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Spectrophotometric determination of the total amount of rare-earth elements in agricultural samples with p-chloro-chlorophosphonazo

✍ Scribed by Shihe Li; Shengquan Li; Yuejun Zhang


Book ID
118996289
Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
433 KB
Volume
39
Category
Article
ISSN
0039-9140

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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