University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Geological -> mineral -> leachate

Citations 1

"Determination Of Cyanide In Mineral Leachates By Flow Injection Analysis Combined With Spectrophotometry"
Fenxi Huaxue 1996 Volume 24, Issue 7 Pages 798-801
Wang, J.W.;Min, M.

Abstract: Portions (50 µL) of standard cyanide (I) solutions were injected into a carrier stream of 15 mM copper/ammonia complex ion (containing copper citrate, NH4Cl and ammonia water, pH 10.5) at 2.4 ml/min and mixed in a reaction coil (60 cm x 0.5 mm i.d.) and the colored products were detected at 620 nm. Most foreign ions were tolerated. The calibration graph was linear from 10^-70 mM I. The method was applied to the analysis of mineral leachates with RSD (n = 4) of 0.77-2.4%. Results compared well with those obtained by complexometry. Sampling frequency was 160 runs per h.
Cyanide Spectrophotometry Interferences Method comparison Complexation