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利用铜腙光度法测定电镀废水中的微量铜。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。铜含量在 0～ 2 5 μg/ 2 5mL范围内遵守比尔定律。该方法简便、快捷 ,具有良好的选择性。
Determination of trace copper in electroplating wastewater by copper hydrazone spectrophotometry. The optimal measurement wavelength was optimized. The effects of acidity, citric acid concentration, developer concentration, temperature and interfering elements on the measurement were studied. Beer’s law is obeyed in the range of 0 ~ 25 μg / 2 5mL. The method is simple, fast and has good selectivity.