise for the qualitative and quantitative determination of trace organochlorine pesticides residues in drinking water. |
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| Keywords: | Organic chlorinated pesticides Chromatography,gas Series mass spectra Multiple reaction monitoring Drinking water |
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