摘要
本文研究了新显色剂与Cu2+的显色反应。结果表明,在PH为10的硼砂-氢氧化钠缓冲溶液中该显色剂与Cu2+能形成一种稳定的红色络合物,其最大吸收波长位于520nm处,摩尔吸收系数为4.48×104L.mol-1.cm-1,铜浓度在3-10ug/25ml范围内服从比尔定律。该方法具有良好的选择性和灵敏度,在NaF和NaAc存在下,可直接测定电镀废水中的微量铜,结果满意。
This paper studies the color reaction between the new color-producing reagent and Cu^2＋.its can form a kind of stable red complex compound in the buffer solution of borax-sodium hydroxide with pH=10.which the biggest absorption wavelengh lies 520nm and mol absorption coefficient is 4.48×10^4L.mol^-1.cm^-2.its obey Beer＇s law within the copper scope of 3-10ug/25ml. Under the existing of NaF and NaAc, the minim Cu in electroplating effluent can be determined direct. The result shows that the method possess good selectivity and sensitivity.
出处
《科技信息》
2010年第11期387-387,384,共2页
Science & Technology Information
关键词
显色剂
CU2+
电镀废水
Color-producing reagent
Cu^2＋
Electroplating effluent
