摘要
苯系物是衡量水质的重要指标之一,是水环境监测优先管控的主要污染物。生活饮用水,尤其水源地水中通常并不希望检出苯系物,这些水体中苯系物的含量一般不高,浓度在方法检出限附近。因此分析过程所用试剂,尤其是标样配制必不可少的甲醇中是否存在苯系物杂质,存在情况如何,对水中低浓度苯系物的准确测定非常关键。吹扫捕集-气相色谱-质谱联用法(P&T-GC-MS)具有较好的分离度和灵敏度,且进样量少、干扰小,是水中痕量苯系物检测的优选方法。本研究基于P&T-GC-MS法,开展甲醇试剂的苯系物本底研究,探索实验室常用甲醇试剂中的苯系物杂质对定量结果的影响程度和影响规律,为环境监测相关工作和研究提供数据支持。
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.
作者
王巧云
张海宇
王海燕
马名扬
WANG Qiao-yun;ZHANG Hai-yu;WANG Hai-yan;MA Ming-yang(Guangdong Industry Polytechnic University,Guangzhou 510300,China;Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals,China National Analytical Center,Guangzhou 510070,China)
出处
《化学试剂》
CAS
2025年第1期97-104,共8页
Chemical Reagents
基金
广东省环境资源利用与保护重点实验室开放基金项目(KLEPRU-202421)
广东省教育厅2022年度普通高校重点领域专项项目(2022ZDZX4067)
2023广东轻工职业技术学院大学生创新性科研项目(XSKYL202333)
2023年度广东省职业院校双创教指委教育教学改革项目[粤职创新创业教育委(2024)2号-24]。
