New magnetic graphene-based inorganic-organic 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...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier
2017
|
| Subjects: |
| _version_ | 1796861526393487360 |
|---|---|
| author | Nodeh, Hamid Rashidi Wan Ibrahim, Wan Aini Kamboh, Muhammad Afzal Sanagi, Mohd. Marsin |
| author_facet | Nodeh, Hamid Rashidi Wan Ibrahim, Wan Aini Kamboh, Muhammad Afzal Sanagi, Mohd. Marsin |
| author_sort | Nodeh, Hamid Rashidi |
| collection | ePrints |
| 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. |
| first_indexed | 2024-03-05T19:57:44Z |
| format | Article |
| id | utm.eprints-66528 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:57:44Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | utm.eprints-665282017-10-08T03:14:52Z http://eprints.utm.my/66528/ New magnetic graphene-based inorganic-organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction Nodeh, Hamid Rashidi Wan Ibrahim, Wan Aini Kamboh, Muhammad Afzal Sanagi, Mohd. Marsin Q Science 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 2017-01-01 Article PeerReviewed Nodeh, Hamid Rashidi and Wan Ibrahim, Wan Aini and Kamboh, Muhammad Afzal and Sanagi, Mohd. Marsin (2017) New magnetic graphene-based inorganic-organic 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 http://dx.doi.org/10.1016/j.chemosphere.2016.09.054 DOI:10.1016/j.chemosphere.2016.09.054 |
| spellingShingle | Q Science Nodeh, Hamid Rashidi Wan Ibrahim, Wan Aini Kamboh, Muhammad Afzal Sanagi, Mohd. Marsin New magnetic graphene-based inorganic-organic sol-gel hybrid nanocomposite for simultaneous analysis of polar and non-polar organophosphorus pesticides from water samples using solid-phase extraction |
| title | New magnetic graphene-based inorganic-organic 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-organic 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-organic 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-organic 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-organic 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 organic sol gel hybrid nanocomposite for simultaneous analysis of polar and non polar organophosphorus pesticides from water samples using solid phase extraction |
| topic | Q Science |
| work_keys_str_mv | AT nodehhamidrashidi newmagneticgraphenebasedinorganicorganicsolgelhybridnanocompositeforsimultaneousanalysisofpolarandnonpolarorganophosphoruspesticidesfromwatersamplesusingsolidphaseextraction AT wanibrahimwanaini newmagneticgraphenebasedinorganicorganicsolgelhybridnanocompositeforsimultaneousanalysisofpolarandnonpolarorganophosphoruspesticidesfromwatersamplesusingsolidphaseextraction AT kambohmuhammadafzal newmagneticgraphenebasedinorganicorganicsolgelhybridnanocompositeforsimultaneousanalysisofpolarandnonpolarorganophosphoruspesticidesfromwatersamplesusingsolidphaseextraction AT sanagimohdmarsin newmagneticgraphenebasedinorganicorganicsolgelhybridnanocompositeforsimultaneousanalysisofpolarandnonpolarorganophosphoruspesticidesfromwatersamplesusingsolidphaseextraction |