浊点萃取—同步荧光法测定水中苯并[a]芘  被引量:6

Preconcentration and detection of benzo[a]pyrene in water samples by synchronous fluorometry spectrometry after cloud-point extraction

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作  者:杨立峰[1] 吴俊森[1] 许文[1] 

机构地区:[1]山东建筑大学市政与环境工程学院,山东济南250101

出  处:《山东建筑大学学报》2011年第2期115-118,161,共5页Journal of Shandong Jianzhu University

基  金:国家水体污染控制与治理科技重大专项(2008ZX07422-001)

摘  要:选用非离子表面活性剂TritonX-114,采用浊点萃取一同步荧光法对水中苯并[a]芘的萃取效率和影响因素进行研究。结果表明:TritonX-114对苯并[a]芘的萃取效率与其自身浓度和苯并[f1]芘的初始浓度密切有关,受萃取时间、溶液pH、离心时间和离心速度的影响不大。该方法的线性范围为0—0.11mg/L,检出限为0.03μg/L,RSD为3.42%,水样加标回收率为95.8%~102%。This article makes a study on the preconcentration and determination of Benzo [ a] pyrene by CPE and constant-wavelength synchronous fluorescence spectrometry respectively. The extraction efficiency is especially influenced by the surfactant concentration of Triton X-114 and innial concentration of benzo[a]pyrene. With the surfactant concentration increasing, the efficiency elevates and then decreases. It is negative correlation with innial benzo[ a ] pyrene concentration. The linear range is 0 - 0.1 mg/L, the detection limits is 0. 03μg/L, RSD of standard solution is 3.42% and the spiked re- covery of water samples is from 95.8% to 102%.

关 键 词:苯并[A]芘 TRITON X-114 浊点萃取 萃取效率 同步荧光 

分 类 号:X832[环境科学与工程—环境工程]

 

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