Spectrofluorimetric determination of trace amounts of molybdenum in pig liver and mussels

Citation
Cq. Jiang et al., Spectrofluorimetric determination of trace amounts of molybdenum in pig liver and mussels, ANALYT CHIM, 439(2), 2001, pp. 307-313
Citations number
18
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICA CHIMICA ACTA
ISSN journal
00032670 → ACNP
Volume
439
Issue
2
Year of publication
2001
Pages
307 - 313
Database
ISI
SICI code
0003-2670(20010725)439:2<307:SDOTAO>2.0.ZU;2-E
Abstract
A new fluorescent reagent, 2-hydroxy-1-naphthaldehydene-8-aminoquinoline (H NAAQ), was synthesized. The fluorescent reaction of this reagent with molyb denum was studied. Based on this chelation, a highly sensitive spectrofluor imetric method was developed for determination of trace amounts of molybden um in a water-ethanol (4:1 v/v) medium at pH 9.2. Under these conditions, t he Mo-HNAAQ complex has excitation and emission maxima at 402 and 450 nm, r espectively. The linear range of the method is from 0 to 30 mug 1(-1) and t he 3 sigma detection limit is 83 ng 1(-1) of molybdenum. Interference of ot her ions was studied. It is necessary to remove the interfering cations thr ough cation exchange. The procedure can easily be carried out and affords g ood precision and accuracy. This method has been successfully applied to th e determination of molybdenum in pig liver and mussels. (C) 2001 Elsevier S cience B.V. All rights reserved.