Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1559, Issue -, Pages 95-101Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2017.12.059
Keywords
In situ Ionic liquid dispersive liquid-liquid microextraction; Gas chromatography-mass spectrometry; Organophosphorus pesticides; Waters
Funding
- Comunidad Autonoma de la Region de Murcia (CARM, Fundacion Seneca) [19888/GERM/15]
- Spanish MINECO [CTQ2015-68049-R]
- European Commission (FEDER/ERDF)
- University of Murcia
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Nine organophosphorus pesticides (OPPs) were determined in environmental waters from different origins using in situ ionic liquid dispersive liquid microextraction (IL-DLLME). This preconcentration technique was coupled to gas chromatography-mass spectrometry (GC-MS) using microvial insert thermal desorption, an approach that uses a thermal desorption injector as sample introduction system. The parameters affecting both the microextraction and sample injection steps were optimized. The proposed method showed good precision, with RSD values ranging from 4.1 to 9.7%, accuracy with recoveries in the 85-118% range, and sensitivity with DLs ranging from 5 to 16 ng L-1. (C) 2017 Elsevier B.V. All rights reserved.
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