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. 2018 Jun 28;6:258. doi: 10.3389/fchem.2018.00258

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Copyright © 2018 Lvova, Caroleo, Garau, Lippolis, Giorgi, Fusi, Zaccheroni, Lombardo, Prodi, Di Natale and Paolesse.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) The employed PT measurement setup; (B) the photogram of PT response of optical sensor array toward individual solutions of CdCl₂ salt in the concentration range from 3.3 × 10⁻⁷ to 2.2 × 10⁻² mol/L.