Solid phase extraction of ultra-trace amounts of Ag+ by using octadecyl silica membrane disks modified with a new fulvalen derivative

Citation
L. Hajagha-babaei et al., Solid phase extraction of ultra-trace amounts of Ag+ by using octadecyl silica membrane disks modified with a new fulvalen derivative, ANAL SCI, 17(11), 2001, pp. 1305-1308
Citations number
28
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL SCIENCES
ISSN journal
09106340 → ACNP
Volume
17
Issue
11
Year of publication
2001
Pages
1305 - 1308
Database
ISI
SICI code
0910-6340(200111)17:11<1305:SPEOUA>2.0.ZU;2-F
Abstract
A simple method for the rapid extraction and determination of ultra-trace a mounts of Ag+ ions using octadecyl-bonded silica membrane disks modified wi th a recently synthesized fulvalen (tetramethyltetrathiafulvalen) (TMTTF) a nd graphite furnace atomic absorption spectrometry is presented. The extrac tion efficiency and influence of the flow rate, pH, nature of the counter i on and type and the least amount of eluent for the stripping of Ag+ from di sks and breakthrough volume were evaluated. The maximum capacity of the mem brane disks modified by 5 mg of TMTTF used was found to be 482 +/- 6 mug Ag +. The detection limit of the proposed method is 1.0 ng/dm(3). The method w as applied to the recovery of Ag+ ions from different synthetic and water s amples.