经过实验研究，创建了液体钙指示剂的使用方法并得出了固体钙指示剂的最佳使用条件，有利于改进了高校分析化学实验的教学效果。
This paper studied the experimental condition of calconcarboxylic acid, instituted the method of using liquid calconcarboxylic acid, and obtained the optimum condition of solid calconcarboxylic acid.
应用于EDTA滴定钙镁时，该探头能灵敏地响应酸性铬蓝K萘酚绿B混合指示剂的颜色变化，从而实现了自动光度滴定。
The photometric probe is sensitive to the color change of acid chrome K and naphthol green B mixed indicator when Ca 2+ and Mg 2+ are titrated with EDTA.
提出用钙试剂羧酸钠作指示剂络合滴定法测定降水中钙离子，在自然条件下终点的观察即能顺利进行。
Using the ca reagent carboxylic acid na as the indicator for the determination of calcium ion in the rain was reported. The whole experiment can be carried out under the natural condition.
中文名称：钙指示剂；酸性媒介黑R；铬蓝黑R；依来铬蓝黑R；酸性铬蓝黑R；铬蓝黑 R；酸性媒介黑 R；酸性铬蓝黑 R 英文名称：Acid mordant black R； Eriochrome blue black R； 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-, monosodium salt； C.I. Mordant black 17； 3-hydroxy-4-(2-hydroxy-1-naphthylazo)-1-naphthalenesulfonic aci sodium salt； 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-1-naphthalenesulfonic aci monos； 3-hydroxy-4-(2-hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid, sodium salt；calcon-carboxylic acid title
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