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. 2021 Jun 10;9(6):136. doi: 10.3390/toxics9060136

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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Integration by mathematical curve fitting in MatLab using the example of the ∆⁹-THC signal. (A) ∆⁸/∆⁹-THC overlapped by the CBD hump with region of interest highlighted in red. (B) Extracted region of interest. (C) Baseline correction and signal fit (purple filled curve) by searching a defined signal range for specific coupling and maximum for minimal matrix interference.