| 吹扫捕集-气相色谱-质谱法测定地下水中苯系物的不确定度评定 |
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| 引用本文： | 李松,饶竹,黄毅,贾静. 吹扫捕集-气相色谱-质谱法测定地下水中苯系物的不确定度评定[J]. 光谱实验室, 2010, 27(2): 423-429 |
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| 作者姓名： | 李松 饶竹 黄毅 贾静 |
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| 作者单位： | 国家地质实验测试中心,北京市西城区百万庄大街26号,100037 |
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| 基金项目： | 国土资源部地质大调查项目资助(200120190107-05);;地质调查工作项目-地下水有机污染物分析技术研究项目资助(121201063460);;国家地质实验测试中心基本科研项目资助(2008CSJ02) |
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| 摘 要： | 依照《测量不确定度评定与表示》,对吹扫捕集-气相色谱-质谱法测定地下水中苯系物的结果进行不确定度评定。分析了测量过程中引入的不确定度来源,包括样品采集瓶体积、标准溶液制备、校准曲线回归、样品稀释过程、吹扫捕集前处理方法对样品回收率等分量引入不确定度及其计算方法,最后合成标准不确定度,通过乘以95%概率下的扩展因子2,获得测量结果的扩展不确定度。
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| 关 键 词： | 吹扫捕集 气相色谱一质谱 苯系物 地下水 不确定度评定 |
Uncertainty Evaluation of Measurement Results for the Determination of BTEX_s in Groundwater Samples by Purge and Trap-Gas Chromatography-Mass Spectrometry |
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| Li Song,Rao Zhu,Huang Yi,Jia Jing. Uncertainty Evaluation of Measurement Results for the Determination of BTEX_s in Groundwater Samples by Purge and Trap-Gas Chromatography-Mass Spectrometry[J]. Chinese Journal of Spectroscopy Laboratory, 2010, 27(2): 423-429 |
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| Authors: | Li Song Rao Zhu Huang Yi Jia Jing |
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| Affiliation: | National Research Center for Geoanalysis;Beijing 100037;P.R.China |
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| Abstract: | Based on Evaluation and Expression of Uncertainty in Measurement,the measurement results of BTEXs in groundwater samples by purge and trap-gas chromatography-mass spectrometry were collected and the measurement uncertainty was evaluated.The sources of uncertainty produced in analysis process were discussed and the volume of sample collection bottles,preparation of standard solution,standard curve regression,dilution of sample,sample recovery of the pre-treatment process,etc.were considered as the main sourc... |
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| Keywords: | Purge and Trap Gas Chromatography-Mass Spectrometry BTEXs Groundwater Uncertainty Evaluation |
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