Autentification of geografical origin of wines by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES)

Abstract

This paper presents the results of tests carried out in order to validate trace elements analysis of wines by ICP-AES. Studies were carried out by atomic emission spectrometry with inductively bound argon plasma at ICPE-9000 instrument (ICP-AES, Shimadzu Co., Japan). We used standard for ICP, Fluka TraceCERT-ISO/IEC 17027, ISO Guide 34 (Sigma-Aldrich GmbH). For preparation of calibration solutions, water and nitric acid class TraceSELECT Ultra were used. For the multi-elemental analysis of wine two sets of standards were used: series (1), including trace elements: zinc, copper, arsenic, lead, cadmium, iron, aluminum, etc., and series (2), including macro-elements sodium, potassium, calcium, magnesium, lithium. For the first series, the multi-elemental standard is prepared with a 5% solution of ethanol, and for the second series (2) the influence of alcohol is not taken into account, since a significant dilution of the samples (25-100 times) negates its effect.