Isotopic lead measurements in wine and edible oil using inductively coupled plasma with mass spectrometry

Balabanova, Biljana and Mitrev, Sasa and Ivanova, Violeta and Gulaboski, Rubin (2015) Isotopic lead measurements in wine and edible oil using inductively coupled plasma with mass spectrometry. Yearbook, Faculty of Agriculture, Goce Delcev University. ISSN 1857- 8608

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Abstract

Lead isotope ratios provide analytical information related to the source of lead contamination in naturally occurring samples. On the other hand, these measurements can provide useful information for routine means of “fingerprinting” the components grown in different habitats. Small Pb isotope abundance variation occurs in nature and the isotopic composition of lead in the environment is dependent on the local pollution sources. In this study, inductively coupled plasma with mass spectrometry (ICP-MS) was used to investigate whether this chemical application can offer a reliable and practical solution to the problem of the polyatomic overlap in the presence of organic based matrix samples. The study summarizes the instrument optimization procedure for Pb isotope measurements in wine and edible oil samples. Also, the isotopic ratios were presented for samples from same and from different geographical region. The total lead concentration in wine samples ranges from 3.74-16.3 μg/L, not exceeding the maximum allowable concentrations of lead in wine (200 μg/L). Values for the isotopes concentration ratios 207Pb/206Pb and 208Pb/206Pb ranges from 0.98-1.12 and 2.22-2.99, respectively. The total lead content in edible oil samples ranges from 18.3 to 29.6 μg/kg, not exceeding the maximum allowable concentrations of lead in edible oil (100 μg/kg). Statistically significant differences between the values for the isotopes concentration ratios 207Pb/206Pb и 208Pb/206Pb were determined for samples from different geographic origin.

Item Type: Article
Subjects: Natural sciences > Chemical sciences
Agricultural Sciences > Other agricultural sciences
Divisions: Faculty of Agriculture
Depositing User: Biljana Balabanova
Date Deposited: 11 Feb 2016 15:17
Last Modified: 11 Feb 2016 15:17
URI: http://eprints.ugd.edu.mk/id/eprint/15400

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