示波极谱法快速测定水样中微量镍  

Rapid Determination of Trace Nickel in Water by Oscillopolarography

作　　者：孙莉[1] 

机构地区：[1]安徽省地质实验研究所,安徽合肥230001

出　　处：《福建分析测试》2010年第1期83-84,87,共3页Fujian Analysis & Testing

摘　　要：在pH9.6的Na2B4O7电解质中,镍和丁二酮肟在-1060mV(vs.SCE)处产生灵敏的络合吸附波,峰电流与镍的浓度在1.0×10-3～25μg/mL范围内呈线性关系,检出限为0.12ng/mL。该方法仪器试剂简单,操作快速简便,用于测定水样中微量镍,结果满意。In the solution of Na2B4O7（pH9.6）,the sensitive polarographic complex adsorptive wave of Ni（Ⅱ）-dimethylglyoxime （DMG） has been investigated in detail. The peak potentiM was at -1060 mV（vs.SCE ） on oseillopolarograph. The concentration of nickel was proportional to the peak height of the second order derivative wave in the range of 1.0×10^-3～25μg/mL. The detection limit was 0.12ng/mL The method was simple, rapid and sensitive, and has been used to determine trace nickel in water.

关 键 词：镍 络合吸附波 示波极谱法 水样 

分 类 号：O657.14[理学—分析化学]