摘要
研究了酸碱滴定法间接测定钡含量的方法。方法基于被测Ｂａ￣２＋与Ｋ＿２Ｃｒ＿２Ｏ＿７溶液反应生成ＢａＣｒＯ＿４沉淀，置换出与Ｂａ￣２＋等摩尔的Ｈ￣＋，以溴甲酚绿为指示剂，用ＮａＯＨ标准溶液滴定而间接测定钡。方法简便快速，应用于钡盐及重晶石中钡的测定，结果满意。
An acid-base titration method is proposed for the lndirect determination of barium.It is based on the fact that Ba￣2+ reacts with K_2Cr_2O_7 solution to form a yellow precipitate of BaCrO_4 and the free H￣+ can then be titrated with standard NaOH solution.The method is simple and rapid. This method has been used in the determination of barium in barium salts and barite with satisfactory results.
出处
《化学工业与工程》
CAS
1995年第3期49-52,共4页
Chemical Industry and Engineering
关键词
钡
测定
酸碱滴定法
滴定
s:barium determination
potassium dichromate
barium chromate
acid-base titration
