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. 2018 Apr 29;11(5):702. doi: 10.3390/ma11050702

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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DPV response of the 10 wt % poly(BPE)/g-C₃N₄ composite-modified GCE for the individual analysis of (A) Cd²⁺ over a concentration range of 0.1–6.8 μM; (B) Pb²⁺ over a concentration range of 0.1–6.4 μM. The inset shows their linear equations as well as correlation coefficient.