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. 2018 Sep 7;9:3642. doi: 10.1038/s41467-018-05920-z

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© The Author(s) 2018

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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Fig. 9 — Quantitative SERS analysis of TBZ in fresh juice. a Schematic for separating and concentrating of TBZ from fresh apple juice. b SERS spectra of TBZ with concentrations of 10⁰, 10¹, 10², 10³, and 10⁴ ppm, respectively. c A linear plot of r_780/662 against logarithmic concentration of TBZ. The error bars represent the statistical RSD and were calculated from triplicate SERS experiments