Applications of enzyme-catalysed reactions in trace analysis-III Determination of silver and thiourea by their combined inhibition of invertase.
Thiourea has been found to enhance the inhibition of invertase by silver ions. The effect is applied to the determination of 1-5 x 10(-7)M silver and of 10(-7)-10(-8)M thiourea. A mechanism is suggested for the enhancement.
Mealor
D
D
Chemistry Department, The University, P.O. Box 363, Birmingham 15, U.K.
Townshend
A
A