Abstract
An on-line flow-injection-microwave oven system employed to accelerate chromogenic reactions is described. Effects of microwave on chromogenic reactions between Pt(II,IV) and 5-Br-PADAT in HOAc-NaOAc media are studied respectively, and a direct spectrophotometric flow-injection determination method for Pt(II) is established. The maximum absorption wavelength is 600nm for Pt(II), and 560nm for Pt(IV). This method is applied to the determination of platinum in fresh platinum catalyst with aluminum as support.
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