Determination of arsenic species using functionalized ionic liquid by in situ dispersive liquid-liquid microextraction followed by atomic absorption spectrometry
| Autor: | Vahid Ashouri, Kourosh Adib, Mehdi Rahimi-Nasrabadi, Gilan Attaran Fariman, Mohammad Reza Ganjali |
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| Rok vydání: | 2020 |
| Předmět: |
In situ
Liquid Phase Microextraction chemistry.chemical_element Ionic Liquids 01 natural sciences Analytical Chemistry law.invention Arsenic chemistry.chemical_compound 0404 agricultural biotechnology law Limit of Detection Liquid liquid Chelation Detection limit Spectrophotometry Atomic 010401 analytical chemistry 04 agricultural and veterinary sciences General Medicine 040401 food science 0104 chemical sciences chemistry Reagent Ionic liquid Atomic absorption spectroscopy Food Science Nuclear chemistry |
| Zdroj: | Food chemistry. 349 |
| ISSN: | 1873-7072 |
| Popis: | Synthesis and application of a task-specific ionic liquids (TSILs) as extracting solvents or chelating agents in dispersive liquid–liquid micro-extraction (DLLME) was evaluated. The developed method was based on the use of an ammonium pyrrolidine dithiocarbamate (APDC) bonded ionic liquid for chelation with As(III), followed by conversion of the As(III) chelated TSIL to a hydrophobic ionic liquid using KPF6 as an anion-exchange reagent. As(V) was reduced to As(III), using a 2/1 w/w blend of KI and Na2S2O3 and then the total amount of As was measured through ETAAS analysis. Under optimal conditions, linear dynamic ranges of 0.2–15 ng mL−1 and 0.2–20 ng mL−1 were observed in the determination of As(III) and total As respectively. The relative standard deviations (RSD%, n = 5) for the determination of As(III) (10 ng mL−1) was 3.2% and the limits of detection and quantitation were determined to be 0.01 ng mL−1 and 0.0.034 ng mL−1; respectively. |
| Databáze: | OpenAIRE |
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