Applications of enzyme-catalysed reactions in trace analysis-II Determination of cyanide, sulphide, and iodine with invertase.
Methods are described for the determination of cyanide (10(-8)-10(-5)M and sulphide (10(-7)-10(-5)M) based on the de-inhibitory effect of these ions on invertase inhibited by mercury(II) or by silver. Iodine (0.1-3 mug) may be determined by its inhibition of invertase.
Mealor
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Chemistry Department, The University P.O. Box 363, Birmingham 15, U.K.
Townshend
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