Abstract
Cyanex 301 [bis(2, 4, 4-trimethylpentyl)dithiophosphinc acid] has been proposed as a selective reagent for the extractive spectrophotometric determination of copper. The molar absorptivity of Cu(II)-Cyanex 301 complex in toluene is 1.41×104l mol-1 cm-1 at 440nm. The method has been applied for the determination of copper in pharmaceutical formulations, human hair and foodstuffs.
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