Determination of lead in soil by graphite furnace atomic-absorption spectrometry with the direct introduction of slurries

Alan P Newman, Kenneth W Jackson

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

A simple procedure is described whereby 5–20 mg of a powdered soil are mixed with 25 ml of water and, while stirring, 20-µl aliquots of the slurry are pipetted into a graphite furnace electrothermal atomiser. Calibration with aqueous standards gives the total lead concentration of the soil. This is much simpler than the complex hydrofluoric acid digestion procedures normally required to obtain complete recoveries from soil. The over-all precision of the analysis (8% relation standard deviation) is adequate for this application, as is the sensitivity. A characteristic concentration (A= 0.0044) of 0.5 µg l–1 is equivalent to 0.62 µg g–1 soil in a typical slurry.
Original languageEnglish
Pages (from-to)261-264
Number of pages4
JournalAnalyst
Volume108
Issue number1283
DOIs
Publication statusPublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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