Rodríguez-González, NoeliaGonzález-Castro, María-JoséBeceiro-González, ElisaMuniategui, Soledad2025-01-022025-01-022017-03-17Rodríguez-González, N., González-Castro, M.-J., Beceiro-González, E., Muniategui-Lorenzo, S., 2017. Development of a matrix solid phase dispersion methodology for the determination of triazine herbicides in marine sediments. Microchemical Journal 133, 137–143. https://doi.org/10.1016/j.microc.2017.03.0220026-265Xhttp://hdl.handle.net/2183/40599This is an accepted version of the published document.[Abstract] A method based on Matrix Solid Phase Dispersion (MSPD) for the determination of nine triazines in marine sediments was optimized in terms of dispersant agents, co-sorbents and elution solvents. Three dispersing agents: octadecylsilyl bonded silica (C18), graphitized carbon black (GCB) and diatomaceous earth, and four clean-up co-sorbents: Florisil, GCB, primary and secondary amine (PSA)/strong anion exchanger (SAX), and GCB/PSA were assayed. The best results were obtained with GCB as dispersing agent, without co-sorbent, using 20mL of ethyl acetate as elution solvent. Finally the extract was concentrated to dryness, re-constituted with 1mL methanol and determined by HPLC-DAD. The analytical recoveries obtained were close to 100% and repeatability and reproducibility were below than 3.5% for all compounds. The linearity of the calibration curves was excellent in matrix matched standards, and yielded the coefficients of determination ≥0.9992 for all the target analytes. The LOQ values ranged from 0.022 to 0.037mgkg−1. Finally the method was applied to analyse the target compounds in marine sediment samples from the estuary of A Coruña (Galicia, NW of Spain).engAtribución-NoComercial-SinDerivadas 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Diode array detectionHigh performance liquid chromatographyMatrix solid phase dispersionSedimentTriazinesjournal articleopen access10.1016/j.microc.2017.03.022