ArticleFrontiers in veterinary science2026
Modified QuEChERS methodology for the analysis of OCs and PCBs in liver and its application in wild birds (white stork, red kite, and griffon vulture).
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study aimed to adapt and validate the QuEChERS method for extracting and purifying 19 persistent organic pollutants-11 organochlorine compounds and 8 polychlorinated biphenyls-for GC-MS (CNI mode) analysis in bird liver samples. After extraction with acetonitrile and salt phase separation, the extract was reconstituted in hexane and cleaned using sulfuric acid. Linearity was ≥0.9, and precision was below 20% (ranging from 0.63 to 19.35%) across concentrations of 1-100 ng/g. Limits of detection ranged from 0.20 to 2.03 ng/g for organochlorine compounds and from 0.93 to 4.49 ng/g for polychlorinated biphenyls. Limits of quantification ranged from 0.67 to 6.78 ng/g for organochlorine compounds and from 3.11 to 14.97 ng/g for polychlorinated biphenyls. The matrix effect was slightly negative for
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