✦ LIBER ✦
An improved preliminary treatment for the routine estimation of lead in wines and related products
✍ Scribed by N. Greenblau; J. P. Van Der Westhuyzen
- Publisher
- John Wiley and Sons
- Year
- 1956
- Tongue
- English
- Weight
- 295 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0022-5142
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A more rapid procedure is described for the destruction of organic matter in wines, grapes, grape must, tinned food and urine, prior to the routine estimation of lead.
The method involves the initial digestion of the material with iodine pentoxide and concentrated nitric acid, followed by evaporation to dryness, and ashing at 480°. The lead in the residue is then determined colorimetrically after extraction with dithizone in chloroform.