摘要
在表面活性剂CPB和乳化剂OP存在下 ,利用二溴羟基苯基荧光酮 (DBH PF)与铜 (Ⅱ )显色反应 ,建立了测定微量Cu(Ⅱ )的光度法。实验结果表明 ,在pH =5 4的六次甲基四胺 盐酸缓冲溶液中 ,DBH PF与Cu(Ⅱ )生成紫红色的络合物 ,最大吸收波长为 5 40nm ,表观摩尔吸光系数为 1 8× 10 5,Cu(Ⅱ )的质量浓度在 0 0～ 9 0 μg·2 5mL-1范围内符合比耳定律。结合N53 0 N510 混合萃取分离可准确测定电镀废水中微量铜。
In the presence of CPB and OP, the chromogenic reaction of DBH-PF with Cu( II ) was studied. The results show that the purple micelle reaction has high sensitivity in the medium of (CH2)(6)N-4-HCl(pH = 5.4) buffered solution, the molar absorptivity is 1.8 X 10(5) L(.)mol(-1.)cm(-1), and Beer's law is obeyed for Cu( II ) in the range of 0.0-9.0 mug(.)25 mL(-1) at 540 nm. Combined with solvent extraction separation, the method has been applied to the determination of trace Cu in electroplating wastewater with satisfactory results.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2001年第4期529-530,共2页
Spectroscopy and Spectral Analysis
基金
湖南省科技攻关项目 (0 1 0 962 54)子课题
