TY - JOUR A1 - Dorgerloh, Ute A1 - Becker, Roland A1 - Freeling, Finnian A1 - Scheurer, Marco A1 - Gökçe, Emine A1 - Strack, Katrin A1 - Sommerfeld, Thomas A1 - Sauer, Andreas A1 - Schneider, Jonas A1 - Härtel, Christoph A1 - Valkov, Vassil A1 - Moser, Lukas A1 - Geiß, Sabine A1 - Junginger, Sabine A1 - Schlittenbauer, Linda A1 - Suess, Elke A1 - Ruth, Katinka T1 - Standardising the quantification of trifluoroacetic acid in water: Interlaboratory validation trial using liquid chromatography-mass spectrometric detection (LC–MS/MS) N2 - The concentration of trifluoroacetic acid in surface and groundwaters and drinking water is subject of increasing concern. Since there is no standardised procedure available, German standardisation body DIN has initiated the first draft standard using liquid chromatography with tandem mass spectrometry (LC–MS/MS) after direct injection for the concentration range between ≥ 0.1 and 3 µg/L. Herein, the interlaboratory comparison as final validation step involving 12 expert laboratories from Germany and Switzerland is described. Two groundwaters, two surface waters, a drinking water, a rainwater, and two fortified groundwater samples displayed relative repeatability standard deviations between 3 and 7% and relative reproducibility standard deviation between 6 and 20% and were included in the draft standard DIN 38407-53. KW - TFA Trifluoroacetic acid KW - LC/MS-MS KW - Validation trial PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-632376 DO - https://doi.org/10.1007/s00769-025-01640-2 SN - 0949-1775 SP - 1 EP - 4 PB - Springer CY - Berlin AN - OPUS4-63237 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -