A micro-flow-batch analyzer with solenoid micro-pumps for the photometric determination of iodate in table salt

In this study, a micro-flow-batch analyzer (μFBA) with solenoid micro-pumps for the photometric determination of iodate in table salt is described. The method is based on the reaction of iodate with iodide to form molecular iodine followed by the reaction with N,N-diethyl-p-phenylenediamine (DPD). T...

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Bibliographic Details
Published in:Talanta (Oxford) 2012-10, Vol.100, p.308-312
Main Authors: Lima, Marcelo B., Barreto, Inakã S., Andrade, Stéfani Iury E., Almeida, Luciano F., Araújo, Mário C.U.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Food Analysis - instrumentation
Iodate
Iodates - analysis
Iodized salt
Micro-flow-batch analyzer
Microtechnology - instrumentation
Photometry - instrumentation
Sodium Chloride, Dietary - analysis
Spectrometric and optical methods
Spectrophotometry
Urethane–acrylate resin
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Summary:In this study, a micro-flow-batch analyzer (μFBA) with solenoid micro-pumps for the photometric determination of iodate in table salt is described. The method is based on the reaction of iodate with iodide to form molecular iodine followed by the reaction with N,N-diethyl-p-phenylenediamine (DPD). The analytical signal was measured at 520nm using a green LED integrated into the μFBA built in the urethane–acrylate resin. The analytical curve for iodate was linear in the range of 0.01–10.0mgL−1 with a correlation coefficient of 0.997. The limit of detection and relative standard deviation were estimated at 0.004mgL−1 and
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2012.07.068