Simultaneous determination of phosphate and calcium in river water samples by capillary zone electrophoresis with UV detection
| Autor: | Qingping Wang, Jin-Ming Lin, Guo-Nan Chen, Zuliang Chen |
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| Rok vydání: | 2011 |
| Předmět: |
Detection limit
Chromatography Resolution (mass spectrometry) Calibration curve Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Analytical chemistry Soil Science chemistry.chemical_element Electrolyte Calcium Phosphate Pollution Analytical Chemistry Ion chemistry.chemical_compound Capillary electrophoresis chemistry Environmental Chemistry Waste Management and Disposal Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 91:255-262 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310902999157 |
| Popis: | Capillary zone electrophoresis (CZE) with UV detection at 214 nm was developed for the simultaneous determination of phosphate and calcium in waters, where Ca2+ reacted with 2,6-pyridinedicarboxylic acid (2,6-PDCA) in the electrolyte to form anionic . Consequently, and were simultaneously separated by CZE using an electrolyte containing 10 mM 2,6-PDCA and 0.75 mM tetradecyltrimethylammonium bromide (TTAB) at pH 7.0. The results showed that reasonable resolution with low interference from other ions in the water was achieved. Linear calibration curves were obtained in the concentration range of 0.01–0.5 mM with hydrodynamic injection. The detection limits (S/N = 3) were 5 µM for and 2 µM for . The separation of and occurred within 6 min with small relative standard deviation of peak areas ( |
| Databáze: | OpenAIRE |
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