This paper introduces the procedure and precaution of how to make use the reducibility of Na2S03 to test to purioty of gold and how to recycle and purify mix gold.

• 本文介绍了利用亚硫酸钠的还原性测定黄金含量,回收或提纯合质金的操作方法和注意事项,该方法简单易行,准确度高。