Spectrophotometric determination of tota
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Jiao-Mai Pai; Ru Yang; Chung-Gin Hsu
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Article
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1992
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Elsevier Science
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English
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The syntheses and punficatlon of p-acetylchlorophosphonazo (CPApA) are descrrbed A method IS proposed for the spectrophotometrx determmatlon of total rare earths with CPApA m 0 2 M hydrochlonc acid medmm at theu lsosbestic point (667 nm) At this wavelength, the absorbances of equal amounts of rare e