Spectrophotometric determination of cyanide by chromogenic disulfide in water using micellar catalysis |
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| Authors: | A A Druzhinin I A Lozanov M Yu Prosvetova K V Veksler |
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| Institution: | 1.Federal State Enterprise 27 Nauchniy Tsentr MO RF,Moscow,Russia;2.Federal State Unitary Enterprise GosNII Khimanalit,St. Petersburg,Russia |
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| Abstract: | A spectrophotometric method is developed for the determination of cyanide in aqueous solutions using chromogenic disulfide
4,4′-2bis(1-hydroxy-3,6-disulfo-8-chloro-2-naphthylazo)diphenyldisulfide (BAS-chlorine) in the presence of cetyltrimethylammonium chloride (CTMAC). The use of CTMAC allows diminishing the limit of detection for the spectrophotometric determination of cyanide to (7.2
± 0.3) ng/mL (p = 0.95, n = 5, RSD = 29%). |
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