摘要
采用EDTA配位滴定分析法,对于测定钙、镁离子含量及钙含量所使用的指示剂进行改进。发现钙指示剂—萘酚绿B于pH=12时,EDTA配位滴定钙;以及酸性铬蓝K—铬黑T—萘酚绿B为指示剂于pH=10时,EDTA配位滴定钙、镁含量均具有良好地测定结果,指示剂变色敏锐、实验现象明显。
Two indicators in titration analysis of calcium and magnesium with EDTA were improved in this paper. It was proved that the new indicators had been obtained satisfaction results in the determination. The indicators＇color changes quickly and phenomena are obvious.
出处
《天津化工》
CAS
2007年第4期51-52,共2页
Tianjin Chemical Industry
关键词
滴定分析
钙
镁
EDTA
混合指示剂
titration analysis
calcium
magnesium
EDTA
mix indicator
