摘要
文章提出了采用硝酸溶样,高氯酸直接冒烟氧化C r3+为C r2O72-,硫酸亚铁铵氧化-还原快速滴定来测定铜基金刚石工具中铬的新方法。试验表明,该方法省时、操作简便,减少了环境污染,是一种有效的实用方法。
In this paper,the authors introduce a new method which uses nitric acid to dissolve the samples,emits perchloric acid to oxidize Cr^(3+) to Cr_2O_7^(2-),then uses(NH_4)_2Fe(SO_4)_2 oxidation-reduction titration to determine the chromium content in Cu-based diamond tools.The result shows that this is an effective practical method with less time,simple operation and less environmental pollution.
出处
《超硬材料工程》
CAS
2006年第1期8-9,共2页
Superhard Material Engineering
关键词
金刚石工具
铬
快速测定
铜基体
diamond tool
chromium
rapid determination
Cu-based
