Determination of organic contaminants in groundwater from Anaga Rural Park and El Teide National Park (Canary Islands, Spain) by ultra-high-performance liquid chromatography-tandem mass spectrometry

A multi-class assessment of organic contaminants in groundwater from Anaga Rural Park and El Teide National Park, two protected volcanic environments in Tenerife, Canary Islands, reveals trace levels of anthropogenic pollutants. The study detected compounds such as myclobutanil, tebuconazole, oxolinic acid, caffeine, and carbamazepine, indicating potential influence from agricultural activities and wastewater infiltration. Researchers developed a sensitive analytical method using automated solid-phase extraction followed by ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS), validated for accuracy and sensitivity at the ng/L level. This work provides one of the first comprehensive evaluations of organic contaminants in protected volcanic aquifers, offering insights into groundwater vulnerability and supporting future monitoring and water management strategies in these ecologically significant areas.

Ortega-Zamora, C., Socas-Hernández, C., González-Sálamo, J., Álvarez-Méndez, S. J., Díaz-Peña, F. J., & Hernández-Borges, J. (2026). Determination of organic contaminants in groundwater from Anaga Rural Park and El Teide National Park (Canary Islands, Spain) by ultra-high-performance liquid chromatography-tandem mass spectrometry. Journal of Chromatography Open, 10, 100370. https://doi.org/10.1016/j.jcoa.2026.100370