催化动力学褪色光度法测定痕量铜(Ⅱ)的研究  

Study on Determination of Trace Copper(Ⅱ) by CatalyticKinetic Discoloring Spectrophotometry

作　　者：黄森科[1] 黄立漳[2] 

机构地区：[1]漳州师范学院化学系,福建漳州363000 [2]福州大学化学化工学院,福建福州350002

出　　处：《漳州师范学院学报（自然科学版）》2006年第4期83-86,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：基于加热和HAC-NaAC缓冲溶液存在下,痕量铜(Ⅱ)能催化高碘酸钠氧化孔雀绿的褪色反应,从而建立了催化高碘酸钠氧化孔雀绿褪色光测定痕量铜(Ⅱ)的新方法.该方法的线性范围4.00-16.00ng/mL铜(Ⅱ),检出限为4.70×10-9g/mL,用于茶叶,菇类中痕量铜的测定,回收率约在97.0%--103.5%之间,结果满意.A kinetic spectrophotometric method for the determination of trace Copper（ Ⅱ ） has been establishedbased ,on its inhibttory effect on the oxidation discoloration rection of malachite green by NaIO4. on hit in HAC-NaAC.The range of measurement is 4-16ng /mL Copper（ Ⅱ ）,The detertion limit of the method is 4.70 × 10^-9g/mE .The method was applied to deterrraine trace copper in the teas with satisfactory results, and therate of recovery offrorn 97.0% to 103.5%.

关 键 词：铜(Ⅱ) 孔雀绿 催化褪色光度法 

分 类 号：O657.3[理学—分析化学]