Fig. 8From: The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) Ryugua An optical microscope image of the Orgueil meteorite. The dotted line represents the boundary of the meteorite grain and the surrounding soft alloy. b A total ion image obtained by DESI-HRMS. c The number of species and the relative intensity (%) of identified from Orgueil. The relative intensity was calculated using total intensity from ROI (inside of the dotted line in (a), (b)). d DESI-HRMS images of total ions of CHN, CHO, CHO–Na, and CHNO compounds, respectivelyBack to article page