基于沸石咪唑酯骨架结构材料11的微固相萃取结合高效液相色谱用于水样中五种紫外吸收剂的测定  

Zeolite Imidazolate Framework 11 Based Vortex-Assisted Micro-Solid-Phase Extraction of 5 Kinds of UV Filters in Water Samples Followed by High Performance Liquid Chromatography

作　　者：王颖臻 葛丹丹 宋家漫 沈茂珍 WANG Ying-zhen;GE Dan-dan;SONG Jia-man;SHEN Mao-zhen(School of Chemistry and Chemical Engineering,Kunming University,Kunming 650214,China)

机构地区：[1]昆明学院化学化工学院,云南昆明650214

出　　处：《化学试剂》2022年第8期1197-1202,共6页Chemical Reagents

基　　金：云南省高校食品安全检测技术重点实验室项目;云南省应用基础研究计划项目高校联合青年项目(2018FH001-102)。

摘　　要：建立了一种基于ZIF-11的膜保护微固相萃取(μ-SPE)的样品前处理方法,并与高效液相色谱(HPLC)联用测定环境水样中5种紫外吸收剂。对洗脱剂种类、固相萃取剂用量、洗脱时间、萃取时间、盐浓度、pH值系列影响萃取效率因素的相关条件进行优化。结果表明,固相萃取剂用量10 mg、萃取时间8 min、洗脱剂V(甲醇)∶V(乙腈)=3∶7、洗脱时间9 min、溶液pH值7、10 mg/mL氯化钠条件下,5种紫外吸收剂在5~1000 ng/mL范围内线性关系良好,相关系数均大于0.9925,检出限为0.8~1.5 ng/mL;定量限为2.5~5.0 ng/mL;相对标准偏差为0.9%~6.5%。方法简单、快速、准确,用于测定湖水、河水、自来水中的紫外线吸收剂,回收率为88.7%~112.3%,相对标准偏差为0.3%~5.5%。Zeolite imidazolate framework 11 based micro-solid-phase extraction(μ-SPE),followed by high-performance liquid HPLC with diode array detection method was developed for the determination of 5 kinds of UV filters in water samples.Parameters affecting VA-μ-SPE efficiencies such as extraction sorbent amount,desorption solvent,vortex time,desorption time,solution pH,and salt concentration were investigated.The optimum extraction conditions were as follows:the amount of sorbent was 10 mg,extraction time was 8 min,desorption time was 9 min,desorption solvent was V(methanol)∶V(acetonitrile)=3∶7,solution pH was 7 and salt concentration was 10 mg/mL of sodium chloride.Under the optimized conditions,the linearity range was in the range of 5~1000 ng/mL with correlation coefficients higher than 0.9925.Limits of detection and limits of quantification were in the range of 0.8~1.5 ng/mL and 2.5~5.0 ng/mL,respectively.Finally,the proposed method was successfully applied to determine UV filters in real water samples.The relative recoveries ranged from 88.7%to 112.3%.The developed method proved to be simple,quick,exact,and can be used to determine UV filters in real water samples.

关 键 词：沸石咪唑酯骨架结构材料-11 漩涡辅助微固相萃取 紫外吸收剂 水样分析 

分 类 号：X830[环境科学与工程—环境工程]