Determination study of contaminants of emerging concern at trace levels in agricultural soil. A pilot study
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García Valverde, Mar; Martínez Bueno, María Jesús; Gómez Ramos, María Del Mar; Aguilera del Real, Ana María; Gil García, María Dolores; [et al.]Fecha
2021-08-15Resumen
In this study, we aimed to develop and validate a quick, easy, and robust extraction method for the simultaneous
determination of 30 organic contaminants of emerging concern (CECs) including some transformation products
in soil samples. Three different extraction methods based on an ultrasonic cylindrical probe (UAE), a pressurized
liquid extraction (PLE), and a QuEChERS method were compared. Ultra-performance liquid chromatography
coupled with electrospray tandem mass spectrometry (LC-MS/MS) was used for identification and quantification
of the target analytes. A modified QuEChERS method showed the best results in terms of extractability and accuracy. The extraction procedure developed provided adequate extraction performances (70% of the target analytes
were recovered within a 70–99% range), with good repeatability and reproducibility (variations below 20%) and
great sensitivity (LOQ < 0.1 ng/g in most cases). No matrix effects were observed for 70% of the compounds. Finally, ...
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Química Ambiental