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Spectrofluorometric determination of zinc with 1,5-bis(2,3-dihydroxyphenylmethylene) thiocarbohydrazone

✍ Scribed by A.M. Afonso; M. González-Dávila; J.J. Santana; F. García-Montelongo

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
434 KB
Volume
202
Category
Article
ISSN
0003-2670

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✦ Synopsis

1,5-Bis( 2,3_dihydroxyphenylmethylene) thiocarbohydrazone was synthesized; its ionization constanta are reported. A procedure ia described for the spectrofluorimetric determination of 5-546 ng ml-' zinc in 60/40 (v/v) ethanol/water medium, acetate-buffered to apparent pH 6.5 (LX= 409 nm, & ,,, = 508 nm ) . Interferences were evaluated and the procedure was applied with good results to the determination of zinc in potable waters (0.3-3 K ml-') and lubricating oils.

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