[Spectrophotometric determination of trace copper in electroplating wastewater].
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)6N4-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 micrograms.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.
Huang
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Institute of Environmental Eng. and Chemical Hi-tech, Xiangtan Polytechnic University, 411201 Xiangtan.
Xia
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C
He
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X
D003300:Copper / Q000032:analysis*; D004595:Electroplating; D004787:Environmental Pollution / Q000032:analysis; D007202:Indicators and Reagents; D007220:Industrial Waste / Q000032:analysis*; D012680:Sensitivity and Specificity; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007202:Indicators and Reagents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D003300:Copper