目前,各合成氨厂醋酸铜氨液中总铜含量的测定,普遍采用氧化—还原碘量法。该法费时,成本高。因此,有必要对铜液中总铜的测定方法进行改革。为此目的,本文对总铜的快速测定——络合滴定进行试验。根据铜液同时存在Cu~+与Cu~(+2)二种离子,溶液呈兰色,而Cu~(+2)——EDTA又较Cu~+——EDTA稳定的特点。我们加入适量的过氧化氢使Cu~+转化为Cu~(+2),然后用10％ At present, the determination of the total copper content in the ammonia solution of ammonia plant in each ammonia plant generally adopts oxidation-reduction iodometry. The cost of the law, the high cost. Therefore, it is necessary to reform the determination method of total copper in copper liquid. For this purpose, this paper tests the rapid determination of total copper - complexometric titration. According to the simultaneous existence of Cu ~ + and Cu ~ (+2) ions in Cu solution, the solution is blue, while Cu ~ (+2) - EDTA is more stable than Cu ~ + - EDTA. We add an appropriate amount of hydrogen peroxide to Cu ~ + into Cu ~ (+2), and then with 10%