Transport of nickel, cobalt, iron and chromium to the atom cell during a hydride generation process
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 121 (2) , 201-204
- https://doi.org/10.1039/an9962100201
Abstract
It is shown, by using ICP-AES, that some Ni, Co, Fe and Cr is trnsported, probably as an aerosol, with the hydrides to the atom cell during a hydride generation process. The amount of matrix elements introduced to the atom cell depends on the concentrations of the sodium tetrahydroborate and the acid used for the hydride generation. For solutions containing 5000 mg l–1 of Ni and Co, the signals obtained are equivalent to those obtained from 1–5 mg l–1 metal solutions nebulized in the ordinary way. A glass filter frit placed between the gas–liquid separator and the torch reduces the transport of metal to the plasma by 50–80%. When HGAAS is used, a decrease in sensitivity is observed for As in samples containing high concentrations of Ni and Co. This may be owing to the presence of Ni and Co in the quartz tube atomizer.Keywords
This publication has 11 references indexed in Scilit:
- Determination of selenium by hydride generation atomic absorption spectrometry: elimination of interferences from very high concentrations of nickel, cobalt, iron and chromium by complexationJournal of Analytical Atomic Spectrometry, 1995
- Determination of arsenic and tellurium by hydride generation atomic spectrometry: minimizing interferences from nickel, cobalt and copper by using an alkaline sample solutionThe Analyst, 1995
- Use of thiourea in the determination of arsenic, antimony, bismuth, selenium and tellurium by hydride generation inductively coupled plasma atomic emission spectrometryJournal of Analytical Atomic Spectrometry, 1995
- Determination of arsenic in a nickel-based alloy by flow injection hydride generation atomic absorption spectrometry incorporating continuous-flow matrix isolation and stopped-flow pre-reduction proceduresJournal of Analytical Atomic Spectrometry, 1992
- The mechanism of transition metal interference in hydride generation atomic absorption spectrometrySpectrochimica Acta Part B: Atomic Spectroscopy, 1988
- Interferences from bivalent cations in the determination of selenium by hydride-generation and atomic-absorption spectrometry A discussion of the claim that the metal ions are reduced to the metallic state by sodium borohydrideTalanta, 1986
- Mechanisms of transition metal interferences in hydride generation atomic absorption spectrometry. Part 4. Influence of acid and tetrahydroborate concentrations on interferences in arsenic and selenium determinationsJournal of Analytical Atomic Spectrometry, 1986
- Investigations on atomisation mechanisms of volatile hydride-forming elements in a heated quartz cell. Part 1. Gas-phase and surface effects; decomposition and atomisation of arsineThe Analyst, 1983
- Interference of volatile hydride-forming elements in selenium determination by atomic absorption spectrometry with hydride generationAnalytical Chemistry, 1982
- Simultaneous determination of trace concentrations of arsenic, antimony, bismuth, selenium and tellurium in aqueous solution by introduction of the gaseous hydrides into an inductively coupled plasma source for emission spectrometry. Part I. Preliminary studiesThe Analyst, 1978