固相微萃取–气相色谱–三重四级杆质谱检测饮用水水源中6种环状缩醛类致嗅物质  

Determination of cyclic aldehyde compounds in drinking water by solid phase micro extraction-gas chromatography-triple quadrupole mass spectrometry

作　　者：伍银爱 肖裕泽 WU Yin-Ai;XIAO Yu-Ze(Guangdong Provincial Academy of Environmental Science,Guangzhou 510045,China)

机构地区：[1]广东省环境科学研究院,广州510045

出　　处：《实验室检测》2024年第10期143-146,共4页Laboratory Testing

摘　　要：目的建立饮用水水源环状缩醛致嗅物质的检测方法,以践行高质量发展,为提升公共服务品质提供技术支撑。方法本研究针对饮用水水源中环状缩醛致嗅物质的检测,建立固相微萃取–气相色谱–三重四级杆质谱定量方法。结果固相微萃取法测试饮用水水源中6种环状缩醛类物质的最优条件为孵化温度为50℃,转速为500 r/min,孵化时间为15 min,样品孵化后萃取纤维萃取时间为20 min。定量方法的检出限为2.87~4.67 ng/L,相对标准偏差为6%~16%,加标回收率范围为70.7%~115%。采集某水源水样品作为该方法的应用对象,确认该水样中主要致嗅的环状缩醛物质为2–EDD,其检出浓度为32 ng/L。结论应用结果表明该方法能准确、快速地定量饮用水水源中主要致嗅的环状缩醛类物质,具有准确性、可靠性和适用性。Objective To establish a method for the detection of cyclic aldehyde compounds in drinking water sources,in order to practice high quality development and improve the technical support of public service quality.Methods Quantitative detection method of cyclic aldehyde compounds in drinking water by using SPME-GC-MS/MS were established.Results The results show that the optimal conditions for SPME aimed at cyclic aldehyde compounds in drinking water are an incubation temperature of 50℃,a rotational speed of 500 r/min,an incubation duration of 15 min,followed by a sample extraction time of 20 min.The detection limits of this quantitative detection method were 2.87~4.67 ng/L,the relative standard deviation were 6%~16%,the recoveries were 70.7%~115%.A specific water sample was collected to ascertain that the key odor-causing compound was 2-EDD,exhibiting concentrations 32 ng/L.Conclusion This method can accurately and swiftly identify key odor-causing compounds in drinking water.

关 键 词：固相微萃取–气相色谱–三重四级杆质谱法 饮用水水源 环状缩醛类致嗅物质 

分 类 号：O657.63[理学—分析化学] TU991.15[理学—化学] X832[建筑科学—市政工程]