A method using sodium diethyldithiocarbamate trihydrate (DDTC) as chromogenic agent for determinating micro-amounts of copper in tea was developed by spectrophotometry in aqueous solution.

• 研究了以二乙基二硫代氨基甲酸钠(铜试剂,DDTC)为显色剂水相比色测定茶叶中铜含量的方法。