PMID- 17160727
OWN - NLM
STAT- MEDLINE
DCOM- 20070619
LR  - 20181113
IS  - 1053-0509 (Print)
IS  - 1053-0509 (Linking)
VI  - 17
IP  - 1
DP  - 2007 Jan
TI  - Spectrofluorimetric determination of 3-hydroxy-2-naphthoic acid by use of its 
      ternary complex with zirconium (IV) and beta-cyclodextrin: application to 
      determination in river water.
PG  - 23-8
AB  - A spectrofluorimetric method has been developed for the determination of 
      3-hydroxy-2-naphthoic acid (3H2NA) by formation of a ternary complex with 
      zirconium (IV) and beta-cyclodextrin (beta-CD). It has been observed that the 
      fluorescence intensity of 3H2NA is greatly enhanced when the ternary complex is 
      formed and is accompanied with shifts in the excitation and emission wavelengths. 
      The conditions for the formation of the ternary complex have been optimized and 
      the stoichiometry has been calculated, resulting a 1:2:1 complex (3H2NA:Zr: 
      beta-CD). The linear range was 20-2000 ng mL(-1) and the detection and 
      quantification limits calculated were 17 and 58 ng mL(-1), respectively. The 
      proposed method was applied to the determination of 3H2NA in river water. To 
      eliminate interferences an off-line solid phase extraction (SPE) procedure using 
      C18 cartridges was used. The extraction procedure was optimized and good 
      recoveries were obtained (around 100%) with relative standard deviations (RSDs) 
      of less than 5%.
FAU - Canada-Canada, F
AU  - Canada-Canada F
AD  - Department of Analytical Chemistry, University of Extremadura, 06071 Badajoz, 
      Spain. maribelro@unex.es
FAU - Rodriguez-Caceres, M I
AU  - Rodriguez-Caceres MI
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20061212
PL  - Netherlands
TA  - J Fluoresc
JT  - Journal of fluorescence
JID - 9201341
RN  - 0 (Naphthols)
RN  - 0 (beta-Cyclodextrins)
RN  - C6V6S92N3C (Zirconium)
RN  - C7S9D784HX (3-hydroxy-2-naphthoic acid)
RN  - JV039JZZ3A (betadex)
SB  - IM
MH  - Fresh Water/*analysis/chemistry
MH  - Hydrogen-Ion Concentration
MH  - Naphthols/*analysis
MH  - Spectrometry, Fluorescence/*methods
MH  - Zirconium/*chemistry
MH  - beta-Cyclodextrins/*chemistry
EDAT- 2006/12/13 09:00
MHDA- 2007/06/20 09:00
CRDT- 2006/12/13 09:00
PHST- 2006/07/25 00:00 [received]
PHST- 2006/10/30 00:00 [accepted]
PHST- 2006/12/13 09:00 [pubmed]
PHST- 2007/06/20 09:00 [medline]
PHST- 2006/12/13 09:00 [entrez]
AID - 10.1007/s10895-006-0148-y [doi]
PST - ppublish
SO  - J Fluoresc. 2007 Jan;17(1):23-8. doi: 10.1007/s10895-006-0148-y. Epub 2006 Dec 
      12.