Sodium formate from waste alkali liquor was analyzed by perchloric acid nonaqueous titration instead of potassium permanganate method, which caused larger deviation.
采用高氯酸非水滴定法分析废碱液中的甲酸钠，代替了误差较大的高锰酸钾法。
Chromic sulfate, sodium formate and formate acid react with hydrolysis collagen were investigated by fluorescent method to get the more evidence of understanding chrome tanned mechanics.
为了更好地了解在二氧化碳超临界流体下铬鞣机理 ，采用对比实验法对常规铬鞣的基本原理进行了印证性研究。
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