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便携式气相色谱质谱测定水中挥发性有机物再现性和准确度研究 被引量:12

Study on Reproducibility and Accuracy of Determining Volatile Organic Compounds in Water by Portable GC-MS
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摘要 建立了便携式顶空-气相色谱-质谱(HS-GC-MS)测定水中挥发性有机物的方法.以水中苯系物、卤代烃和氯代苯等VOCs为研究对象,在同一实验室内,使用3台便携式HS-GC-MS模拟现场应急监测环境开展检测活动,研究测定结果的再现性和准确度.实验结果表明,检测结果的相对标准偏差为0.7%~l3%;绝大多数目标化合物测定结果的回收率为80%~120%.综合来看,方法的精密度和准确度基本满意,能够满足应急监测工作的需要. A method for portable gas chromatography and mass spectrometry (GC-MS) was established to analyze volatile organic compounds (VOCs) in water.At a same laboratory,the benzene and its analogies(BTEX) 、halo-hydrocarbons and chlorobenzenes of VOCs in water were determined by portable headspace (HS)-GC-MS in order to study their analytic reproducibility and accuracy.The result reaches reproducibility with the RSD from O.7% to 13%,as well as accuracy with the recoveries for most compounds from 80% to 120%.Generally,the precision and accuracy of the method were satisfied to meet the demand of emergency monitoring.
出处 《中国环境监测》 CAS CSCD 北大核心 2013年第6期117-122,共6页 Environmental Monitoring in China
关键词 便携式GC-MS 准确度 再现性 应急监测 挥发性有机物 portable GC-MS accuracy reproducibility emergency monitoring volatile organic compounds
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