|
authors |
Verissimo, MIS; Gomes, MTSR |
|
journal |
ANALYTICA CHIMICA ACTA |
|
author keywords |
bulk acoustic wave sensor; aluminium; drinking water |
|
keywords |
COMPLEXING RESIN; CHELATING RESINS; UV-IRRADIATION; METAL-IONS; PRECONCENTRATION; SPECTROMETRY; SPECIATION; INJECTION; COLUMN; BRAIN |
|
abstract |
A new methodology based on an inexpensive aluminium acoustic wave sensor is presented. Although the aluminium sensor has already been reported, and the composition of the selective membrane is known, the low detection limits required for the analysis of drinking water, demanded the inclusion of a preconcentration stage, as well as an optimization of the sensor. The necessary coating amount was established, as well as the best preconcentration protocol, in terms of oxidation of organic matter and aluminium elution. from the Chelex-100. The methodology developed with the acoustic wave sensor allowed aluminium quantitation above 0.07 mg L(-1). Several water samples from Portugal were analysed using the acoustic wave sensor, as well as by UV-vis spectrophotometry. Results obtained with both methodologies were not statistically different (alpha = 0.05), both in terms of accuracy and precision. This new methodology proved to be adequate for aluminium quantitation in drinking water and showed to be faster and less reagent consuming than the UV spectrophotometric methodology. (C) 2008 Elsevier B.V. All rights reserved. |
|
publisher |
ELSEVIER SCIENCE BV |
|
issn |
0003-2670 |
|
year published |
2008 |
|
volume |
617 |
|
issue |
01-fev |
|
beginning page |
162 |
|
ending page |
166 |
|
digital object identifier (doi) |
10.1016/j.aca.2007.12.034 |
|
web of science category |
Chemistry, Analytical |
|
subject category |
Chemistry |
|
unique article identifier |
WOS:000256601000020
|
|
link |
http://dx.doi.org/10.1016/j.aca.2007.12.034
|
