%0 Journal Article %A Habedank, Friederike %A Abraham, Marion %A Tardel, Helmar %A Feldhusen, Frerk %A Schulz-Bull, Detlef E. %D 2017 %T Determination of organophosphate pesticides in sea and surface water with ultrasound-assisted dispersive liquid–liquid micro-extraction coupled to GC-MS/MS analysis %U https://tandf.figshare.com/articles/journal_contribution/Determination_of_organophosphate_pesticides_in_sea_and_surface_water_with_ultrasound-assisted_dispersive_liquid_liquid_micro-extraction_coupled_to_GC-MS_MS_analysis/5302219 %R 10.6084/m9.figshare.5302219.v1 %2 https://tandf.figshare.com/ndownloader/files/9079918 %K Organophosphate pesticides %K GC-MS/MS %K micro-extraction %K sea water %K surface water %X

A sensitive enrichment method for the detection and quantification of 20 organophosphate pesticides in sea water and surface water was improved and validated. The compounds were extracted using ultrasound-assisted dispersive liquid–liquid microextraction and were analysed with an optimised Gas Chromatography - Tandem Quadrupole Mass Spectrometry (GC-MS/MS) method. Calibrations and validations were conducted for spiked local pond and Baltic Sea water. Recoveries of the organophosphate compounds from the different matrices ranged from about 25% to 70% and from 30% to 130% for pond and sea water, respectively. Obtained limit of detection (LoD) for both matrices was about 3 ng L−1 and the limit of quantification (k = 3) was 12 and 7 ng L−1 for pond and sea water, respectively. Valid extractability at the LoD level could be proven.

%I Taylor & Francis