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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
Study on Reproducibility and Accuracy of Determining Volatile Organic Compounds in Water by Portable GC-MS
投稿时间:2013-06-20  修订日期:2013-09-30
DOI:
中文关键词:  便携式GC-MS  准确度  再现性  应急监测  挥发性有机物
英文关键词:portable GC-MS  accuracy  reproducibility  emergency monitoring  volatile organic compounds
基金项目:
作者单位
封跃鹏 环境保护部标准样品研究所, 北京 100029 
房丽萍 环境保护部标准样品研究所, 北京 100029 
邱赫男 环境保护部标准样品研究所, 北京 100029 
王伟 环境保护部标准样品研究所, 北京 100029 
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中文摘要:
      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%~13%;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。
英文摘要:
      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 0.7% 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.
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