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  • Title: Spectrophotometric determination of micro amounts of cadmium in waste water with cadion and triton X-100.
    Author: Chung-Gin H, Chao-Sheng H, Ji-Hong J.
    Journal: Talanta; 1980 Aug; 27(8):676-8. PubMed ID: 18962757.
    Abstract:
    A spectrophotometric method for determination of micro amounts of cadmium in waste water with Cadion and Triton X-100 is described. The interference of foreign ions can be eliminated by masking with an ascorbic acid-Rochelle salt-potassium cyanide-potassium fluoride mixture. After demasking with formalin, cadmium is determined directly in aqueous solution without separation. Beer's law is obeyed for 0-8 mug of Cd in 25 ml of solution. The method is more sensitive than the dithizone method, its apparent molar absorptivity at 480 nm being 1.19 x 10(5) 1. mole(-1). cm(-1). Results obtained by using the proposed method on waste water samples agree well with those obtained by atomic-absorption spectrophotometry.
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