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. 2017 Apr 11;409(16):3951–3958. doi: 10.1007/s00216-017-0342-6

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© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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.

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Fig. 5 — SEM micrographs of PTFE membranes uncovered (a) and covered (b) with an ionic liquid, nylon membranes uncovered (c) and covered (d) with an ionic liquid, and PES membranes uncovered (e) and covered (f) with an ionic liquid [P666-14][N(CN)₂]