Study on the optimal catalytic system for rapid determination of COD
Analytical Laboratory(2001)
Abstract
An optimal catalytic digestion system for rapid determination of chemical oxygen demand(COD) was studied by orthogonal experiments. With the combined catalysts of CuSO 4, KAl(SO 4) 2 and Na 2MoO 4 in H 2SO 4 H 3PO 4 solution, the period of heating circumfluence was greatly curtailed and the cost of the determination was decreased. The relative standard deviation and recovery of such system are 1.1% and 97.7%~103.3%, respecitively.
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Key words
optimal catalytic system,rapid determination
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