Zinc granules are used in limit test of arsenic
Answers
Answer:
It is also called as Gutzeit test and requires special apparatus. Arsenic, present as arsenic acid in the sample is reduced to arsenious acid by reducing agents like potassium iodide, stannous acid, zinc, hydrochloric acid, etc.
Answer:
Gutzeit test Zinc granules are used in limit test of arsenic.
Explanation:
The Gutzeit test is a toxicology test for arsenic that is based on the formation of arsine (as in the Marsh test) and the production of a brown stain on filter paper moistened with mercuric chloride solution by the arsine.
Sanger and Black's contribution to the Gutzeit method is the use of long, narrow paper, which allows gas flow to be directed along it and the product of the reaction used as analytic signal to deposit almost exclusively in the surface layers of the paper, resulting in a quantitative analytic signal.