Determination of iodide and bromide by flow methods with amperometric detection
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Determination of bromide and iodide in real samples (water, pharmaceutical preparations, and biological material) was performed using modified flow injection analyses (FIA) with amperometric detection on platinum electrode. As an additional confirmation of FIA experiments, cyclic voltammetry was employed. Iodide was determined by the kinetic method, its limit of detection was 1.0 nM, and the linearity was 0.1-100 mu M. The limit of detection for bromide determination was 50.0 nM and the calibration was linear for 2.5-100 mu M and 0.1-10 mM. The relative standard deviation for 1 mu M of iodide was 3.03% and, for 5 mu M of bromide, it was 1.23% (n = 6). Both methods enable 60 analyses per hour to be performed.
Source:Journal of Analytical Chemistry, 2008, 63, 9, 907-913
- Maik Nauka/Interperiodica/Springer, New York