Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector
A gas chromatography (GC) method has been developed to analyze simultaneously separate formulations of Diazinon, Malathion and Quinalphos with the internal standard method. A mixture of pure standard solution spiked with Chlorpyrifos as the internal standard and diluted with methanol was sonicated t...
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2023
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| _version_ | 1833409719784439808 |
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| author | Asha K.L. Tan G.H. Chai M.K. |
| author2 | 16240801400 |
| author_facet | 16240801400 Asha K.L. Tan G.H. Chai M.K. |
| author_sort | Asha K.L. |
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| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | A gas chromatography (GC) method has been developed to analyze simultaneously separate formulations of Diazinon, Malathion and Quinalphos with the internal standard method. A mixture of pure standard solution spiked with Chlorpyrifos as the internal standard and diluted with methanol was sonicated to homogenize the solutions. A 2?L volume of the mixture standard solution was injected into the GC-ECD and a six point calibration curve that demonstrated a linear range was established for each target compound. Samples of each formulation, mixed with the internal standard and diluted with methanol were injected into the GC-ECD. Combinations of three different concentrations of each formulated pesticide were analyzed six times to obtain coefficients of variation which are less than 1%. The total analysis time for each run was 15 minutes. The concentration of active ingredients in the pesticide formulations were calculated from the peak area values at a retention time interpolated from the calibration graphs. The analytical results which show 55.41 � 0.82% for Diazinon, 83.97 � 0.36% for Malathion and 10.89 � 0.89 % for Quinalphos were within the specifications for these commercial pesticide formulations. |
| format | Article |
| id | my.uniten.dspace-29783 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2023 |
| record_format | dspace |
| spelling | my.uniten.dspace-297832023-12-28T16:57:39Z Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector Asha K.L. Tan G.H. Chai M.K. 16240801400 7202393048 24172523100 Diazinon GC-ECD Malathion Pesticide formulation Quinalphos A gas chromatography (GC) method has been developed to analyze simultaneously separate formulations of Diazinon, Malathion and Quinalphos with the internal standard method. A mixture of pure standard solution spiked with Chlorpyrifos as the internal standard and diluted with methanol was sonicated to homogenize the solutions. A 2?L volume of the mixture standard solution was injected into the GC-ECD and a six point calibration curve that demonstrated a linear range was established for each target compound. Samples of each formulation, mixed with the internal standard and diluted with methanol were injected into the GC-ECD. Combinations of three different concentrations of each formulated pesticide were analyzed six times to obtain coefficients of variation which are less than 1%. The total analysis time for each run was 15 minutes. The concentration of active ingredients in the pesticide formulations were calculated from the peak area values at a retention time interpolated from the calibration graphs. The analytical results which show 55.41 � 0.82% for Diazinon, 83.97 � 0.36% for Malathion and 10.89 � 0.89 % for Quinalphos were within the specifications for these commercial pesticide formulations. Final 2023-12-28T08:57:39Z 2023-12-28T08:57:39Z 2006 Article 2-s2.0-34247493701 https://www.scopus.com/inward/record.uri?eid=2-s2.0-34247493701&partnerID=40&md5=65b35f23804693faa59fd8bcbe358315 https://irepository.uniten.edu.my/handle/123456789/29783 25 2 131 138 Scopus |
| spellingShingle | Diazinon GC-ECD Malathion Pesticide formulation Quinalphos Asha K.L. Tan G.H. Chai M.K. Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title | Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title_full | Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title_fullStr | Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title_full_unstemmed | Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title_short | Simultaneous determination of Diazinon, Malathion and Quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| title_sort | simultaneous determination of diazinon, malathion and quinalphos pesticide formulations by gas chromatography with an electron capture detector |
| topic | Diazinon GC-ECD Malathion Pesticide formulation Quinalphos |
| url_provider | http://dspace.uniten.edu.my/ |