VLD 421: Veterinary Clinical Biochemistry and Laboratory Diagnosis-II (0+1)

DETECTION OF ZINC

Aim

• To detect presence of zinc in biological material.

Reagents required

• 10% ammonium carbonate
• 20% amm0nium sulfide
• 15% potassium iodide

Procedure

Test	Procedure	Inferences
Test1	1 ml of test solution + a drop of 10% ammonium carbonate	Appearance of white colour / precipitate
Test2	1 ml of test solution + a drop of 20% ammonium sulfide	Appearance of white colour; soluble in excess.
Test3	1ml of test solution + a drop of 15% potassium iodide solution	No reaction.