Combination of supramolecular solvent-based microextraction and ultrasound-assisted extraction for cadmium determination in flaxseed flour by thermospray flame furnace atomic absorption spectrometry
| Autor: | Leonardo Francisco Rafael Lemes, César Ricardo Teixeira Tarley |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Cadmium Chromatography 010401 analytical chemistry Extraction (chemistry) Thermospray chemistry.chemical_element 04 agricultural and veterinary sciences General Medicine Mass spectrometry 040401 food science 01 natural sciences 0104 chemical sciences Analytical Chemistry law.invention 0404 agricultural biotechnology chemistry law Graphite furnace atomic absorption Atomic absorption spectroscopy Inductively coupled plasma mass spectrometry Food Science |
| Zdroj: | Food chemistry. 357 |
| ISSN: | 1873-7072 |
| Popis: | This study describes the development of a new analytical method for cadmium determination in flaxseed flour based on ultrasound-assisted extraction combined with supramolecular preconcentration followed by thermospray flame furnace atomic absorption spectrometry. Cadmium from flaxseed flour was extracted by ultrasound-assisted radiation in acid medium (1.5 mol L−1HNO3) followed by liquid–liquid microextraction of the acid extract with dodecanoic acid/THF supramolecular solvent using diethyl dithiophosphate as a chelating agent. The limit of detection and the analytical curve range were found to be 0.10 μg L−1 and 0.35 to 20.0 μg L−1, respectively. The cadmium concentration in the flaxseed flours was ranged from 0.11 ± 0.04 to 0.79 ± 0.03 µg g−1. The proposed method is considered simpler, faster, low-cost, and environmentally friendly compared to procedures currently used for the determination of cadmium based on acid digestion and using graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry. |
| Databáze: | OpenAIRE |
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