摘要
将通过水热合成法制备的金属有机骨架材料[MIL-101(Cr)]作为吸附剂应用于吸附环境水样中的亚硝胺类消毒副产物,采用超高效液相色谱-串联质谱法(UHPLC-MS/MS)进行测定.通过SEM、TEM和FT-IR技术对MIL-101(Cr)的表面形态和特征基团进行表征,并对影响萃取效率的主要因素,如MIL-101(Cr)的用量、萃取时间、水样的pH值和解吸条件等进行考察.研究表明,当MIL-101(Cr)用量为6.0 mg,pH=9.0,30℃下9 min内可达吸附平衡,回收率高于63.5%,3种亚硝胺的检出限为0.029-0.283μg·L^-1.将方法应用于环境水样的测定,加标回收率在77.9%-107.2%范围内,相对标准偏差低于5.4%.该方法操作简单快速、准确可靠、检出限低,可用于水样中痕量亚硝胺类消毒副产物的检测.
The metal-organic frameworks [MIL-101(Cr)] was synthesized by hydrothermal method and applied to the absorption of N-nitrosamines(NAs) in environmental water coupled with ultra high performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS).The surface morphology was characterized by SEM,TEM and FT-IR.The experimental parameters of solid phase extraction were investigated including the amount of MIL-101(Cr),extraction time,sample pH and desorption conditions.The recoveries of NAs were over 63.5% within 9.0 min when the mass concentration of MIL-101(Cr) was 6.0 mg,the pH value of water sample was 9.0,the desorption temperature was 30 ℃.The detection limits were in the range of 0.029-0.238 μg·L^-1.The developed method was successfully applied to the analysis of NAs in environmental water samples,the recoveries were in the range from 77.9% to 107.2% and the RSDs was within 5.4%.The proposed method was simple,rapid and accurate,which could be applied to the analysis of the trace amount NAs in environmental water samples.
作者
李小蒙
王旭坤
吴怡秋
邵子纯
邵煜晨
陈坤
高仕谦
张占恩
LI Xiaomeng;WANG Xukun;WU Yiqiu;SHAO Zichun;SHAO Yuchen;CHEN Kun;GAO Shiqian;ZHANG Zhan′en(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou,215009,China;School of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou,450001,China;School of Environmental Engineering,Tianping college of Suzhou University of Science and Technology,Suzhou,215009,China)
出处
《环境化学》
CAS
CSCD
北大核心
2019年第6期1258-1265,共8页
Environmental Chemistry
基金
江苏省高校自然科学研究重大项目(15KJA610003)
苏州科技大学人才引进科研项目(331711204)
江苏省高等学校大学生创新创业训练计划(2018001)资助~~
