Zhong Yi-hui, Huang Qi-lin, Zhang Xin, Huang Zhang-jie, Hu Qiu-feng, Yang Guang-yu
Department of Chemistry, Yuxi Teacher's College, Yuxi 653100, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2007 Feb;27(2):360-3.
Based on the color reaction of 2-(2-quinolinylazo)-5-diethylaminoaniline (QADEAA) with palladium(II) and the solid phase extraction of its colored complex with MCI-GEL reversed phase cartridge, a new method for the determination of trace palladium was established. In the presence of 0.2-2.0 mol x L(-1) of hydrochloric acid solution and CTMAB medium, QADEAA reacts with palladium(II) to form a stable 2:1 complex. The colored complex can be enriched by MCI-GEL reversed phase cartridge, and the retained chelates was then eluted by acetone. The eluant was determined by spectrophotometry at 615 nm. Beer's law is obeyed in the range of 0.01-1.5 mg x L(-1). This method was applied to the determination of palladium with good results.
基于2-(2-喹啉基偶氮)-5-二乙氨基苯胺（QADEAA）与钯（II）的显色反应及其有色配合物用MCI-GEL反相柱进行固相萃取，建立了一种测定痕量钯的新方法。在0.2 - 2.0 mol·L⁻¹盐酸溶液和CTMAB介质存在下，QADEAA与钯（II）反应形成稳定的2:1配合物。该有色配合物可用MCI-GEL反相柱富集，保留的螯合物再用丙酮洗脱。洗脱液在615 nm处用分光光度法测定。在0.01 - 1.5 mg·L⁻¹范围内符合比尔定律。该方法用于钯的测定，结果良好。
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