Paper Spray Mass Spectrometry Paper spray ion source workflow. Adapted from the manufacturer's illustration of the Thermo Scientific VeriSpray ion source Paper Spray Mass Spectrometry in Doping Analysis [...] sample matrices such as blood and urine when spotted onto a paper strip. By minimizing sample preparation and omitting chromatographic separation, paper spray mass spectrometry benefits from considerable cost- [...] first published 9.Sep 2020 Görgens C, Walker K, Boeser C, Wijeratne N, Martins C, Guddat S, Thevis M. Paper spray mass spectrometry - A potential complementary technique for the detection of polar compounds