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. 2020 Sep 28;413(3):763–777. doi: 10.1007/s00216-020-02939-4

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© The Author(s) 2020

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Fig. 4 — Dose-response curves of all-LIG potentiometric sensors with an ISE versus different RE a Ag/AgCl pseudo-RE was protected by a Nafion/KCl/PVC layer and b an unmodified LIG was used as RE material to minimize the influence of chloride ions (gray boxes: KCl, red circles KNO₃, blue triangles: NaCl; n = 3)