摘要
本文提出了测定微量钴的新方法,研究了在SDS存在下,5-Br-PADAT与钴的显色反应条件,在pH4的缓冲溶液中,钴与5-Br-PADAT生成深红色络合物。其络合物组成为1:3,摩尔吸光系数为6.6×10~4,0～15μgCo(Ⅱ)/25ml符合比尔定律。拟定的方法甩于伟晶岩、含铜硅卡岩中钴的测定,结果满意。
A new method for the determination of cobalt has been developed in NaAc-HCl buffer (pH4)with 5-Br-PADAT. Under the experimental conditions cobalt forms a 1:3 complex with the reagent. The molar absorptivity of the complex is 6.6X104L mol-1 cm-1 at S30nm. Beer's law is obeyed within cobalt concentration range of 0 to 15ug/25ml. The method has been applied to determine cobalt in ores with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1992年第4期31-33,共3页
Metallurgical Analysis
