浊点萃取-火焰原子吸收光谱法测定水样中的痕量锌  

Determination of trace amouts of zinc in water samples by cloud point extraction-flame atomic absorption spectrometry

作　　者：雷夏[1] 李卫宁[1] 赵斌[1] 杜新[1] 李敬慈[1] 穆海燕[1] 

机构地区：[1]河北农业大学理学院,河北省生物无机化学重点试验室,河北保定071001

出　　处：《河北农业大学学报》2009年第6期117-120,共4页Journal of Hebei Agricultural University

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

摘　　要：研究了以1-（2-吡啶偶氮）-2-萘酚为配位剂,Triton X-114为非离子表面活性剂,硝酸-甲醇为黏度调节剂,浊点萃取-火焰原子吸收光谱法测定锌的方法,对试验条件进行了优化。在最佳条件下,锌的检测限为0.687μg/L,富集倍数为66。对水样中锌的含量进行了测定,加标回收率为95%102%。Using 1-（2-pyridylazo）-2-naphthol（PAN）as chelating agent,Triton X-114 as nonionic surfactant,and HNO3-methnol as regulator of viscosity,the determination conditions of zinc by cloud point extraction-flame atomic absorption spectrometry（CPE-FAAS） method were optimized.Under the optimal conditions,the detection limit of zinc was 0.687 μg/L.The enrichment factor was 66-fold for zinc.The proposed method was successfully applied to the determination of trace quantities of zinc in water samples,with the satisfactory recoveries ranging from 95 % to 102%.

关 键 词：火焰原子吸收光谱法 浊点萃取 锌 1-(2-吡啶偶氮)-2-萘酚 

分 类 号：O657.3[理学—分析化学]