同步荧光法测定河水中的多环芳烃  

Determination of Polycyclic Aromatic Hydrocarbons in Water by Synchronous Fluorescence Spectroscopy

作　　者：童曼霞[1] 张锐明[1] 陈精朗 

机构地区：[1]龙岩学院化学与材料学院,福建龙岩364012

出　　处：《广东化工》2016年第20期55-57,共3页Guangdong Chemical Industry

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能量同步荧光法测定河水中多环芳烃(PAHs)。优化了实验条件。选定正己烷为洗脱溶剂,洗脱溶剂体积为10 m L,上样速率为5 m L/min,上样体积为555 m L。该方法的检出限在0.185~1.77 ng·m L^(-1)之间,相对标准偏差为2.28%~5.40%,实际水样的加标回收率为95.4%~110.7%。A method for simultaneous determination of polycyclic aromatic hydrocarbons（PAHs） in water was developed by constant-energy synchronous fluorescence spectrometry with bamboo charcoal solid phase extraction. Based on comprehensive analysis of experiments, n-hexane was selected as elution solvent. Influences of four main factors, type and dosage of absorbent, speed and volume of sampling, on extraction efficiency were investigated. Solid-phase extraction with bamboo charcoal cartridges was carried out under the condition of 10 m L n-hexane as elution solvent with 5m L/min sampling speed and 555 m L sampling volume. As a result, detection limits were in the range of 0.185~1.77 ng·m L^（-1） for the PAHs, relative standard deviations ranged from 2.28 % to 5.40 %. By using this method, real samples were determined directly and good results were obtained with recoveries of 95.4 % to 110.7 %.

关 键 词：竹炭 固相萃取 水 多环芳烃 恒能量 同步荧光 

分 类 号：O657.3[理学—分析化学]