Spectrophotometric determination of cobalt in bright nickel plating bath was advanced with ammonium thiocyanate as complexing agent and butyl acetate as extracting agent.

• 以硫氢酸铵络合钴离子,随后用乙酸丁酯进行萃取,利用分光光度法测量光亮镀镍溶液中的钴离子。