キレート滴定法によるフェロシリコン中のカルシウムの定量
スポンサーリンク
概要
- 論文の詳細を見る
A simple and rapid determination method for calcium in ferro silicon by chelatometric titration has been established.<BR>A half g of sample is decomposed with nitric acid and hydrogen floride, and white fume is emitted by the addition of hydrogen perchloride. The acid concentration is adjusted with hydrochloric acid methylisobutylketon is added to it for the seperation of iron and other metals. With ammonia water and bromine water, aluminum, titanium and manganese are seperated. To the filtrate, triethanolamine, sodium cyanate and sodium hydroxide are added to adjust the pH at 12.513.0, and then calcium is tritrated with EDTA standard solution.<BR>No influence is given upon the existence of 3% and less of Al, and also 0.4% and less of Ti, Cr, Cu and Ni.
- 社団法人 日本分析化学会の論文