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Title: Spectrofluorometric determination of zinc with 1,5-bis(2,3-dihydroxyphenylmethylene) thiocarbohydrazone
Authors: Afonso, A. M.
González-Dávila, M. 
Santana, J. J. 
García-Montelongo, F.
UNESCO Clasification: 2301 química analítica
Keywords: Spectrofluorimetry
Issue Date: 1987
Publisher: 0003-2670
Journal: Analytica chimica acta (Print) 
Abstract: 1,5-Bis(2,3-dihydroxyphenylmethylene)thiocarbohydrazone was synthesized; its ionization constants are reported. A procedure is described for the spectrofluorimetric determination of 5–540 ng ml−1 zinc in 60/40 (v/v) ethanol/water medium, acetate-buffered to apparent pH 6.5 (λex=400 nm, λem=508 nm). Interferences were evaluated and the procedure was applied with good results to the determination of zinc in potable waters (0.3–3 μg ml−1) and lubricating oils.
ISSN: 0003-2670
DOI: 10.1016/S0003-2670(00)85916-4
Source: Analytica Chimica Acta [ISSN 0003-2670], v. 202, p. 207-213
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