Rapid analysis of spilled petroleum oils by direct analysis in real time time-of-flight mass spectrometry with hydrophobic paper sample collection. - Rabinovitch, Lola; Saturos, Genesis; McCallum, Paige; Kwok, Honoria; Yan, Jeffrey; Filewood, Taylor; Cody, Robert; Brunswick, Pamela; Shang, Dayue (Environmental Systems Research, 2024)