铋膜电极阳极溶出伏安法测定血样中的锌  

DETERMINATION OF ZINC IN BLOOD SAMPLE BY ANODIC STRIPPING VOLTAMMETRY WITH BISMUTH FILM ELECTRODES

作　　者：张雁宏[1] 郭子英[1] 樊月琴[1] 

机构地区：[1]山西大同大学化学化工学院,大同037009

出　　处：《化学分析计量》2007年第4期44-46,共3页Chemical Analysis And Meterage

摘　　要：采用阳极溶出伏安法用玻碳电极同位镀铋膜测定血样中的锌。实验结果表明,在0.20mol/L的支持电解质KSCN(pH=2.80)中于-1.00V下搅拌富集2min后,进行阳极极化扫描,可获一灵敏的阳极溶出峰,利用该方法测定锌的检出限为1.0×10-11mol/L,线性范围为5～25μmol/L。锌标准溶液测定结果的相对标准偏差为3.14%(n=11),加标回收率为95.6%～104.8%。Bismuth film glassy carbon electrode was used for zinc content detection of blood sample by anodic stripping volta- mmetry. Experimental results showed that the sensitive stripping peaks of zinc （Ⅱ） were obtained in the supporting electrolyte containing O. 2 mol/L potassium thiocyanate at pH=2.80, when the accumulation potential was 1.00 V with 2 min deposition. The detection limit of Zn^2＋ was 1.0 x 10^-11 mol/L. The peak current was linear with the concentration in the range of 5 - 25 μmol/L for Zn^2＋ , and the relative standard deviation was 3.14%. The method was applied to determine zinc in blood sample, and the recoveries were 95.6% -104.8%

关 键 词：铋膜电极 阳极溶出伏安法 锌 血样 

分 类 号：O657.1[理学—分析化学]