生活饮用水中苯含量测定的不确定度评定  

Uncertainty Evaluation for the Determination of Benzene Content in Drinking Water

作　　者：杨祥 YANG Xiang(Guangzhou Academy of Special Equipment Inspection&Testing,Guangzhou 510100,China)

机构地区：[1]广州特种设备检测研究院,广东广州510100

出　　处：《现代食品》2025年第5期165-168,179,共5页Modern Food

摘　　要：采用气相色谱-质谱联用法测定生活饮用水中苯含量,并对测量过程进行不确定度评定。本文通过顶空进样和吹扫捕集技术对苯进行分离富集,结合标准曲线法进行定量分析。结果表明,苯含量的测量结果为ρ=(0.50±0.03)μg·L^(-1)(k=2)。在测定生活饮用水中苯含量的过程中,样品测量重复性、仪器测量引入的不确定度对最终合成的不确定度有较大影响。Using gas chromatography-mass spectrometry to determine the benzene content in drinking water,and evaluating the uncertainty of the measurement process.This article uses headspace injection and sweep capture techniques to separate and enrich benzene,combined with standard curve method for quantitative analysis.The results showed that the measurement of benzene content wasρ=(0.50±0.03)μg·L^(-1)(k=2).In the process of determining the benzene content in drinking water,the repeatability of sample measurement and the uncertainty introduced by instrument measurement have a significant impact on the final synthesis uncertainty.

关 键 词：生活饮用水 苯含量 气相色谱-质谱联用法 不确定度评定 

分 类 号：TS207.3[轻工技术与工程—食品科学]