Determination of Lead in Wine by Graphite Furnace Atomic Absorption Spectrophotometry: Interlaboratory Study

Paul A. Brereton*, Paul Robb, Christine M. Sargent, Helen M. Crews, Roger Wood

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

An interlaboratory study of a graphite furnace atomic absorption spectrophotometry (GFAAS) method for the determination of lead in wine was conducted. Seventeen laboratories from France, United States, and the United Kingdom, using a variety of GFAAS instruments, took part in the study. The method incorporated a novel matrix-matching procedure to minimize matrix effects between standards and samples. Six wine test materials were prepared and sent to participants as 12 blind duplicate or split level samples. There was good agreement between results obtained from participants and target values (24-279 μg/L) obtained with an inductively coupled plasma-mass spectrometry method. The precision of the GFAAS method was well within the range predicted by the Horwitz equation for the 6 test materials analyzed. Repeatability standard deviations ranged from 3 to 17%. Reproducibility standard deviations were in the range of 10 to 30%. The method is recommended for use for official purposes.

Original languageEnglish
Pages (from-to)1287-1297
Number of pages11
JournalJournal of AOAC International
Volume80
Issue number6
DOIs
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science
  • Environmental Chemistry
  • Agronomy and Crop Science
  • Pharmacology

Fingerprint

Dive into the research topics of 'Determination of Lead in Wine by Graphite Furnace Atomic Absorption Spectrophotometry: Interlaboratory Study'. Together they form a unique fingerprint.

Cite this