Determination of Cadmium in Tap, Sea and Waste Water Samples by Vortex-Assisted Dispersive Liquid-Liquid-Solidified Floating Organic Drop Microextraction and Slotted Quartz Tube FAAS After Complexation with a Imidazole Based Ligand
| Autor: | Merve Fırat, Maral Selin Fındıkoğlu, Fatma Turak, Sezgin Bakırdere, Cigdem Sahin, Dotse Selali Chormey |
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| Rok vydání: | 2018 |
| Předmět: |
complexation
limit of quantitation Stepwise optimization Analytical chemistry Relative standard deviations Extraction 010501 environmental sciences Ligands ligand 01 natural sciences law.invention chemistry.chemical_compound phenanthroline derivative law water sampling atomic absorption spectrometry seawater Water Science and Technology Cadmium limit of detection pH Cadmium determination Ecological Modeling Drop (liquid) tap water Instrumental measurements Quartz Instrumental parameters Pollution unclassified drug Drops flow rate buffer measurement accuracy Atomic absorption spectroscopy Solidified floating organic drop microextraction Atoms Environmental Engineering Materials science organic compound Absorption spectroscopy water chemistry extraction method sea water Flame atomic absorption spectrometry chemistry.chemical_element solvent slotted quartz tube Article imidazole Absorbance Tap water dispersive liquid liquid solidified floating organic drop microextraction complex formation 2 (4 methylphenyl) 1h imidazo [4 5 f] [1 10] phenanthroline Environmental Chemistry controlled study wastewater accuracy assessment 0105 earth and related environmental sciences Detection limit waste water Spectrometry 010401 analytical chemistry Liquids Buffer solution 0104 chemical sciences Slotted quartz tubes chemistry sensitivity and specificity atomic absorption spectroscopy |
| Zdroj: | Water, Air, & Soil Pollution. 229 |
| ISSN: | 1573-2932 0049-6979 |
| DOI: | 10.1007/s11270-018-3689-1 |
| Popis: | This study presents a combination of dispersive liquid-liquid-solidified floating organic drop microextraction (DLLSFODM) and slotted quartz tube (SQT) with conventional flame atomic absorption spectrometry (FAAS) to improve the sensitivity for cadmium determination. A ligand namely 2-(4-methylphenyl)-1H-imidazo-[4,5-f]-[1,10]-phenanthroline which has not been used in trace analyte determination was used to form a cadmium complex. Stepwise optimization of parameters affecting complex formation (pH, ligand, and buffer solution) and extraction (extraction and dispersive solvents, salt effect and mixing) was done to maximize cadmium absorbance. The slotted quartz tube was fitted onto the flame burner and optimized to increase residence time of atoms in the flame. Instrumental parameters such as sample and fuel flow rate were also optimized to further enhance the absorbance signal for cadmium. Using optimal parameters and values, the limits of detection and quantification were determined to be 0.81 and 2.69 µg L-1, respectively. Low percent relative standard deviations (< 6.0%) indicated good precision for both extraction and instrumental measurements. Recovery tests were used to determine the accuracy of the method and the recovery results obtained were between 88 and 113%. [Figure not available: see fulltext.]. © 2018, Springer International Publishing AG, part of Springer Nature. |
| Databáze: | OpenAIRE |
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