单羟基七元瓜环的固相微萃取纤维对环境水样中苯酚类物质的分析检测  

Determination of Phenols in Environmental Water Samples by Solid-phase Microextraction Fibers Based on Monohydroxy-Cucurbit[7]uril

作　　者：王莎莎 李霈 冉金凤 董南[1] WANG Sha-sha;LI Pei;RANJin-feng;DONG Nan(School of Chemistry and Chemical Engineering,Guizhou University,Guiyang550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《广州化学》2021年第4期57-64,共8页Guangzhou Chemistry

基　　金：国家自然科学基金项目(21665005)资助。

摘　　要：以单羟基七元瓜环(Q[7]-OH)和端羟基聚二甲基硅氧烷(OH-PDMS)为固定相,利用溶胶-凝胶方法制备了PDMS/Q[7]-OH的固相微萃取纤维(SPME fiber)。建立了PDMS/Q[7]-OH SPME纤维-气相色谱(GC)/氢火焰离子化检测器(FID)对环境水样中5种苯酚类化合物同时检测的分析方法。实验结果表明5种酚类化合物的线性范围在0.5~5000μg/L之间,相关系数均大于0.9940。方法的检出限(LOD)在0.1~3.1μg/L范围内,富集倍数为6~104倍。三个加标浓度的平均相对回收率(n=3)在70.1%~113.7%范围内,日内及日间精密度的RSD在3.2%~9.9%之间(n=5,c=500μg/L)。方法灵敏、简便,可满足环境水样中苯酚类化合物同时测定的要求。Solid phase microextraction fiber(SPME fiber)based on PDMS/Q[7]-OH was prepared by sol-gel method using hydroxyl-terminated polydimethylsiloxane(OH-PDMS)and monohydroxy-cucurbit[7]uril(Q[7]-OH)as stationary.A PDMS/Q[7]-OH SPME fiber-gas chromatography with flame ionization detector(GC/FID)method was developed for the simultaneous determination of five phenols in environmental water samples.The results indicated that the linear range was 0.5~5000μg/L with correlation coefficient(R)>0.9940.The limits of detection of the proposed method were in the range of 0.1~3.1μg/L and an enrichment factor were between 6 and 104 fold.The mean relative recoveries(n=3)at three spiked levels ranged from 70.1%to 113.7%,with intra-precision and inter-precision both in the range of 3.2%~9.9%.The proposed method was simple and sensitive,and was suitable for the simultaneous analysis of phenols in environmental water.

关 键 词：单羟基取代七元瓜环 固相微萃取纤维 苯酚类化合物 气相色谱 环境水样 

分 类 号：O657.71[理学—分析化学]