colorimetric study 比色分析
The study directly used urease to detect lead and cadmium concentrations in pretreatment solutions of food samples by colorimetric method and got good results.
研究运用脲酶比色法直接检测食品样品预处理液中的铅镉重金属，得到了良好的效果。
This is to report the results of a kinetic study of the polymerization of monosilicic acid by the use of molybdosilicic acid colorimetric method.
利用这个方法，确定单硅酸聚合反应的初速度对其自身浓度是二级反应。
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