摘要
石膏中钙含量的测定采用碱熔方法处理样品,高锰酸钾滴定测定,试验了碱熔时氢氧化钾的加入量、熔融时的最佳温度和熔融时间等。该方法准确度高,精密度好,加标回收率满足需求,此种方法具有一定的应用推广价值。尤其适合的测定范围:含钙量:10%~50%。
The determination of calcium content in gypsum was carried out by alkali melting method and potassium permanganate titration.The addition of potassium hydroxide,the optimum temperature and melting time were tested.This method has high accuracy and good precision,the recovery rate meets demand as well.This method has certain application and popularization value.Measurement rang of calcium content is 10%~50%.
作者
程钱夏
CHENG Qian-xia(Guixi Smelter,Jiangxi Copper Corporation Limited,Guixi 335424,Jiangxi,China)
出处
《铜业工程》
CAS
2019年第6期88-91,共4页
Copper Engineering
关键词
高锰酸钾
石膏
钙
碱熔
氢氧化钾
草酸
potassium permanganate
gypsum
calcium
alkali fusion
potassium hydroxide
oxalate
