|Title:||Spectrofluorometric determination of zinc with 1,5-bis(2,3-dihydroxyphenylmethylene) thiocarbohydrazone||Authors:||Afonso, A. M.
Santana, J. J.
|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.||URI:||http://hdl.handle.net/10553/47196||ISSN:||0003-2670||DOI:||10.1016/S0003-2670(00)85916-4||Source:||Analytica Chimica Acta [ISSN 0003-2670], v. 202, p. 207-213|
|Appears in Collections:||Artículos|
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