Question:
Limit test for arsenic is based on _______
Limit test for arsenic is based on _______
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Associate the Gutzeit test specifically with the detection and limit testing of arsenic.
Updated On: May 6, 2025
- \( \text{Gutzeit test} \)
- \( \text{Biuret test} \)
- \( \text{Black water test} \)
- \( \text{Volhard's test} \)
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The Correct Option is A
Solution and Explanation
The limit test for arsenic, as described in pharmacopoeias, is based on the Gutzeit method. This test involves the generation of arsine gas from any arsenic present in the sample by reaction with zinc and acid. The arsine gas then reacts with mercuric chloride paper, producing a yellow stain. The intensity of this stain is compared with that produced by a standard arsenic solution.
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