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ID 33019
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Author
Sabarudin, A.
Lenghor, N.
Liping, Y.
Furusho, Y.
Motomizu, Shoji
Abstract

An automated sequential-injection online preconcentration system was developed for the determination of lead by inductively coupled plasma - atomic emission spectrometry (ICP-AES). The preconcentration of lead was performed with a minicolumn containing a lead-selective resin, Analig Pb-01, which was installed between a selection and a switching valve. In an acidic condition ( pH 1), lead could be adsorbed on the resin. The concentrated lead was afterward eluted with 25 mu L of 0.06 M nitrilotriacetic acid (NTA) solution ( pH 9) and was subsequently transported into the nebulizer of ICP-AES for quantification. The selectivity of the resin toward lead was examined using a solution containing a mixture of 61 elements. When a sample volume of 5 mL was used, the quantitative collection of lead ( >= 97%) was achieved, along with an enrichment factor of 19, a sampling frequency of 12 samples hr(-1), a detection limit of 70 pg mL(-1), and a lowest quantification limit of 100 pg mL(-1). The linear dynamic range was 0.1 to 5 ng mL(-1), and the relative standard deviation (n = 9) was 0.5% at a 5 ng mL(-1) Pb level. The detection limit of 30 pg mL(-1) and lowest quantification limit of 50 pg mL(-1) could be achieved when 10 mL of sample volume was used. The accuracy of the proposed method was validated by determining lead in the standard reference material of river water (SLRS-4), and its applicability to the determination of lead in environmental river water samples was demonstrated.

Keywords
nline prdetermination of lead
ICP-AES
oeconcentration
Pb-selective resin
sequential injection
Note
Published with permission from the copyright holder.
This is published in Spectroscopy Letters, 2006 Vol.39 Issue.6 pp.669-682
Publisher URL: http://dx.doi.org/10.1080/00387010600854345
Direct access to Thomson Web of Science record
(C)2006 by TAYLOR & FRANCIS INC
Published Date
2006-12-01
Publication Title
Spectroscopy Letters
Volume
volume39
Issue
issue6
Start Page
669
End Page
682
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/30