Benzene analogies are main indicators for assessing water quality and are prioritized pollutants for water environmental monitoring and control.The occurrence of benzene analogies in drinking water,particularly in source water,is generally considered to be undesirable.The concentrations of benzene analogies in such water bodies are typically low,with test results close to the detection limits of analytical methods.Therefore,the meticulous consideration of benzene analogies as impurities in the reagents utilized during sample analysis is imperative for the precise detection of these compounds at minimal concentrations in authentic samples.As an essential reagent for preparing standard samples of benzene analogies,methanol should be given special attention.The Purge and Trap-Gas Chromatography-Mass Spectrometry(P&T-GC-MS),with its good separation,high sensitivity,low sample injection volume,and minimal interference,is an optimal method for detecting trace amounts of benzene analogies in water.Based on the P&T-GC-MS method,this study investigated the background levels of benzene analogies in several commonly used methanol reagents in laboratories,explored the influence of benzene analogies on quantitative results,and provided data support for related environmental monitoring research.
关键词
甲醇试剂/苯系物/本底研究/吹扫捕集-气相色谱-质谱联用法(P&T-GC-MS)/痕量分析
Key words
methanol reagent/benzene analogies/background study/Purge and Trap-Gas Chromatography-Mass Spectrometry(P&T-GC-MS)/trace analysis
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