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Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection

Solid phase extraction (SPE) and dispersive solid-phase extraction (d-SPE) were compared and evaluated for the determination of Î»-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with an electron capture detector (GC-ECD). Several SPE sorbents such as graphitised carbon black...

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Main Authors:	Muhamad, H., Zainudin, B.H., Abu Bakar, N.K.
Format:	Article
Published:	2012
Subjects:	QD Chemistry
Online Access:	http://eprints.um.edu.my/6240/
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spelling	my.um.eprints.62402013-07-02T01:37:25Z http://eprints.um.edu.my/6240/ Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection Muhamad, H. Zainudin, B.H. Abu Bakar, N.K. QD Chemistry Solid phase extraction (SPE) and dispersive solid-phase extraction (d-SPE) were compared and evaluated for the determination of Î»-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with an electron capture detector (GC-ECD). Several SPE sorbents such as graphitised carbon black (GCB), primary secondary amine (PSA), C 18, silica, and florisil were tested in order to minimise fat residues. The results show that mixed sorbents using GCB and PSA obtained cleaner extracts than a single GCB and PSA sorbents. The average recoveries obtained for each pesticide ranged between 81 and 114 at five fortification levels with the relative standard deviation of less than 7 in all cases. The limits of detection for these pesticides were ranged between 0.025 and 0.05 Î¼g/g. The proposed method was applied successfully for the residue determination of both Î»-cyhalothrin and cypermethrin in crude palm oil samples obtained from local mills throughout Malaysia. 2012 Article PeerReviewed Muhamad, H. and Zainudin, B.H. and Abu Bakar, N.K. (2012) Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection. Food Chemistry, 134 (4). pp. 2489-2496. ISSN 03088146 10.1016/j.foodchem.2012.04.095
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Muhamad, H. Zainudin, B.H. Abu Bakar, N.K. Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
description	Solid phase extraction (SPE) and dispersive solid-phase extraction (d-SPE) were compared and evaluated for the determination of Î»-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with an electron capture detector (GC-ECD). Several SPE sorbents such as graphitised carbon black (GCB), primary secondary amine (PSA), C 18, silica, and florisil were tested in order to minimise fat residues. The results show that mixed sorbents using GCB and PSA obtained cleaner extracts than a single GCB and PSA sorbents. The average recoveries obtained for each pesticide ranged between 81 and 114 at five fortification levels with the relative standard deviation of less than 7 in all cases. The limits of detection for these pesticides were ranged between 0.025 and 0.05 Î¼g/g. The proposed method was applied successfully for the residue determination of both Î»-cyhalothrin and cypermethrin in crude palm oil samples obtained from local mills throughout Malaysia.
format	Article
author	Muhamad, H. Zainudin, B.H. Abu Bakar, N.K.
author_facet	Muhamad, H. Zainudin, B.H. Abu Bakar, N.K.
author_sort	Muhamad, H.
title	Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
title_short	Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
title_full	Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
title_fullStr	Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
title_full_unstemmed	Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
title_sort	comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection
publishDate	2012
url	http://eprints.um.edu.my/6240/
_version_	1643687787213357056
score	13.211869

Comparative study of different clean-up techniques for the determination of λ-cyhalothrin and cypermethrin in palm oil matrices by gas chromatography with electron capture detection

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