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甲醇等5种强极性有机物污染事故中的监测分析方法
Analysis Methods for Detecting Strong Polar Organics in Sudden Water Pollution Accidents such as Methonal
投稿时间:2016-11-28  修订日期:2018-04-10
DOI:10.19316/j.issn.1002-6002.2018.04.15
中文关键词:  顶空  气相色谱质谱法  气相色谱法  突发性水污染事故  强极性挥发性有机物
英文关键词:headspace  GC-MS  GC-ECD  sudden water pollution accidents  strong polar volatile organic compounds
基金项目:
作者单位
魏子勇 山东省环境监测中心站, 山东 济南 250101 
段修宇 山东省淮河流域水利管理局规划设计院, 山东 济南 250101 
曹方方* 山东省环境监测中心站, 山东 济南 250101 
王述伟 山东省环境监测中心站, 山东 济南 250101 
通讯作者:曹方方*  山东省环境监测中心站, 山东 济南 250101  
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中文摘要:
      建立了在突发性水污染事故中定量分析水样中甲醇、丙酮、乙腈、N,N-二甲基甲酰胺和N,N-二甲基乙酰胺等5种极性有机物的实验室和现场应急监测分析方法。采用顶空-车载气相色谱质谱法用于现场快速定性定量分析;顶空-气相色谱法用于实验室准确定量分析。通过优化顶空及气相参数,在最佳实验条件下测得顶空-气相色谱质谱法中甲醇、丙酮、乙腈、N,N-二甲基甲酰胺、N,N-二甲基乙酰胺等5种化合物的检出限分别为1.0、0.06、0.5、10.0、15.0 mg/L,平行测定7次结果的相对标准偏差分别为2.1%~3.8%,加标回收率为69.4%~104%;顶空-气相色谱法灵敏度高于气相色谱质谱法,检出限分别为0.08、0.01、0.03、1.7、1.7 mg/L,平行测定7次结果的相对标准偏差分别为2.5%~4.1%,加标回收率为78.1%~116%。
英文摘要:
      A simple method was developed to rapidly quantitative and qualitative analyse methonal,acetone, acetonitrile,N,N-dimethyl formamide and N,N-dimethyl-Acetamide in sudden water pollution accidents. A headspace-vehicular GC-MS method was adopted to rapidly detect five strong polar volatile organic compounds at water pollution accidents site; a headspace-GC-ECD method was used in laboratory analysis. Under optimum conditions, the detect limitation of GC-MSD method of methonal,acetone, acetonitrile,N,N-dimethyl formamide and N,N-dimethyl-Acetamide were 1.0, 0.06, 0.5, 10.0 and 15.0 mg/L respectively, and the relative standard deviation were between 2.1%-3.8% (n=7) reapectively; the spiked recovery of these five compounds were between 69.4%-104%; the detect limitation of GC-ECD method of methonal,aceton, acetonitrile,N,N-dimethyl formamide and N,N-dimethyl-Acetamide were 0.08, 0.01, 0.03, 1.7 and 1.7 mg/L respectively, and the relative standard deviation were between 2.5%-4.1% (n=7) reapectively; the spiked recovery of these five compounds were between 78.1%-116%.
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