摘要
在三乙醇胺的存在下,以含定量钙的稀乙酸浸取试样,pH值为13的氢氧化钾介质中,以钙黄绿素-百里香酚酞为混合指示剂,EDTA容量法测定氟石中的碳酸钙量.此法简便,快速,准确度高,重复性好.
This article puts forward a simple, quick, accurate and easily repeated method of measuring the quantity of Calcium Carbonate in Fluoride by Means of EDTA Capacity, in which immersed indense Acetic Acid is taken as the sample in Caustic potash medium with pH as 13 under the existence of Triethanolamine, and Calcein—Thmolphalein is taken as the mixed indicator.
出处
《西北民族大学学报（自然科学版）》
2004年第3期19-21,共3页
Journal of Northwest Minzu University(Natural Science)
关键词
EDTA容量法
氟石
碳酸钙
Means of EDTA Capacity
Calcium Fluoride
Calcium Carban
