Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media
Mercury is a toxic metal that exist and can be found everywhere in the surrounding as it is used in many products of our daily life and mercury contamination usually cannot be observed by human five senses. Continuous exposure to mercury can cause severe implication to neurologic, gastrointestinal a...
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| Format: | Proceeding Paper |
| Language: | English English |
| Published: |
2019
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| Online Access: | http://irep.iium.edu.my/79367/ http://irep.iium.edu.my/79367/1/CONFERENCE%20CLEANWAS-ERNA.pdf http://irep.iium.edu.my/79367/2/CleanWAS%202019-%20081.pdf |
| _version_ | 1848788759143776256 |
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| author | Abdullah, Erna Normaya Ahmad Hamdan, Mohamad Faiqwan Ahmad, Mohammad Norazmi Yunus, Kamaruzzaman Ku Bulat, Ku Halim |
| author_facet | Abdullah, Erna Normaya Ahmad Hamdan, Mohamad Faiqwan Ahmad, Mohammad Norazmi Yunus, Kamaruzzaman Ku Bulat, Ku Halim |
| author_sort | Abdullah, Erna Normaya |
| building | IIUM Repository |
| collection | Online Access |
| description | Mercury is a toxic metal that exist and can be found everywhere in the surrounding as it is used in many products of our daily life and mercury contamination usually cannot be observed by human five senses. Continuous exposure to mercury can cause severe implication to neurologic, gastrointestinal and renal organ systems. This study was conducted to develop a portable and easy to use chemosensor using Diphenylcarbazone (DPCO) for detecting Hg2+ ions in an aqueous system. The sensitivity of DPCO to act as a chemosensor was optimized based on solvent/co-solvent ratio and pH. The result showed that DPCO has a highly sensitivity against Hg2+ in DMSO/citrate buffer (8/2, v/v, pH=4.0). The LOD of DPCO against Hg2+ ions calculated was 13 ppm. The stoichiometric ratio of DPCO-Hg2+ was 1:1, as determined from the Job’s plots analysis. The chemical properties such as sigma profile, MEP, Fukui function and HOMO-LUMO energy of DPCO as a chemosensor were studied using COSMO-RS and DFT methods respectively. The result from the sigma profile calculation showed that DPCO formed stronger hydrogen bonds with the DMSO solvent. From DFT calculation, the HOMO-LUMO energy gap of DPCO and DPCO-Hg2+ were -4.2759 eV and -2.1769 eV, respectively. Test strips of DPCO chemosensor was developed and it showed color change that proved the ability of the DPCO chemosensor to detect Hg2+ in an aqueous medium. |
| first_indexed | 2025-11-14T17:45:55Z |
| format | Proceeding Paper |
| id | iium-79367 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:45:55Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-793672020-04-14T03:45:55Z http://irep.iium.edu.my/79367/ Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media Abdullah, Erna Normaya Ahmad Hamdan, Mohamad Faiqwan Ahmad, Mohammad Norazmi Yunus, Kamaruzzaman Ku Bulat, Ku Halim QD Chemistry Mercury is a toxic metal that exist and can be found everywhere in the surrounding as it is used in many products of our daily life and mercury contamination usually cannot be observed by human five senses. Continuous exposure to mercury can cause severe implication to neurologic, gastrointestinal and renal organ systems. This study was conducted to develop a portable and easy to use chemosensor using Diphenylcarbazone (DPCO) for detecting Hg2+ ions in an aqueous system. The sensitivity of DPCO to act as a chemosensor was optimized based on solvent/co-solvent ratio and pH. The result showed that DPCO has a highly sensitivity against Hg2+ in DMSO/citrate buffer (8/2, v/v, pH=4.0). The LOD of DPCO against Hg2+ ions calculated was 13 ppm. The stoichiometric ratio of DPCO-Hg2+ was 1:1, as determined from the Job’s plots analysis. The chemical properties such as sigma profile, MEP, Fukui function and HOMO-LUMO energy of DPCO as a chemosensor were studied using COSMO-RS and DFT methods respectively. The result from the sigma profile calculation showed that DPCO formed stronger hydrogen bonds with the DMSO solvent. From DFT calculation, the HOMO-LUMO energy gap of DPCO and DPCO-Hg2+ were -4.2759 eV and -2.1769 eV, respectively. Test strips of DPCO chemosensor was developed and it showed color change that proved the ability of the DPCO chemosensor to detect Hg2+ in an aqueous medium. 2019 Proceeding Paper NonPeerReviewed application/pdf en http://irep.iium.edu.my/79367/1/CONFERENCE%20CLEANWAS-ERNA.pdf application/pdf en http://irep.iium.edu.my/79367/2/CleanWAS%202019-%20081.pdf Abdullah, Erna Normaya and Ahmad Hamdan, Mohamad Faiqwan and Ahmad, Mohammad Norazmi and Yunus, Kamaruzzaman and Ku Bulat, Ku Halim (2019) Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media. In: International Conference on Clean Water, Air and Soil (CLEANWAS 2019), 26th-28th July 2019, Hanoi, Vietnam. (Unpublished) |
| spellingShingle | QD Chemistry Abdullah, Erna Normaya Ahmad Hamdan, Mohamad Faiqwan Ahmad, Mohammad Norazmi Yunus, Kamaruzzaman Ku Bulat, Ku Halim Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title | Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title_full | Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title_fullStr | Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title_full_unstemmed | Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title_short | Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media |
| title_sort | preliminary study on developing 1,5-diphenylcarbozone as a chemosensor againts hg2+ ions recognition in aqueous media |
| topic | QD Chemistry |
| url | http://irep.iium.edu.my/79367/ http://irep.iium.edu.my/79367/1/CONFERENCE%20CLEANWAS-ERNA.pdf http://irep.iium.edu.my/79367/2/CleanWAS%202019-%20081.pdf |