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A novel flow injection (FI) system for chemical oxygen demand (COD) determination is evaluated. Manganese (VII) is used as oxidant. FI microwave solid phase extraction system by activated carbon (AC) was employed. FI system involves a digestion circuit, placed in a home MW oven, coupled to inductively coupled plasma-optical emission spectrometry. Manganese (II) was determined after the reduction of...
The present paper evaluates the applicability of a new FIA system for COD determination. The new system, flow injection microwave solid phase extraction by means of activated carbon (FI-MW-SPE), consists of a digestion circuit, placed in a home MW oven, coupled to an ICP-OES spectrophotometer. Doehlert experimental design was used to speed up the optimization of different experimental variables studied...
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