Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide
Coconut oil as a natural solvent is proposed for green downscaling solvent extractive determination. Determination of Cu(II) using 1,5-Diphenylcarbazide (DPC) was selected as a model for the investigation. Cu(II)-DPC complexes in aqueous solution were transferred into coconut oil phase. The change o...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/23/8622 |
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| author | Kullapon Kesonkan Chonnipa Yeerum Kanokwan Kiwfo Kate Grudpan Monnapat Vongboot |
| author_facet | Kullapon Kesonkan Chonnipa Yeerum Kanokwan Kiwfo Kate Grudpan Monnapat Vongboot |
| author_sort | Kullapon Kesonkan |
| collection | DOAJ |
| description | Coconut oil as a natural solvent is proposed for green downscaling solvent extractive determination. Determination of Cu(II) using 1,5-Diphenylcarbazide (DPC) was selected as a model for the investigation. Cu(II)-DPC complexes in aqueous solution were transferred into coconut oil phase. The change of the color due to Cu(II)-DPC complexes in coconut oil was followed by using a smartphone and image processing. A single standard concept was used for a series of Cu(II) standard solutions. A downscaling procedure using a 2 mL vial provided a calibration: color intensity = −142 [Cu(II)] + 222, (R<sup>2</sup> = 0.98), 10% RSD. Using a well plate, a calibration was: color intensity = 61 [Cu(II)] + 68 (R<sup>2</sup> = 0.91), 15% RSD. Both were for the range of 0–1 ppm Cu(II). Application of the developed procedure to water samples was demonstrated. The developed procedures provided a new approach of green chemical analysis. |
| first_indexed | 2024-03-09T17:38:43Z |
| format | Article |
| id | doaj.art-6eb3bdb6df604391808fbe000e01b8de |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T17:38:43Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-6eb3bdb6df604391808fbe000e01b8de2023-11-24T11:45:26ZengMDPI AGMolecules1420-30492022-12-012723862210.3390/molecules27238622Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-DiphenylcarbazideKullapon Kesonkan0Chonnipa Yeerum1Kanokwan Kiwfo2Kate Grudpan3Monnapat Vongboot4Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandCenter of Excellence for Innovation in Analytical Science and Technology for Biodiversity-Based Economic and Society (I-ANALY-S-T_B.BES-CMU), Chiang Mai University, Chiang Mai 50200, ThailandCenter of Excellence for Innovation in Analytical Science and Technology for Biodiversity-Based Economic and Society (I-ANALY-S-T_B.BES-CMU), Chiang Mai University, Chiang Mai 50200, ThailandDepartment of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandCoconut oil as a natural solvent is proposed for green downscaling solvent extractive determination. Determination of Cu(II) using 1,5-Diphenylcarbazide (DPC) was selected as a model for the investigation. Cu(II)-DPC complexes in aqueous solution were transferred into coconut oil phase. The change of the color due to Cu(II)-DPC complexes in coconut oil was followed by using a smartphone and image processing. A single standard concept was used for a series of Cu(II) standard solutions. A downscaling procedure using a 2 mL vial provided a calibration: color intensity = −142 [Cu(II)] + 222, (R<sup>2</sup> = 0.98), 10% RSD. Using a well plate, a calibration was: color intensity = 61 [Cu(II)] + 68 (R<sup>2</sup> = 0.91), 15% RSD. Both were for the range of 0–1 ppm Cu(II). Application of the developed procedure to water samples was demonstrated. The developed procedures provided a new approach of green chemical analysis.https://www.mdpi.com/1420-3049/27/23/8622coconut oilnatural solventdownscaling extractioncolorimetric solvent extraction determinationcopper (II)diphenylcarbazide |
| spellingShingle | Kullapon Kesonkan Chonnipa Yeerum Kanokwan Kiwfo Kate Grudpan Monnapat Vongboot Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide Molecules coconut oil natural solvent downscaling extraction colorimetric solvent extraction determination copper (II) diphenylcarbazide |
| title | Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide |
| title_full | Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide |
| title_fullStr | Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide |
| title_full_unstemmed | Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide |
| title_short | Green Downscaling of Solvent Extractive Determination Employing Coconut Oil as Natural Solvent with Smartphone Colorimetric Detection: Demonstrating the Concept via Cu(II) Assay Using 1,5-Diphenylcarbazide |
| title_sort | green downscaling of solvent extractive determination employing coconut oil as natural solvent with smartphone colorimetric detection demonstrating the concept via cu ii assay using 1 5 diphenylcarbazide |
| topic | coconut oil natural solvent downscaling extraction colorimetric solvent extraction determination copper (II) diphenylcarbazide |
| url | https://www.mdpi.com/1420-3049/27/23/8622 |
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