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| Indexado |
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| DOI | 10.1016/J.TALANTA.2019.120459 | ||||
| Año | 2020 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
In this study, a high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork as extraction phase is demonstrated for the first time in the determination of 20 multiclass organic micro-pollutants including pesticides, PAHs and UV filters compounds from aqueous samples with gas chromatography mass spectrometry (GC-MS). The influencing parameters (desorption solvent, volume and time, extraction time and sample pH and ionic strength) were carefully optimized using multivariate designs. The optimal conditions were 10 min for extraction using 35 mL of water samples and a liquid desorption using 1 mL of MeOH:AcOEt (50:50% v/v) for 20 min. A low-cost apparatus that allows six extractions simultaneously, providing a high throughput of 5 min per sample turnaround times, considering the sample preparation step was used for the first time in this modified RDSE methodology. Satisfactory analytical performance was achieved with limits of detection (LOD) between 0.08 and 1.5 mu g L-1 and limits of quantification (LOQ) between 0.3 and 4.8 mu g L-1. The relative recoveries for the analytes were determined using river and lake water samples spiked at different concentrations and ranging from 80% to 119% for all analytes, with relative standard deviations (RSD) lower than 20%. The extraction efficiency obtained for the proposed configuration with laminar cork was significantly superior to powdered cork, demonstrating an interesting new configuration for new applications.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Vieira, Camila M. S. | Mujer |
UNIV FED SANTA CATARINA - Brasil
Universidade Federal de Santa Catarina - Brasil |
| 2 | Mafra, Gabriela | Mujer |
UNIV FED SANTA CATARINA - Brasil
Universidade Federal de Santa Catarina - Brasil |
| 3 | Brognoli, Rafael | Hombre |
UNIV FED SANTA CATARINA - Brasil
Universidade Federal de Santa Catarina - Brasil |
| 4 | RICHTER-DUK, PABLO | Hombre |
Universidad de Chile - Chile
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| 5 | Rosero-Moreano, Milton | Hombre |
Univ Caldas - Colombia
Universidad de Caldas - Colombia |
| 6 | Carasek, Eduardo | Hombre |
UNIV FED SANTA CATARINA - Brasil
Universidade Federal de Santa Catarina - Brasil |
| Fuente |
|---|
| Conselho Nacional de Desenvolvimento Científico e Tecnológico |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior |
| Coordenação de Aperfeiçoamento de Pessoal de NÃvel Superior |
| Conselho Nacional de Desenvolvimento CientÃfico e Tecnológico |
| Agradecimiento |
|---|
| The authors are grateful to the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) and Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) for financial support and scholarships which made this research possible. |
| The authors are grateful to the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for financial support and scholarships which made this research possible. |