催化褪色光度法测量痕量锌  

Catalytic Spectrophotometry for the Determination of Trace Zinc

作　　者：李文琦[1] 杨天隆[1] 林桂金[1] 肖华琼[1] 林萍英[1] 

机构地区：[1]漳州师范学院化学与环境科学系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2009年第1期53-56,共4页Journal of ZhangZhou Teachers College（Natural Science)

基　　金：福建省教育厅资助项目(JB07143)

摘　　要：基于聚丙烯酸钠存在的条件下,锌对高碘酸钾氧化钙黄绿素褪色有明显的催化作用及聚丙烯酸钠对此催化反应有显著的增敏效应,从而建立了聚丙烯酸钠增敏催化高碘酸钾氧化钙黄绿素褪色光度测量痕量锌的新方法.在0.040～2.00μg/L范围内,锌离子浓度与ΔA值符合比耳定律,线性回归方程为ΔA=0.04982+0.06828CZn2+(μg/L),r=0.9992,检出限1.9×10-11g/mL.用于水样和人发样中锌含量的测定,结果满意.A new catalytic spectrophotomery for the Determination of trace Zinc has been studied based on the catalytic effect of Zinc on oxidizing decoloration rection of Calcein and potassium perindate anti on the sensitive effect of Polyacrylicacidsodiumsalt （PAAS）. Beefs law is obeyed in the range of 0.040 to 2.00p.g/L and the linear regression aqnation is AA=0.04982＋0.06828CZn2＋ （ug/L） （r=0.9992）,the detection limit is 1.9×10^-11g/mL.The method has been applied to the determination of trace Zinc in water and human hair samples with satisfactory results.

关 键 词：锌 钙黄绿素 聚丙烯酸钠 增敏 催化褪色光度法 

分 类 号：O657.3[理学—分析化学]