铜—苯基硫脲络合物在Triton X-100—盐酸介质中的极谱吸附波

铜—苯基硫脲络合物在Triton X-100—盐酸介质中的极谱吸附波 POLAROGRAPHIC ADSORPTIVE WAVE OF COPPER PHENYLTHIOUREA COMPLEX IN HC1-TRITON X-100 MEDIUM 曹光周 Cao Guangzhou and Zhao Zaofan first-author 赵藻藩 铜—苯基硫脲络合物在Triton X—100存在下的稀酸介质中,可以产生一个灵敏的阴极导数极谱波。测定铜的线性范围为1×10 -7 —1×10 -6 M.方法的选择性和稳定性均较好,可以用于天然水、人发及矿石试洋中微量铜的测定。用多种方法对极谱波的性质和产生机理进行了研究。 In 0.3M HC1—0.25% Triton X—100 medium containing 3×10 -5 M Phenylthiourea（PT）, by using single sweep oscillopolarography, there is a sensitive derivative polarographic adsorptive wave for Cu（11）—PT complex. E p =-0.35V（vs. SCE）. It can be used to determine trace amouuts of Cu（11） over a range of 1×10 -7 -1×10 -6 M. The method shows good selectivity and stability, and has been successfully used for determining trace amounts of Cu in fresh water, hair and mineral samples, The mechanism of the polarographic wave has been studied by a number of methods. The results showed that Cu 2+ forms a complex with PT: Cu 2+ +2PT=Cu（PT） 2 2+ Cu（PT） 2 2+ can be strongly adsorbed at DME, and while the electrode potential scans towards negative, it is reduced at the electrode and a polarographic wave appears: Cu（PT） 2 2+ +2e+Hg=Cu（Hg）+2PT 中国科学院科学基金 1985-04-01 2021-04-01 4