The Use of Multi-Walled Carbon Nanotubes a...

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Beschreibung

Multi-Walled Carbon Nanotubes (MWCNT) was used as Matrix Solid-Phase Dispersion (MSPD) sorbent for the extraction and preconcentration of four organophosphorus insecticides (i.e. malathion, malaoxon, isomalathion and fenitrothion) from four different commercial honey samples (Çaml¿belde Bal¿, Ankara Bali, Binböa Bal¿ and Balparmak Bal¿). The developed method which involves MSPD, followed by evaporation of eluate through nitrgen gas and direct Flame Ionization detector analysis, was performed by dispersing 4:1(g/g) carbon nanotubes stationary phase on spiked honey sample and elution with 8:2 (v/v) hexane:acetone. The recovery values of insectecides were: 103.3 % for malathion with % RSD of 12.1, 96.5 % for malaoxon with % RSD of 10.9, 101.2 % for fenitrothion with % RSD 9.8 and 83.6% for isomalathion with % RSD of 11.1. standard addition calibration method was carried out for the honey sample matix using the standard mixture of the insecticides and slope of curves, were stitistically compared to slope of calibration curves constructed using pure solvent. Limits of detection was 7.0 ng/g for malathion, malaoxon and fenitrothion and 33.3 ng/g for isomalathion.

Über den Autor

Mr. Njaw Njie graduated from the University of the Gambia with a Barchelor's degree of Science in Chemistry between 2000 and 2004. He then proceeded for Master's degree in Analytical Chemistry from Middle East Technical University (METU) in Ankara/Turkey between 2006 and 2008. He is currently pursuing his PhD degree in the same area from METU.

Details

Erscheinungsjahr:	2011
Fachbereich:	Populäre Darstellungen
Genre:	Chemie , Mathematik , Medizin , Naturwissenschaften , Technik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Inhalt:	124 S.
ISBN-13:	9783846515051
ISBN-10:	3846515051
Sprache:	Englisch
Einband:	Kartoniert / Broschiert
Autor:	Njie, Njaw
Hersteller:	LAP LAMBERT Academic Publishing
Verantwortliche Person für die EU:	preigu GmbH & Co. KG, Lengericher Landstr. 19, D-49078 Osnabrück, mail@preigu.de
Maße:	220 x 150 x 9 mm
Von/Mit:	Njaw Njie
Erscheinungsdatum:	21.10.2011
Gewicht:	0,203 kg