Determination of nonmetals by atomic absorption spectrophotometry
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2018, Chemical Engineering JournalCitation Excerpt :Moreover, these are exhibited expensive apparatus, costly maintenance, multi-step processes, and complicated sample preparation, including pre-concentration procedures. Several spectrophotometric methods for the determination of arsenic have been reported based on a molybdenum blue complex [18,19], diethyldithiocarbamate complex [20,21] and molybdate–rhodamine B complex [22]. Although the detection limits of these methods are low enough to measure 0.01 mg/L of arsenic, however; there is a room to improve the methods from the stand point of easy-to-use in the developing countries.
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2000, Analytica Chimica ActaCitation Excerpt :In this work, we propose a simple indirect reversed flow injection atomic absorption spectrometric determination of iodide. A common redox reaction of metal ions involves the reduction of Cr(VI) to Cr(III) by iodide in acid medium [23]. The Cr(III) formed was retained quantitatively on-line on the poly(aminophosphonic acid) (PAPhA) chelating resin [24–26], while the unretained chromium (unreduced Cr(VI)) was measured by flame atomic absorption spectrometry (FAAS).