微柱富集-原子吸收光谱法在线联用测定铅和钙  

Determination of Lead and Calcium by Using Combination of Flame Atomic Absorption Spectrometry with Micro-column Preconcentration

作　　者：刘文涵[1] 胡伟[1] 周执明[1] 赵力达[1] 赵锋[1] 

机构地区：[1]浙江工业大学化工学院,杭州310032

出　　处：《分析化学》2002年第8期927-927,共1页Chinese Journal of Analytical Chemistry

基　　金：浙江省分析测试基金资助项目 (No .0 10 37)

摘　　要：研究了“电化学前处理 /微柱吸附预浓缩 /原子吸收在线检测”联用方法 ,利用自制的微型电化学富集柱对金属离子的吸附效应进行预富集 ,再瞬间解吸溶出直接进入原子吸收测定 ,极大的提高了测试灵敏度和降低了检出限 ,经对铅、钙离子的测定研究 ,可使特征浓度和检出限降低 1～ 2个数量级以上 ,取得了令人满意的效果。A combination of flame atomic absorption spectrometry (FAAS) and micro column preconcentration for the determination of Pb 2+ and Ca 2+ was proposed. The ions were adsorbed by the self made electrochemical preconcentration micro column in order to the preconcentration. Then the adsorbed ions instantly returned into solution which is small in size and introduced directly into FAAS. The method can greatly improve determination sensitivity. The characteristic concentration and detection limit for the determination of Pb, Ca ions can be improved with 1～2 order of magnitude. The results are satisfactory.

关 键 词：微柱富集 测定 原子吸收光谱法 预富集 铅 钙 

分 类 号：O657.3[理学—分析化学]