超声辅助分散液-液微萃取测定水样中的铜

作     者：杜新 李卫宁 张婧雯 李超 马晶军 李敬慈 DU Xin;LI Wei-ning;ZHANG Jing-wen;LI Chao;MA Jing-jun;Li Jing-ci

作者机构：河北农业大学理学院河北省生物无机化学重点实验室河北保定071001 

出 版 物：《化学研究与应用》 (Chemical Research and Application)

年 卷 期：2010年第22卷第7期

页      面：965-968页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：河北省教育厅科研发展基金项目(2007121)资助 河北农业大学非生命学科和新兴学科科研发展基金项目资助 

主　　题：超声辅助萃取 液-液微萃取 火焰原子吸收光谱法 铜 

摘      要：The process of ultrasound-assisted dispersive liquid-liquid microextraction(USADLLME) was successfully applied for the extraction and preconcentration of trace copper from water samples,prior to flame atomic absorption spectrometry(FAAS).In the proposed approach,1-(2-pyridylazo)-2-naphthol(PAN) was used as a chelating agent and carbon tetrachloride was selected as extraction *** the optimized experimental conditions(extraction solvent volume:80 μL;pH=5.00;PAN amount:10-6 mol;extraction time:15 min and extraction temperature:40°C),an enrichment factor of 14.3 was obtained from only 6.00 mL of water *** calibration graph was linear in the range of 10.00～500.00 μg/L with a detection limit of 0.85 μg/*** relative standard deviation(RSD) for eleven replicate measurements of 20.00 and 400.00 μg/L of copper were 3.71 and 3.20%.The method was applied to the analysis of tap,river,and sea water samples and good spiked recoveries over the range of 90.4～100.5% were obtained.