Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7225
Título: QuEChERS: a sample preparation for extraction of carbaryl from rat feces
Autor: Paíga, Paula
Domingues, Valentina F.
Wanderley, Kaline Amaral
Júnior, Severino Alves
Delerue-Matos, Cristina
Palavras-chave: Sample preparation
Liquid chromatography
Fluorescence detector
Rat feces
Data: Jul-2015
Editora: Taylor & Francis
Relatório da Série N.º: Toxicological & Environmental Chemistry;Vol. 97, Issue 6
Resumo: Carbamate compounds are an important group of cholinesterase inhibitors. There is a need for creating awareness regarding the risks of the inadequate carbamate use in the residential areas due to potential adverse human effects. Carbaryl is a commonly used pesticide worldwide. A simple, fast, and high throughput method was developed employing liquid chromatography with fluorescence detector to determine carbaryl residues in rat feces. The extraction was performed by using a rapid, easy, cheap, effective, reliable, and safe (QuEChERS) method, using acetonitrile as the extracting solvent. The parameters for the performance of the extraction method were optimized, such as ratio of mass of sample per volume of extraction solvent, QuEChERS content, and cleanup columns. Linear response was obtained for all calibration curves (solven and matrix-matched) over the established concentration range (5 500 mg/L) with a correlation coefficients higher than 0.999. The achieved recovery was 97.9% with relative standard deviation values of 1.1% (n D 4) at 167 mg/kg fortified concentration level and the limits of detection and quantification were 27.7 and 92.3 mg/kg respectively.
Peer review: yes
URI: http://hdl.handle.net/10400.22/7225
DOI: 10.1080/02772248.2015.1059974
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/02772248.2015.1059974
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