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This article is the solution to the Analytical Challenge to be found at http://dx.doi.org/10.1007/s00216-017-0340-8
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D’Ulivo, L. Solution to pink tea challenge. Anal Bioanal Chem 410, 19–20 (2018). https://doi.org/10.1007/s00216-017-0691-1
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DOI: https://doi.org/10.1007/s00216-017-0691-1