A Comparative Study of AgX (X = Cl-, Br-, I- and N3-) Solid-Phase Reactors for Flow-Injection Determination of Cyanide in Electroplating Wastewater

In this study, a rapid flow injection-flame atomic absorption spectrometry for cyanide detection was developed. Different AgX (where X is Cl-, Br-, I- and N3-) solid-phase reagents (SPR) were tested for indirect determination of cyanide. In a single-line FIA system, the cyanide was allowed to react...

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Bibliographic Details
Published in:Analytical Sciences 2008, Vol.24(5), pp.669-672
Main Authors: NOROOZIFAR, Meissam, KHORASANI-MOTLAGH, Mozhgan, TAHERI, Aboozar, ZARE-DORABEI, Rohollah
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
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Summary:In this study, a rapid flow injection-flame atomic absorption spectrometry for cyanide detection was developed. Different AgX (where X is Cl-, Br-, I- and N3-) solid-phase reagents (SPR) were tested for indirect determination of cyanide. In a single-line FIA system, the cyanide was allowed to react with AgX SPR, which in turn changed Ag ions in AgX to silver cyanide complexes in a sodium hydroxide carrier stream. The eluent containing the analyte as silver cyanide complexes was measured by FAAS. The calibration curve was linear up to 30 mg l-1 with a detection limit of 0.05 mg l-1 for cyanides. The sampling rate and the relative standard deviation were 200 h-1, respectively. The method was applied to the determination of cyanide in electroplating wastewater.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.24.669