Abstract
A method is described for the spectrophotometric determination of up to 0.08% of phosphorus in aluminium, copper and nickel alloys, white metals, tungsten, zinc, and silver babbitts based on the extraction of the phosphovanadomolybdate complex by methyl isobutyl ketone. The matrix metals are complexed by fluoride ion and do not interfere in the procedure. The molar absorptivity is 1820 and 3110 at 425 and 400 nm respectively, with a standard deviation of ±0.5%.
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