A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples
In this study, a potentiometric sensor composed of palm shell activated carbon modified with trioctylmethylammonium thiosalicylate (TOMATS) was used for the potentiometric determination of mercury ions in water samples. The proposed potentiometric sensor has good operating characteristics towards Hg...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-07-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/14/7/13102 |
| _version_ | 1798005563043348480 |
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| author | Ahmed Abu Ismaiel Mohamed Kheireddine Aroua Rozita Yusoff |
| author_facet | Ahmed Abu Ismaiel Mohamed Kheireddine Aroua Rozita Yusoff |
| author_sort | Ahmed Abu Ismaiel |
| collection | DOAJ |
| description | In this study, a potentiometric sensor composed of palm shell activated carbon modified with trioctylmethylammonium thiosalicylate (TOMATS) was used for the potentiometric determination of mercury ions in water samples. The proposed potentiometric sensor has good operating characteristics towards Hg (II), including a relatively high selectivity; a Nernstian response to Hg (II) ions in a concentration range of 1.0 × 10−9 to 1.0 × 10−2 M, with a detection limit of 1 × 10−10 M and a slope of 44.08 ± 1.0 mV/decade; and a fast response time (~5 s). No significant changes in electrode potential were observed when the pH was varied over the range of 3–9. Additionally, the proposed electrode was characterized by good selectivity towards Hg (II) and no significant interferences from other cationic or anionic species. |
| first_indexed | 2024-04-11T12:41:08Z |
| format | Article |
| id | doaj.art-9bc2c77896e542169a384740a7be26b8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:41:08Z |
| publishDate | 2014-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9bc2c77896e542169a384740a7be26b82022-12-22T04:23:30ZengMDPI AGSensors1424-82202014-07-01147131021311310.3390/s140713102s140713102A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water SamplesAhmed Abu Ismaiel0Mohamed Kheireddine Aroua1Rozita Yusoff2Chemical Engineering Department, University of Malaya, Kuala Lumpur 50603, MalaysiaChemical Engineering Department, University of Malaya, Kuala Lumpur 50603, MalaysiaChemical Engineering Department, University of Malaya, Kuala Lumpur 50603, MalaysiaIn this study, a potentiometric sensor composed of palm shell activated carbon modified with trioctylmethylammonium thiosalicylate (TOMATS) was used for the potentiometric determination of mercury ions in water samples. The proposed potentiometric sensor has good operating characteristics towards Hg (II), including a relatively high selectivity; a Nernstian response to Hg (II) ions in a concentration range of 1.0 × 10−9 to 1.0 × 10−2 M, with a detection limit of 1 × 10−10 M and a slope of 44.08 ± 1.0 mV/decade; and a fast response time (~5 s). No significant changes in electrode potential were observed when the pH was varied over the range of 3–9. Additionally, the proposed electrode was characterized by good selectivity towards Hg (II) and no significant interferences from other cationic or anionic species.http://www.mdpi.com/1424-8220/14/7/13102palm shell activated carbonionic liquidTOMATSion selective electrodemercury |
| spellingShingle | Ahmed Abu Ismaiel Mohamed Kheireddine Aroua Rozita Yusoff A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples Sensors palm shell activated carbon ionic liquid TOMATS ion selective electrode mercury |
| title | A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples |
| title_full | A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples |
| title_fullStr | A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples |
| title_full_unstemmed | A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples |
| title_short | A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples |
| title_sort | new electrochemical sensor based on task specific ionic liquids modified palm shell activated carbon for the determination of mercury in water samples |
| topic | palm shell activated carbon ionic liquid TOMATS ion selective electrode mercury |
| url | http://www.mdpi.com/1424-8220/14/7/13102 |
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