| 热脱附-气相色谱-质谱法测定环境空气中5种挥发性卤代烃 |
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| 引用本文： | 李亮.热脱附-气相色谱-质谱法测定环境空气中5种挥发性卤代烃[J].环境科学与管理,2013,38(6):158-161. |
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| 作者姓名： | 李亮 |
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| 作者单位： | 内蒙古自治区环境监测中心站,内蒙古呼和浩特,010011 |
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| 摘 要： | 建立热脱附-气相色谱-质谱联用测定环境空气中三氯甲烷、四氯化碳、三氯乙烯、四氯乙烯、溴仿等5种挥发性卤代烃的分析方法。该方法在一定浓度范围内工作曲线线性良好，相关系数均在0．9990～0．9998之间，加标回收率在94．0％～106．6％之间，RSD为2．18％-7．62％，检出限为0．22μg／m3～0．30μg／m3。该方法具有操作简单、分析快速、准确度高、灵敏高的特点，用热脱附-气相色谱-质谱联用测定环境空气中5种挥发性卤代烃，结果令人满意。
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| 关 键 词： | 热脱附 气相色谱-质谱 挥发性卤代烃 环境空气 |
Determination of Five Kinds of Volatile Halogenated Hydrocarbons in Environmental Air by ATD-GC-MS Method |
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| Li Liang.Determination of Five Kinds of Volatile Halogenated Hydrocarbons in Environmental Air by ATD-GC-MS Method[J].Environmental Science and Management,2013,38(6):158-161. |
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| Authors: | Li Liang |
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| Institution: | Li Liang (Inner Mongolia Environmental Monitoring Center Station, Hohhot 010011, China) |
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| Abstract: | This study established a method to determine 5 kinds of volatile halogenated hydrocarbons including trichlorometh- ane, carbon tetrachloride, trichloroethylene, tetrachloroethylene, bromoform in environmental air by combining automated thermal desorption, gas chromatography and mass spectrometry methods（ ATD -GC -MS）. The curves of the method have a good lineari- ty in a certain range of concentration with correlation coefficient of 0. 999 0 - 0. 999 8. The recovery ratios were 94. 0% - 106. 6% and the RSD was 2. 18% - 7.62%. Using the method, the range of the lowest detection limits for 5 kinds of volatile halogenated hydrocarbons was O. 22μg/m3 -O. 30 μg/m3. The method has the characteristics of simple operation, rapid analy- sis, high accuracy and sensitivity. Satisfactory results were obtained. |
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| Keywords: | automated thermal desorption gas chromatography -mass spectrometry volatile halogenated hydrocarbons environmental air |
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