<b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b>
A new kinetic method has been developed for the measurement of Mn(II) in water samples. The method is based on the catalytic effect of Mn(II) with the oxidation of Celestine blue (CB<sup>+</sup>) by KIO<sub>4</sub> using 1,10-phenantroline (Phen) as an activator. The optimum...
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| Format: | Article |
| Language: | English |
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Chemical Society of Ethiopia
2011-12-01
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| Series: | Bulletin of the Chemical Society of Ethiopia |
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| Online Access: | http://ajol.info/index.php/bcse/article/view/68628 |
| _version_ | 1811268511061770240 |
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| author | Ramazan Gürkan |
| author_facet | Ramazan Gürkan |
| author_sort | Ramazan Gürkan |
| collection | DOAJ |
| description | A new kinetic method has been developed for the measurement of Mn(II) in water samples. The method is based on the catalytic effect of Mn(II) with the oxidation of Celestine blue (CB<sup>+</sup>) by KIO<sub>4</sub> using 1,10-phenantroline (Phen) as an activator. The optimum conditions obtained are pH 4.5, 0.1 M acetate buffer solution, 4.0 x 10<sup>-4</sup> M KIO4, 4.5 x 10<sup>-5</sup> M CB<sup>+</sup>, 1.0 x 10<sup>-4</sup> M Phen, reaction temperature 40 <sup>°</sup>C and reaction time of 4.0 min at 640 nm. Under the optimized conditions, the method allowed the measurement of Mn(II) in a range of 0.1-5.0 μg L<sup>-1</sup> with a detection limit of 0.023 μg L<sup>-1</sup>. The recoveries in measuring the standard Mn(II) solutions of 0.5, 2.0 and 4.0 μg L<sup>-1</sup> were in the range of 97-103%, and the relative standard deviations (RSDs) were in a range of 3.0-0.8%. The method was applied satisfactorily to the determination of Mn(II) in some environmental water samples. The reliability of method was also verified by determining the manganese content of the certified standard reference river water sample, JAC-0031. Compared with the previously published catalytic-kinetic methods and instrumental methods, the method showed fairly good selectivity and sensitivity, low cost, cheapness, low detection limit and rapidity. It can easily and successfully be applied to the natural water samples. |
| first_indexed | 2024-04-12T21:24:11Z |
| format | Article |
| id | doaj.art-fbd93ad5308148a1ac015480e2313c67 |
| institution | Directory Open Access Journal |
| issn | 1011-3924 1726-801X |
| language | English |
| last_indexed | 2024-04-12T21:24:11Z |
| publishDate | 2011-12-01 |
| publisher | Chemical Society of Ethiopia |
| record_format | Article |
| series | Bulletin of the Chemical Society of Ethiopia |
| spelling | doaj.art-fbd93ad5308148a1ac015480e2313c672022-12-22T03:16:13ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2011-12-01253333346<b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b>Ramazan GürkanA new kinetic method has been developed for the measurement of Mn(II) in water samples. The method is based on the catalytic effect of Mn(II) with the oxidation of Celestine blue (CB<sup>+</sup>) by KIO<sub>4</sub> using 1,10-phenantroline (Phen) as an activator. The optimum conditions obtained are pH 4.5, 0.1 M acetate buffer solution, 4.0 x 10<sup>-4</sup> M KIO4, 4.5 x 10<sup>-5</sup> M CB<sup>+</sup>, 1.0 x 10<sup>-4</sup> M Phen, reaction temperature 40 <sup>°</sup>C and reaction time of 4.0 min at 640 nm. Under the optimized conditions, the method allowed the measurement of Mn(II) in a range of 0.1-5.0 μg L<sup>-1</sup> with a detection limit of 0.023 μg L<sup>-1</sup>. The recoveries in measuring the standard Mn(II) solutions of 0.5, 2.0 and 4.0 μg L<sup>-1</sup> were in the range of 97-103%, and the relative standard deviations (RSDs) were in a range of 3.0-0.8%. The method was applied satisfactorily to the determination of Mn(II) in some environmental water samples. The reliability of method was also verified by determining the manganese content of the certified standard reference river water sample, JAC-0031. Compared with the previously published catalytic-kinetic methods and instrumental methods, the method showed fairly good selectivity and sensitivity, low cost, cheapness, low detection limit and rapidity. It can easily and successfully be applied to the natural water samples.http://ajol.info/index.php/bcse/article/view/68628Mn(II)Kinetic-spectrophotometryCatalytic effect110-PhenantrolineCelestine blue |
| spellingShingle | Ramazan Gürkan <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> Bulletin of the Chemical Society of Ethiopia Mn(II) Kinetic-spectrophotometry Catalytic effect 1 10-Phenantroline Celestine blue |
| title | <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> |
| title_full | <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> |
| title_fullStr | <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> |
| title_full_unstemmed | <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> |
| title_short | <b>Catalytic spectrophotometric determination of Mn(II) at trace levels using Celestine blue-KIO<sub>4</sub>-1,10-phenantroline redox reaction</b> |
| title_sort | b catalytic spectrophotometric determination of mn ii at trace levels using celestine blue kio sub 4 sub 1 10 phenantroline redox reaction b |
| topic | Mn(II) Kinetic-spectrophotometry Catalytic effect 1 10-Phenantroline Celestine blue |
| url | http://ajol.info/index.php/bcse/article/view/68628 |
| work_keys_str_mv | AT ramazangurkan bcatalyticspectrophotometricdeterminationofmniiattracelevelsusingcelestinebluekiosub4sub110phenantrolineredoxreactionb |