摘要
介绍了水样与铬酸钡悬浊液共沸产生的Ｃｒ（Ⅵ），在酸性介质中用硫酸亚铁铵标准溶液于３５０ｎｍ波长处光度滴定地表水中硫酸盐含量的方法。其相对标准偏差小于１％，加标回收率为９７．７％～１０３．４％。
The content of Cr(Ⅳ) produced by boiling mixed solution of water sample and suspension of barium chromate is determined through photometric titration with ferrous ammonium sulfate standard solution at wavelength 350nm in acid solution.The content of sulfate in surface water is determined indirectly the relative standard deviation is less than 1% The recovery of standard addition test is between 97.7% and 103.4%.
出处
《冶金分析》
CAS
CSCD
北大核心
1996年第5期28-30,共3页
Metallurgical Analysis
关键词
光度滴定
地表水
硫酸盐
Photometric titration,Surface water,Sulfate
