Evaluation of an alternative sorbent for passive sampling of the herbicides 2,4-D and Dicamba in the air.
Bruna Christofari CeolinMagali KemmerichMatheus Machado NogueraEdinalvo Rabaioli CamargoLuis Antonio de AvilaPublished in: Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes (2021)
The present study aimed to evaluate the Strata-X® sorbent, commonly used in cartridges, through analysis by high-performance liquid chromatography coupled with mass spectrometry. Due to the different physical-chemical characteristics of the compounds, different conditions of chromatography and mass analysis were necessary. The developed methods were validated in terms of selectivity, linear range, linearity (coefficient of determination, r2), the limit of detection (LOD), the limit of quantification (LOQ), accuracy (recovery, %), and precision (RSD, %). The results allowed us to select efficient extraction methods, using methanol acidified to pH 2 with formic acid, to elute the herbicides 2,4-D and dicamba in both sorbent materials. Besides, the Strata-X® sorbent was efficient in the sorption of analytes; thus, we indicate it for potential use in air sampling as an alternative to XAD-2.
Keyphrases
- solid phase extraction
- high performance liquid chromatography
- mass spectrometry
- liquid chromatography
- molecularly imprinted
- tandem mass spectrometry
- gas chromatography
- simultaneous determination
- physical activity
- metal organic framework
- mental health
- magnetic resonance
- heavy metals
- human health
- capillary electrophoresis