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Arsenic Speciation by Gradient Anion Exchange Narrow Bore Ion Chromatography and High Resolution Inductively Coupled Plasma Mass Spectrometry Detection by Adrian A. Ammann is a Chemistry article available to read on EtoBox.
What is Arsenic Speciation by Gradient Anion Exchange Narrow Bore Ion Chromatography and High Resolution Inductively Coupled Plasma Mass Spectrometry Detection about?
Based on gradient anion exchange chromatography (AEC), a new strategy in As-speciation was evaluated. A narrow bore chromatographic system with lower flow rates (≤300 L) well suitable for the low flow requirements of higher efficiency nebulizers was splitless coupled to a high resolution sector field ICP MS. The AEC system takes full advantage of the detector sensitivity allowing more diluted samples (50-100 times) to be injected, delivering substantially less sample matrix to the column and a lower eluent load to the plasma. The unique plasma compatibility of the NH 4 NO 3 -eluent salt used in this study enabled high linear salt ramps in gradient applications, highly reproducible retention times (±1%) and detection limits in the low ng/L range. The separation conditions were applied on two different polymeric anionexchangers: a low capacity, weakly hydrophobic material (AS11, Dionex) and a more frequently used higher capacity, higher hydrophobic material (AS7, Dionex). On both columns, As-species (As(III/V), MMA, DMA, AsB) and Cl -were separated in less than nine minutes and co-elution was circumvented by adapting the separation pH to the optimal column selectivity. The key-advant
Who reads Arsenic Speciation by Gradient Anion Exchange Narrow Bore Ion Chromatography and High Resolution Inductively Coupled Plasma Mass Spectrometry Detection?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Adrian A. Ammann
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)
- Published
- 2010
- Language
- EN
- Field
- Chemistry (Physical Sciences)