| 在线液液萃取-气相色谱-质谱法测定生活饮用水中卤代乙腈 |
| Determination of Haloacetonitriles in Drinking Water Using Automated Liquid-Liquid Extraction-Gas Chromatography-Mass Spectrometry |
| 投稿时间：2021-08-12 修订日期：2022-05-30 |
| DOI：10.19316/j.issn.1002-6002.2022.05.20 |
| 中文关键词: 饮用水|消毒副产物|卤代乙腈|水质检测|在线液液萃取 |
| 英文关键词:drinking water|disinfection by-products|halogenated acetonitrile|water quality detection|online liquid-liquid extraction |
| 基金项目:山东省中央引导地方科技发展资金项目(YDZX20203700001642);山东省重点研发计划(2020CXGC011406);国家自然科学基金青年项目(42007231);济南市水务科技项目(JNSWKJ202108);山东省泰山学者建设工程专项(ts201712084);山东省自然科学基金面上项目(ZR2021ME166) |
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| 通讯作者:贾瑞宝* 山东省城市供排水水质监测中心, 山东 济南 250101 |
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| 中文摘要: |
| 优化建立了在线液液萃取-气相色谱-质谱法测定饮用水中7种卤代乙腈的方法。通过多功能在线进样装置,研究设计了在线液液萃取的技术流程,优化了液液萃取关键参数,并建立了气相色谱-质谱检测方法。该方法对氯乙腈、二氯乙腈、三氯乙腈、溴乙腈、二溴乙腈、溴氯乙腈和碘乙腈等7种卤代乙腈都有较好的检测灵敏度,方法检测限为0.1~0.8 μg/L,纯水中高浓度加标回收率为72.0%~91.4%,精密度为1.8%~3.9%。经技术对比和应用验证,该方法具有高效灵敏、简便快速等特点,样品检测无干扰,自动化程度高,适用于饮用水中卤代乙腈类消毒副产物的检测。 |
| 英文摘要: |
| An online liquid-liquid extraction-gas chromatography-mass spectrometry method for the determination of seven halogenated acetonitriles in drinking water was optimized and established.Through the multipurpose sampler device,the technical process of online liquid-liquid extraction was researched and designed,the key parameters of liquid-liquid extraction were optimized,and the gas chromatography-mass spectrometry detection method was established.This method had good detection sensitivity for seven kinds of haloacetonitriles,including chloroacetonitrile,dichloroacetonitrile,trichloroacetonitrile,bromoacetonitrile,dibromoacetonitrile,bromochloroacetonitrile and iodoacetonitrile.The limit of detection of this method was 0.1-0.8 μg/L.The high-concentration spiked recovery rate in pure water was 72.0%-91.4%,the precision was 1.8%-3.9%.After technical comparison and application verification,the method has the characteristics of high efficiency,sensitivity,simplicity and speed,no interference in sample detection,and high degree of automation.It is suitable for the detection of halogenated acetonitrile disinfection by-products in drinking water. |
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