竹炭固相萃取恒波长同步荧光法快速测定九龙江水样中的多环芳烃  

Determination of PAHs in Water Using Bamboo Charcoal as a Solid-phase Extraction Adsorbent By Constant-wavelength Synchronous Fluorescence Spectrometry

作　　者：童曼霞[1,2] 何立芳[1] 张锐明[1] 陈精朗 

机构地区：[1]龙岩学院化学与材料学院 [2]福州大学石油化工学院

出　　处：《福建分析测试》2017年第3期13-17,共5页Fujian Analysis & Testing

基　　金：国家自然科学基金青年基金资助项目(21607069);福建省科技厅计划重点项目(2010Y0040);福建省教育厅项目(JA13306)

摘　　要：建立了竹炭固相萃取-恒波长同步荧光法检测九龙江水样中多环芳烃(PAHs)。通过实验综合分析,选定正己烷为洗脱溶剂,洗脱溶剂体积为10m L,上样速率为5 m L/min,上样体积为555m L。采用恒波长同步荧光法对多环芳烃进行定性定量,相关系数r>0.99901,检出限在0.0080-0.90 ng·m L-1,相对标准偏差为1.22%-4.20%。此方法应用于测定了龙岩市省控断面九龙江水体中的多环芳烃(PAHs)。水样的加标回收率在98.9%-110.4%该分析方法简便、快速,适用于水体中多环芳烃的分析检测。A solid-phase extraction （SPE） using bamboo charcoal as absorbent coupled with constant wavelength synchro- nous fluorescence analytical method was developed for the determination of 5 polycyclic aromatic hydrocarbons （PAHs） in water samples. The four main factors influencing on extraction efficiency, that is, type and volume of the elution solvent, sampling speed and volume were investigated. A solid-phase extraction with bamboo charcoal cartridges was carried out and the elution was performed with 10 mL of n-hexane. Sampling speed was 5 mL/min. Sampling volume was 555 mL. It was found that good linearity （r ≥0.99901）in the range of the test concentration, the relative standard deviations （RSDs） were in the range of 0.72%-1.68% （n=6）. The detection limits were in the range of 0.0080-0.90 ng. mL-1. By using this method, real samples were determined directly and good results were obtained with the recoveries of 5 PAHs were in the range of 98.9%-110.4%. The results showed the method was cheap, simple, and could used as an excellent alternative for the routine analysis in environmental field.

关 键 词：竹炭 固相萃取 水 多环芳烃 恒波长 同步荧光 

分 类 号：O657.3[理学—分析化学]