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New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction

A new graphene-based tetraethoxysilane-methyltrimethoxysilane sol-gel hybrid magnetic nanocomposite (Fe3O4@G-TEOS-MTMOS) was synthesised, characterized and successfully applied in magnetic solid-phase extraction (MSPE) for simultaneous analysis of polar and non-polar organophosphorus pesticides from...

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Main Authors: Rashidi Nodeh, H., Wan Ibrahim, W. A., Kamboh, M. A., Sanagi, M. M.
Format: Article
Published: Elsevier Ltd 2017
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/75909/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988662636&doi=10.1016%2fj.chemosphere.2016.09.054&partnerID=40&md5=5cc86f51bcc5b59ed266355080a886bc
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spelling my.utm.759092018-05-30T04:09:12Z http://eprints.utm.my/id/eprint/75909/ New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction Rashidi Nodeh, H. Wan Ibrahim, W. A. Kamboh, M. A. Sanagi, M. M. QD Chemistry A new graphene-based tetraethoxysilane-methyltrimethoxysilane sol-gel hybrid magnetic nanocomposite (Fe3O4@G-TEOS-MTMOS) was synthesised, characterized and successfully applied in magnetic solid-phase extraction (MSPE) for simultaneous analysis of polar and non-polar organophosphorus pesticides from several water samples. The Fe3O4@G-TEOS-MTMOS nanocomposite was characterized using Fourier transform-infrared spectroscopy, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy and X-ray diffraction. Separation, determination and quantification were achieved using gas chromatography coupled with micro electron capture detector. Adsorption capacity of the sorbent was calculated using Langmuir equation. MSPE was linear in the range 100–1000 pg mL−1 for phosphamidon and dimethoate, and 10–100 pg mL−1 for chlorpyrifos and diazinon, with limit of detection (S/N = 3) of 19.8, 23.7, 1.4 and 2.9 pg mL−1 for phosphamidon, dimethoate, diazinon and chlorpyrifos, respectively. The LODs obtained is well below the maximum residual level (100 pg mL−1) as set by European Union for pesticides in drinking water. Acceptable precision (%RSD) was achieved for intra-day (1.3–8.7%, n = 3) and inter-day (7.6–17.8%, n = 15) analyses. Fe3O4@G-TEOS-MTMOS showed high adsorption capacity (54.4–76.3 mg g−1) for the selected OPPs. No pesticide residues were detected in the water samples analysed. Excellent extraction recoveries (83–105%) were obtained for the spiked OPPs from tap, river, lake and sea water samples. The newly synthesised Fe3O4@G-TEOS-MTMOS showed high potential as adsorbent for OPPs analysis. Elsevier Ltd 2017 Article PeerReviewed Rashidi Nodeh, H. and Wan Ibrahim, W. A. and Kamboh, M. A. and Sanagi, M. M. (2017) New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction. Chemosphere, 166 . pp. 21-30. ISSN 0045-6535 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988662636&doi=10.1016%2fj.chemosphere.2016.09.054&partnerID=40&md5=5cc86f51bcc5b59ed266355080a886bc
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QD Chemistry
spellingShingle QD Chemistry
Rashidi Nodeh, H.
Wan Ibrahim, W. A.
Kamboh, M. A.
Sanagi, M. M.
New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
description A new graphene-based tetraethoxysilane-methyltrimethoxysilane sol-gel hybrid magnetic nanocomposite (Fe3O4@G-TEOS-MTMOS) was synthesised, characterized and successfully applied in magnetic solid-phase extraction (MSPE) for simultaneous analysis of polar and non-polar organophosphorus pesticides from several water samples. The Fe3O4@G-TEOS-MTMOS nanocomposite was characterized using Fourier transform-infrared spectroscopy, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy and X-ray diffraction. Separation, determination and quantification were achieved using gas chromatography coupled with micro electron capture detector. Adsorption capacity of the sorbent was calculated using Langmuir equation. MSPE was linear in the range 100–1000 pg mL−1 for phosphamidon and dimethoate, and 10–100 pg mL−1 for chlorpyrifos and diazinon, with limit of detection (S/N = 3) of 19.8, 23.7, 1.4 and 2.9 pg mL−1 for phosphamidon, dimethoate, diazinon and chlorpyrifos, respectively. The LODs obtained is well below the maximum residual level (100 pg mL−1) as set by European Union for pesticides in drinking water. Acceptable precision (%RSD) was achieved for intra-day (1.3–8.7%, n = 3) and inter-day (7.6–17.8%, n = 15) analyses. Fe3O4@G-TEOS-MTMOS showed high adsorption capacity (54.4–76.3 mg g−1) for the selected OPPs. No pesticide residues were detected in the water samples analysed. Excellent extraction recoveries (83–105%) were obtained for the spiked OPPs from tap, river, lake and sea water samples. The newly synthesised Fe3O4@G-TEOS-MTMOS showed high potential as adsorbent for OPPs analysis.
format Article
author Rashidi Nodeh, H.
Wan Ibrahim, W. A.
Kamboh, M. A.
Sanagi, M. M.
author_facet Rashidi Nodeh, H.
Wan Ibrahim, W. A.
Kamboh, M. A.
Sanagi, M. M.
author_sort Rashidi Nodeh, H.
title New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
title_short New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
title_full New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
title_fullStr New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
title_full_unstemmed New magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
title_sort new magnetic graphene-based inorganic\x96organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction
publisher Elsevier Ltd
publishDate 2017
url http://eprints.utm.my/id/eprint/75909/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988662636&doi=10.1016%2fj.chemosphere.2016.09.054&partnerID=40&md5=5cc86f51bcc5b59ed266355080a886bc
_version_ 1643657193869803520
score 13.211869

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