Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336
A water-isobutanol extraction-chromogenic system for NiII, based on the azo dye 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR; H2L) and the ionic liquid Aliquat 336 (A336), was studied. Under the optimal conditions (cMTAR = 2.0 × 10–4 mol dm–3, cA336 = 5.6 × 10–3 mol dm–3, pH 8.5 and extraction time t...
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| Format: | Article |
| Language: | English |
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Slovenian Chemical Society
2020-03-01
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| Series: | Acta Chimica Slovenica |
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| Online Access: | https://journals.matheo.si/index.php/ACSi/article/view/5299 |
| _version_ | 1818511556406673408 |
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| author | Galya Konstantinova Toncheva Danail Georgiev Hristov Nikolina Petkova Milcheva Kiril Blazhev Gavazov |
| author_facet | Galya Konstantinova Toncheva Danail Georgiev Hristov Nikolina Petkova Milcheva Kiril Blazhev Gavazov |
| author_sort | Galya Konstantinova Toncheva |
| collection | DOAJ |
| description | A water-isobutanol extraction-chromogenic system for NiII, based on the azo dye 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR; H2L) and the ionic liquid Aliquat 336 (A336), was studied. Under the optimal conditions (cMTAR = 2.0 × 10–4 mol dm–3, cA336 = 5.6 × 10–3 mol dm–3, pH 8.5 and extraction time t = 1 min), NiII is extracted as a ternary complex which can be represented by the formula (A336+)2[Ni(L2-)2]. In the absence of A336, or in a slightly acidic medium, a binary complex, [Ni(HL-)2], with an absorption maximum at l = 548 nm and a shoulder at 590 nm is formed. The following extraction-spectrophotometric characteristics were determined at the above-mentioned optimal conditions: lmax (545 nm), molar absorptivity (5.0 × 104 dm3 mol–1 cm–1), Sandell’s sensitivity (1.2 × 10–3 μg cm–2), Beer’s law limits (0.05–3.1 mg cm–3), constant of extraction (Log K = 6.1) and fraction extracted (99.2%). The effect of foreign ions was studied; the most serious interferences were caused by CoII, CuII and CrIII. |
| first_indexed | 2024-12-10T23:34:45Z |
| format | Article |
| id | doaj.art-8daf6b6396be4d9ebb1d1be0e6016b0d |
| institution | Directory Open Access Journal |
| issn | 1318-0207 1580-3155 |
| language | English |
| last_indexed | 2024-12-10T23:34:45Z |
| publishDate | 2020-03-01 |
| publisher | Slovenian Chemical Society |
| record_format | Article |
| series | Acta Chimica Slovenica |
| spelling | doaj.art-8daf6b6396be4d9ebb1d1be0e6016b0d2022-12-22T01:29:13ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552020-03-0167115115810.17344/acsi.2019.5299798Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336Galya Konstantinova Toncheva0Danail Georgiev Hristov1Nikolina Petkova Milcheva2Kiril Blazhev Gavazov3University of Plovdiv "Paissii Hilendarski"Medical University of PlovdivMedical University of PlovdivMedical University of PlovdivA water-isobutanol extraction-chromogenic system for NiII, based on the azo dye 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR; H2L) and the ionic liquid Aliquat 336 (A336), was studied. Under the optimal conditions (cMTAR = 2.0 × 10–4 mol dm–3, cA336 = 5.6 × 10–3 mol dm–3, pH 8.5 and extraction time t = 1 min), NiII is extracted as a ternary complex which can be represented by the formula (A336+)2[Ni(L2-)2]. In the absence of A336, or in a slightly acidic medium, a binary complex, [Ni(HL-)2], with an absorption maximum at l = 548 nm and a shoulder at 590 nm is formed. The following extraction-spectrophotometric characteristics were determined at the above-mentioned optimal conditions: lmax (545 nm), molar absorptivity (5.0 × 104 dm3 mol–1 cm–1), Sandell’s sensitivity (1.2 × 10–3 μg cm–2), Beer’s law limits (0.05–3.1 mg cm–3), constant of extraction (Log K = 6.1) and fraction extracted (99.2%). The effect of foreign ions was studied; the most serious interferences were caused by CoII, CuII and CrIII.https://journals.matheo.si/index.php/ACSi/article/view/5299nickel(ii)4-(2-thiazolylazo)orcinolternary complexsolvent extractionlow-toxic solventspectrophotometry |
| spellingShingle | Galya Konstantinova Toncheva Danail Georgiev Hristov Nikolina Petkova Milcheva Kiril Blazhev Gavazov Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 Acta Chimica Slovenica nickel(ii) 4-(2-thiazolylazo)orcinol ternary complex solvent extraction low-toxic solvent spectrophotometry |
| title | Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 |
| title_full | Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 |
| title_fullStr | Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 |
| title_full_unstemmed | Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 |
| title_short | Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 |
| title_sort | extraction chromogenic system for nickel ii based on 5 methyl 4 2 thiazolylazo resorcinol and aliquat 336 |
| topic | nickel(ii) 4-(2-thiazolylazo)orcinol ternary complex solvent extraction low-toxic solvent spectrophotometry |
| url | https://journals.matheo.si/index.php/ACSi/article/view/5299 |
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