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ID 33037
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Author
Sabarudin, Akhmad
Oshima, Mitsuko
Ishii, Naoe
Motomizu, Shoji
Abstract

A highly sensitive fluorescence quenching method for the determination of silicate based on the formation of an ion associate between molybdosilicate and Rhodamine B (RB) in nitric acid medium was developed. A flow injection system coupled with a fluorescence detector was used for the measurement of fluorescence intensity at 560 and 580 nm as excitation and emission wavelengths, respectively. The calibration graph for Si showed a linear range of 0.1-5 ng cm(-3) with correlation coefficient of 0.9999, and the detection limit of 0.06 ng cm(-3). The proposed method was successfully applied to the determination of silicate in ultrapurified water with satisfactory results.

Keywords
ultrapurified water
ion associate
molybdosilicate
rhodamine B
flow injection
fluorescence quenching
Note
Published with permission from the copyright holder.
This is published in Talanta, 2003 Vol.60 Issue.6 pp.1277-1285
Publisher URL: http://dx.doi.org/10.1016/S0039-9140(03)00234-0
Direct access to Thomson Web of Science record
(C)2003 by Elsevier B.V.
Published Date
2003-08-29
Publication Title
Talanta
Volume
volume60
Issue
issue6
Start Page
1277
End Page
1285
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/29