Determination of lithium in wines by ion chromatography

O. Zerbinati; F. Balduzzi; V. Dell'Oro

doi:10.1016/S0021-9673(00)00261-2

Determination of lithium in wines by ion chromatography

O. Zerbinati, F. Balduzzi, V. Dell'Oro

Research output: Contribution to journal › Article › peer-review

Abstract

Lithium ion can be added as a denaturing agent to wines unsuitable for consumption. Accuracy of flame atomic emission spectroscopy with direct nebulization, which is commonly adopted for discovering illegal use of denatured wines, was found to be compromised by Na⁺, K⁺, NH₄/⁺, Mg²⁺, Ca²⁺ and ethanol contained in wine. Ion chromatography (IC) was tested in order to propose an alternative method for legal controls. Experimental design was used to investigate the influence on the accuracy of the determination of Li⁺ at ppb levels, of Na⁺ and ethanol content of wine and of fluctuations of eluent flow-rate and composition. It turned out that IC quantification of Li⁺ can be affected by eluent parameters rather than by wine composition. Since the former can be maintained under the operators control, while the latter cannot, IC was judged preferable to AES for legal controls of Li⁺ in wines. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	645-650
Number of pages	6
Journal	Journal of Chromatography A
Volume	881
Issue number	1-2
DOIs	https://doi.org/10.1016/S0021-9673(00)00261-2
Publication status	Published - 9 Jun 2000
Externally published	Yes

Keywords

Food analysis
Lithium
Metal cations
Wine

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10.1016/S0021-9673(00)00261-2

Cite this

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abstract = "Lithium ion can be added as a denaturing agent to wines unsuitable for consumption. Accuracy of flame atomic emission spectroscopy with direct nebulization, which is commonly adopted for discovering illegal use of denatured wines, was found to be compromised by Na+, K+, NH4/+, Mg2+, Ca2+ and ethanol contained in wine. Ion chromatography (IC) was tested in order to propose an alternative method for legal controls. Experimental design was used to investigate the influence on the accuracy of the determination of Li+ at ppb levels, of Na+ and ethanol content of wine and of fluctuations of eluent flow-rate and composition. It turned out that IC quantification of Li+ can be affected by eluent parameters rather than by wine composition. Since the former can be maintained under the operators control, while the latter cannot, IC was judged preferable to AES for legal controls of Li+ in wines. (C) 2000 Elsevier Science B.V.",

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TY - JOUR

T1 - Determination of lithium in wines by ion chromatography

AU - Zerbinati, O.

AU - Balduzzi, F.

AU - Dell'Oro, V.

PY - 2000/6/9

Y1 - 2000/6/9

N2 - Lithium ion can be added as a denaturing agent to wines unsuitable for consumption. Accuracy of flame atomic emission spectroscopy with direct nebulization, which is commonly adopted for discovering illegal use of denatured wines, was found to be compromised by Na+, K+, NH4/+, Mg2+, Ca2+ and ethanol contained in wine. Ion chromatography (IC) was tested in order to propose an alternative method for legal controls. Experimental design was used to investigate the influence on the accuracy of the determination of Li+ at ppb levels, of Na+ and ethanol content of wine and of fluctuations of eluent flow-rate and composition. It turned out that IC quantification of Li+ can be affected by eluent parameters rather than by wine composition. Since the former can be maintained under the operators control, while the latter cannot, IC was judged preferable to AES for legal controls of Li+ in wines. (C) 2000 Elsevier Science B.V.

AB - Lithium ion can be added as a denaturing agent to wines unsuitable for consumption. Accuracy of flame atomic emission spectroscopy with direct nebulization, which is commonly adopted for discovering illegal use of denatured wines, was found to be compromised by Na+, K+, NH4/+, Mg2+, Ca2+ and ethanol contained in wine. Ion chromatography (IC) was tested in order to propose an alternative method for legal controls. Experimental design was used to investigate the influence on the accuracy of the determination of Li+ at ppb levels, of Na+ and ethanol content of wine and of fluctuations of eluent flow-rate and composition. It turned out that IC quantification of Li+ can be affected by eluent parameters rather than by wine composition. Since the former can be maintained under the operators control, while the latter cannot, IC was judged preferable to AES for legal controls of Li+ in wines. (C) 2000 Elsevier Science B.V.

KW - Food analysis

KW - Lithium

KW - Metal cations

KW - Wine

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ER -

Determination of lithium in wines by ion chromatography

Abstract

Keywords

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