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Title: Determination of trace amounts of iron by catalytic-adsorptive stripping voltammetry
Authors: Gao, Z. 
Siow, K.S. 
Keywords: Adsorptive stripping voltammetry
Iron-thiocyanate-nitric oxide complex
Issue Date: 1996
Citation: Gao, Z.,Siow, K.S. (1996). Determination of trace amounts of iron by catalytic-adsorptive stripping voltammetry. Talanta 43 (5) : 727-733. ScholarBank@NUS Repository.
Abstract: A highly sensitive and selective voltammetric procedure is described for the determination of trace amounts of iron. The procedure is based on the adsorptive collection of an iron-thiocyanate-nitric oxide complex on a hanging mercury drop electrode. The adsorbed complex catalyzes the reduction of nitrite in solution, which gives a detection limit of 40 ppt iron (30 s accumulation). The stripping current increases linearly with iron concentration up to 80 ppb. The relative standard deviations are 4.2% and 1.6% at 0.5 ppb and 40 ppb respectively. Most of the common ions, except cobalt, do not interfere with the determination of iron. The procedure is applied to determine iron in biological samples, natural waters and analytical-grade chemicals.
Source Title: Talanta
ISSN: 00399140
Appears in Collections:Staff Publications

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