Adjustment of Sulfuric Acid Content in Chromium Plating Bath

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A new catalytic kinetic method for the determination of osmium was established based on the catalytic action of Os (u2173) on the oxidative fading between arsenazo u2172 and KIO 4 in sulfuric acid medium on the hot water bath .

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Aluminium and its alloys were anodized in sulfuric acid solution and electrolytic coloured in a nickel salt bath containing tin salt as an additive .

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Sulfuric acid ammonium chloride sodium hydroxide and ethanol were selected as coagulation bath under different coagulation temperature and coagulation time to manufacture HEC membranes .

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