摘要
在硫酸及K2 Cr2 O7介质中 ,以硫酸银为催化剂 ,用硝酸银掩蔽Cl-,测定COD回流时间缩短至 8min ,样品的分析周期为 30min ,可达到无污染、低成本、快速测定COD。
The paper describes that in sulphuric acid and K 2Cr 2O 7 medium, taking silver sulphate as catalyst, covering Cl - with silver nitrate, the determination of COD returning time can be shrunk to 8 min, the analyzing period of sample to 30 min, thus, determining COD without pollution, low cost and rapidity.
出处
《冶金丛刊》
2004年第3期19-20,共2页
Metallurgical Collections
