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Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods
dc.creator | Han, Lijun | |
dc.creator | Matarrita Rodríguez, Jessie Alejandra | |
dc.creator | Sapozhnikova, Yelena | |
dc.creator | Lehotay, Steven J. | |
dc.date.accessioned | 2018-04-03T21:34:39Z | |
dc.date.available | 2018-04-03T21:34:39Z | |
dc.date.issued | 2016-06-03 | |
dc.identifier.citation | https://www.sciencedirect.com/science/article/pii/S0021967316304927?via%3Dihub | |
dc.identifier.issn | 0021-9673 | |
dc.identifier.uri | https://hdl.handle.net/10669/74411 | |
dc.description.abstract | This study demonstrates the application of a novel lipid removal product to the residue analysis of 65 pesticides and 52 environmental contaminants in kale, pork, salmon, and avocado by fast, low pressure gas chromatography – tandem mass spectrometry (LPGC–MS/MS). Sample preparation involves QuEChERS extraction followed by use of EMR-Lipid (“enhanced matrix removal of lipids”) and an additional salting out step for cleanup. The optimal amount of EMR-Lipid was determined to be 500 mg for 2.5 mL extracts for most of the analytes. The co-extractive removal efficiency by the EMR-Lipid cleanup step was 83–98% for fatty samples and 79% for kale, including 76% removal of chlorophyll. Matrix effects were typically less than ±20%, in part because analyte protectants were used in the LPGC–MS/MS analysis. The recoveries of polycyclic aromatic hydrocarbons and diverse pesticides were mostly 70–120%, whereas recoveries of nonpolar polybrominated diphenyl ethers and polychlorinated biphenyls were mostly lower than 70% through the cleanup procedure. With the use of internal standards, method validation results showed that 76–85 of the 117 analytes achieved satisfactory results (recoveries of 70–120% and RSD ≤ 20%) in pork, avocado, and kale, while 53 analytes had satisfactory results in salmon. Detection limits were 5–10 ng/g for all but a few analytes. EMR-Lipid is a new sample preparation tool that serves as another useful option for cleanup in multiresidue analysis, particularly of fatty foods. | es_ES |
dc.description.sponsorship | China Scholarship Council/[]/CSC/China | es_ES |
dc.description.sponsorship | Universidad de Costa Rica/[]/UCR/Costa Rica | es_ES |
dc.language.iso | en_US | es_ES |
dc.source | Revista de Cromatografía A, Vol. 1449, 2016 | es_ES |
dc.subject | EMR-Lipid | es_ES |
dc.subject | Cleanup | es_ES |
dc.subject | QuEChERS | es_ES |
dc.subject | Sample preparation | es_ES |
dc.subject | Pesticide residue analysis | es_ES |
dc.subject | Analyte protectants | es_ES |
dc.subject | Environmental contaminants | es_ES |
dc.subject | Foods | es_ES |
dc.subject | Fast GC-MS/MS | es_ES |
dc.title | Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods | es_ES |
dc.type | artículo original | |
dc.identifier.doi | 10.1016/j.chroma.2016.04.052 | |
dc.description.procedence | UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro en Investigación en Contaminación Ambiental (CICA) | es_ES |
dc.identifier.pmid | 27139213 |
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