Related Experiment Videos
[Thallium in wine--trace element vinogram of thallium]
Zeitschrift Fur Lebensmittel-Untersuchung Und -Forschung
|June 1, 1984
Summary
Thallium (Tl), an ultra-trace element, is found in wine, with red wines containing twice the amount of Tl compared to white wines. Grape peel contributes to higher Tl levels in red wines, and proximity to industrial sites can increase Tl content.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Food Science
Context:
- Ultra-trace element Thallium (Tl) is detected in wine at low concentrations.
- Red wines exhibit higher Tl levels (0.2 µg/L) than white wines.
- Factors influencing Tl content include soil, location, fertilizers, and winemaking processes.
Purpose:
- To investigate the origin and behavior of low Thallium levels in wine.
- To correlate Tl content with grape varietals and geographical factors.
- To establish an effective analytical method for Tl determination in wine.
Summary:
- Thallium (Tl) content in wine is influenced by grape composition, with higher levels in red wine attributed to peel concentration.
- Proximity to cement plants or abandoned mines correlates with slightly elevated Tl levels in wines.
- Anodic Stripping Voltammetry (ASV) in an EDTA-based solution is an effective method for determining ultra-trace Tl in wine after H2SO4-H2O2 decomposition and Tl(III) bromide extraction.
Impact:
- Provides insights into the environmental factors affecting Thallium contamination in wine.
- Establishes a reliable analytical method for monitoring Tl in food and beverages.
- Contributes to understanding the biogeochemical cycling of Thallium in agricultural ecosystems.