Determining selenium in plant tissue with optimal digestion conditions
- 1 August 1990
- journal article
- other
- Published by Taylor & Francis in Communications in Soil Science and Plant Analysis
- Vol. 21 (13-16) , 1717-1726
- https://doi.org/10.1080/00103629009368335
Abstract
A procedure is described for optimizing plant tissue digestion conditions for accurate selenium (Se) analysis. Optimal concentrations of nitric acid, ceric ammonium nitrate, hydroxylamine HCl and the use of vapor trapping funnel were evaluated for total recovery of Se in NIST wheat flour reference material using atomic absorption spectrophotometry with continuous Se hydride generation. During sample digestion, excessive or insufficient amounts of nitric acid (1.02 M), ceric ammonium nitrate (6.6 x 10‐4 M), or hydroxylamine HCl (0.398 M) caused a 15–20% reduction in the total Se recovered. Additional losses up to 15% were observed in the same samples without the use of the vapor trapping funnel. These results demonstrated how digestion conditions must be optimized for precise and accurate Se analysis in plant tissue.Keywords
This publication has 10 references indexed in Scilit:
- Presence of hydroxylamine in the phosphoric acid/nitric acid/hydrogen peroxide digestion procedure for selenium determinationAnalytical Chemistry, 1988
- Single-column ion chromatography of selenite in soil extractsAnalytical Chemistry, 1986
- Digestion of plants and organic soils using nitric acid, hydrogen peroxide and UV irradiationCommunications in Soil Science and Plant Analysis, 1983
- Determination of inorganic selenium species in groundwaters containing organic interferences by ion chromatography and hydride generation/atomic absorption spectrometryAnalytical Chemistry, 1982
- Determination of trace amounts of selenium in corn, lettuce, potatoes, soybeans, and wheat by hydride generation/condensation and flame atomic absorption spectrometryJournal of Agricultural and Food Chemistry, 1981
- Preparation of biological materials for determination of selenium by hydride generation-atomic absorption spectrometryAnalytical Chemistry, 1981
- Species determination of selenium in natural watersAnalytica Chimica Acta, 1978
- 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
- Determination of sub microgram amounts of selenium in rocks by atomic-absorption spectroscopyTalanta, 1975
- The determination of selenium in soils and sediments with 3,3′-diaminobenzidineThe Analyst, 1965