The Editor-in-Chief is issuing an editorial expression of concern regarding the article Microchim Acta (2018) 185: 19. https://doi.org/10.1007/s00604-017-2593-5 by Yuhong Song, Ruiyang Ma, Caina Jiao, Lin Hao, Chun Wang, Qiuhua Wu, and Zhi Wang shows significant overlap with another publication by Xiaolan Wang, Juntao Wang, Caina Jiao, Lin Hao, Qiuhua Wu, Chun Wang, Zhi Wang published on the same day [Talanta (2018) 179: 676–684. https://doi.org/10.1016/j.talanta.2017.12.002] without proper citation and without making the Editors or reviewers aware of the other publication.

The policy of Microchimica Acta requires that submitted articles describe work that has not been published before and that is not under consideration for publication elsewhere.

There are no concerns regarding the reliability of the results and data; therefore while one of these articles is being retracted the other remains in the public domain.

The authors sincerely apologize for this situation and have agreed to the retraction of Wang et al. [Talanta (2018) 179: 676–684].