[Thallium in wine--trace element vinogram of thallium].
The ultra trace element Thallium is regularly found in very low quantities in wine, in red wines with 0.2 micrograms T1/1 about twice as much as in white wines. Certain hints the origin and behaviour of such low T1-contents can be derived from additional investigations (soil, location, fertilizer, influence of wine making). A correlation between T1 and K is known, but above that it can be shown, that similarly to Rb certain parts of the grape (grape, flesh, peel) are richer in T1 and that thereby the higher content of T1 in red wines can be explained. Slightly higher T1-levels are found in wines which grow next to cement plants or on abandoned mines. The Anodic Stripping Voltammetry in EDTA-containing base solution has proved effective for the determination of very low levels in the investigated samples. Wine and similar samples are decomposed with H2SO4-H2O2. After extraction as T1(III) bromide Thallium is measured by anodic-stripping-voltammetry. The preceding separation of T1 from soil samples or the like is achieved by evaporation analysis.
D004563:Electrochemistry; D005638:Fruit / Q000032:analysis; D008372:Manure / Q000032:analysis; D012413:Rubidium / Q000032:analysis; D013793:Thallium / Q000032:analysis*; D014131:Trace Elements / Q000032:analysis; D014920:Wine / Q000032:analysis*; D015003:Yeasts / Q000032:analysis
D008372:Manure; D014131:Trace Elements; D013793:Thallium; D012413:Rubidium
Thallium in Wein--Spurenelement-Vinogramm des Thalliums.