Authors: Angel Alonso M Jesús Almendral Yolanda Curto M José Porras
Publish Date: 2003/11/10
Volume: 143, Issue: 4, Pages: 217-220
Abstract
A flowinjection procedure for the determination of copper in waste water is described The procedure is based on the formation of an ionpair between tetrabutylammonium and the tetrathiocyanatocuprateII anion This ionpair is extracted with chloroform and the absorbance of the organic phase is measured at 485 nm Concentrations of copper ≥04 mg L−1 can be detected with a linear application range of between 05 and 25 mg L−1 a relative standard deviation of 23 08 mg L−1 n=10 and a sampling frequency of 30 h−1 Under the proposed working conditions only NiII and PdII interfere at molar ratios NiII/CuII ≥ 50 and PdII/CuII ≥ 100
Keywords: