Copper sulfate in acid copper plating bath was determined by spectrophotometry with EDTA as chromogenic agent.
用EDTA作显色剂，通过光度法测定酸性镀铜液中硫酸铜的含量。
Rhodium in rhodium plating bath was determined by spectrophotometry with sodium hypochlorite as chromogenic agent.
用次氯酸钠作显色剂光度测定镀铑溶液中的铑。
Rhodium in rhodium plating bath was determined by spectrophotometric method using potassium iodine and stannous chloride as chromogenic agent .
以碘化钾和氯化亚锡作显色剂，用光度法测定镀铑溶液中的铑。
Optimum measuring wavelength was selected. The effect of acidity, concentration of chromogenic agent, and interfering elements on the measurement was studied.
优选出最佳的测量波长，研究了酸度、显色剂浓度及干扰元素对测定的影响。
The effects of measuring wave length, addition of chromogenic agent, chromogenic media, acidity, temperature, time and interfering elements on the measured results were studied.
研究了测量波长、色介质、度、色剂加入量、度、间及干扰元素等对测量结果的影响。
Methods Alendronate sodium was determinated by colorimetry and ninhydrin ethanolic solution was used as chromogenic agent in alakaline condition and detection wavelength was at 568.
方法在碱性条件下，以（水合）茚三酮乙醇溶液为显色剂，采用比色法测定，检测波长为568。
Optimum measuring wave length was selected. The effect of acidity, concentration of citric acid and chromogenic agent, temperature and interfering elements on the measurement was studied.
优选出最佳测量波长，研究了酸度、柠檬酸浓度、显色剂浓度、温度及干扰元素对测量的影响。
Optimum measuring wave length was selected. The effect of acidity, concentration of citric acid and chromogenic agent, temperature and interfering elements on the measurement was studied.
优选出最佳测量波长，研究了酸度、柠檬酸浓度、显色剂浓度、温度及干扰元素对测量的影响。
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