浊点萃取-分光光度法测定自来水中痕量铝  

The determination of trace aluminum in the water by cloud point extraction spectrophotometry

作　　者：秦建芳[1] 弓巧娟[1] 黄健[1] QIN Jianfang;GONG Qiaojuan;HUANG Jian(YunCheng University,YunCheng 044000,China)

机构地区：[1]运城学院应用化学系,山西运城044000

出　　处：《化学研究与应用》2018年第2期270-273,共4页Chemical Research and Application

基　　金：国家自然科学基金项目(21576230)资助;山西省教育厅重点项目(J2014103)资助;运城学院产学研合作研究项目(CY-2015015)资助;山西省化学特色建设专业山西省自然科学基金项目(2013011009-3)资助;山西省回国留学人员资助项目(2013-105)资助

摘　　要：建立以非离子表面活性剂Triton X-114为萃取剂、二甲酚橙为螯合剂测定水中痕量铝的方法。通过单因素试验优化了影响浊点萃取的各个因素:溶液的p H值、缓冲溶液的用量、螯合剂的用量、表面活性剂的用量、平衡时间和平衡温度。测得铝的线性范围为0.01~0.14mg·L^(-1),该法的检出限为3.23μg·L^(-1),相对标准偏差(RSD)为2.8%,加标回收率为93.28%~103.75%。A new cloud point extraction Spectrophotometry was established to determinate trace aluminum in the water by using Triton X-114for extracting agent and by using XO for complexing agent.The effective factors including the pH of the solution,the a-mount of complexing agent,surfactant and buffer solution,balance time and temperature was optimized by Single factor experiment.Under the optimal conditions,the aluminum concentration had a good linear relationship within a range of0.01?0.14mg?L1.the detection Limit was3.23pg?L1,and the relative standard deviation(RSD)was2.8%.the spike recoveries were between93.28%-103.75%.

关 键 词：浊点萃取 分光光度法 铝 二甲酚 

分 类 号：O657.32[理学—分析化学]