| Tenax TA吸附/二次热解吸/毛细管气相色谱法测定环境空气中苯系物的方法 |
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| 引用本文： | 徐东群,刘晨明,张爱军,董小艳,韩克勤,王桂芳,唐志刚.Tenax TA吸附/二次热解吸/毛细管气相色谱法测定环境空气中苯系物的方法[J].卫生研究,2004,33(4):425-427. |
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| 作者姓名： | 徐东群 刘晨明 张爱军 董小艳 韩克勤 王桂芳 唐志刚 |
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| 作者单位： | 中国疾病预防控制中心环境与健康相关产品安全所,北京,100021 |
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| 基金项目： | 科技部公益基金重点课题 (No .2 0 0 1DA1 0 0 0 1 )，科技部“十五”攻关重点课题 (No.2 0 0 1BA70 4B0 1 )资助 |
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| 摘 要： | 目的 建立环境空气中低浓度苯系物的分析方法 ,研究最佳解吸条件和分析条件。方法 采用TenaxTA吸附 二次热解吸 毛细管气相色谱法。结果 本方法对苯系物测定的相对标准偏差在 4 30 %～1 0 81 %之间 ,具有良好的重现性。苯系物的加标回收率大于 94 %。苯、甲苯、对二甲苯、邻二甲苯的最低检出浓度分别为 0 0 9、0 1 2、0 2 3、0 2 6 μg m3。结论 本方法适合测定环境空气中低浓度的苯系物
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| 关 键 词： | TenaxTA 热解吸 苯系物 测定 |
| 文章编号： | 1000-8020(2004)04-0425-03 |
| 修稿时间： | 2004年2月6日 |
Tenax TA adsorption/thermal desorption/capillary gas chromatography for monitoring BTX in the ambient air |
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| Xu Dongqun,Liu Chenming,Zhang Aijun,Dong Xiaoyan,et al..Tenax TA adsorption/thermal desorption/capillary gas chromatography for monitoring BTX in the ambient air[J].Journal of Hygiene Research,2004,33(4):425-427. |
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| Authors: | Xu Dongqun Liu Chenming Zhang Aijun Dong Xiaoyan |
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| Institution: | Institute for Environmental Health and Related Products Safety, Centers for Disease Prevention and Control, Beijing 100021, China. |
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| Abstract: | OBJECTIVE: A method for monitoring low concentration of benzene, toluene, p-xylene, o-xylene (BTX) in ambient air is set up. The optimum of desorption and analysis parameter is selected. METHODS: Tenax TA adsorption/thermal desorption/capillary gas chromatography is used. RESULTS: The relative standard deviation of benzene, toluene, p-xylene, o-xylene in ambient air are from 4.30% to 10.81%, which shows this method has good repeatability. The recoveries of BTX are more than 94%. The minimum detectable concentration to benzene, toluene, p-xylene, o-xylene is 0.09, 0.12, 0.23, 0.26 microg/m3 respectively. CONCLUSION: This method can be used to determinate low concentration of BTX in ambient air. |
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| Keywords: | Tenax TA thermal desorption BTX monitoring |
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