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. 2019 Aug 28;9:12447. doi: 10.1038/s41598-019-48328-5

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Purifying meteorite extracts by thin layer chromatography. Approximately 0.5–1 mg of Murray and Murchison meteorite samples dissolved in chloroform was spotted at the origin of silica gel TLC plates, then developed with 4:1 hexane:diethyl ether and chloroform in the x and y dimensions respectively (black arrows). (A) Shows the Murchison plate exposed to short wave UV light (254 nm), and (B) shows the same plate exposed to long wave UV light that excited fluorescence (~360 nm). The circled area (white arrows) was scraped and eluted for analysis by mass spectrometry. (C) Shows the Murray plate exposed to short wave UV light, and (D) shows the same plate exposed to long wave UV light.