Spectrofluorimetric determination of trace Co(II) in aqueous samples with quinalizarin-β-cyclodextrin inclusion complex
| Autor: | Hee-Seon Choi, Hyeon Jung Baek |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Pharmacology
chemistry.chemical_classification Detection limit Quinalizarin Chromatography Aqueous solution Cyclodextrin Calibration curve Relative standard deviation Analytical Chemistry chemistry.chemical_compound chemistry Tap water Reservoir water Materials Chemistry Environmental Chemistry Agronomy and Crop Science Food Science |
| Zdroj: | Analytical Science and Technology. 28:255-259 |
| ISSN: | 1225-0163 |
| DOI: | 10.5806/ast.2015.28.4.255 |
| Popis: | A technique on the determination of Co(II) in aqueous samples with quinalizarin-β-cyclodextrininclusion complex was developed. The conditions such as pH of the sample solution, the concentration ofquinalizarin and the concentration of β-CD were optimized to 11.3(±0.2), 1.2×10 −6 M and 8.0×10 −6 M,respectively. Under these optimum conditions, the calibration curve of Co(II) was obtained over concentrationrange of 5.0×10 −9 ~ 1.2×10 −7 M. The detection limit was 4.2×10 −9 M (0.25 ng/mL). For validating this proposedtechnique, aqueous samples(stream water, reservoir water and tap water) were used. Recovery yields of 95~105%were obtained. The relative standard deviation(%) in aqueous samples were less than 7.0%. Based onexperimental results, it is proposed that this technique can be applied to the practical determination of Co(II).Key words: Co(II) determination, quinalizarin, β-cyclodextrin, spectrofluorimetry 1. 서 론 중금속은 매우 적은 양이라도 동식물의 생장에 큰영향을 주기 때문에 자연 환경에 흔적량으로 존재하는 이들을 정량하는데 많은 관심을 가지고 있다. 이중코발트는 3 암석, 토양, 물, 식물 및 동물 등에 존재하며 |
| Databáze: | OpenAIRE |
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