NDLI: Comparison of novel pyridine-functionalized mesoporous silicas for Au(III) extraction from natural samples

Content Provider	Springer Nature Link
Author	Ebrahimzadeh, Homeira Tavassoli, Najmeh Sadeghi, Omid Amini, Mostafa M. Jamali, Moein
Copyright Year	2010
Abstract	A technique for solid-phase extraction utilizing pyridine-functionalized nanoporous silica (MCM-41, MCM-48 and SBA-15) was developed for the determination of gold in different samples using flame atomic absorption spectrometry. The effects of concentration and volume of eluent, pH of the solution, flow rate of extraction, sample volume and of potentially interfering ions on the efficiency of preconcentration and recovery was investigated. The limit of detection is lower than 45 pg mL−1. Under optimal conditions, the accuracy and precision (RSD%) of the method were calculated to be >99.5% and <0.7% for the two MCMs (41 and 48) and >89.5%, and <1.5% for SBA-15, respectively. The SPE technique was used to determine the concentration of gold in natural and industrial wastewater with satisfactory results. Figure A schematic model of modified mesoporous (MCM-41, MCM-48, SBA-15) with pyridine, and adsorption of Au(III)
Starting Page	479
Ending Page	487
Page Count	9
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	172
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2010-12-21
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solid phase extraction Pyridine-functionalized mesoporous silica Py-MCM-41 Py-MCM-48 Py-SBA-15 Gold Analytical Chemistry Nanotechnology Nanochemistry Microengineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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