Correction to: Microchimica Acta (2020) 187: 72

https://doi.org/10.1007/s00604-019-4026-0

The original version of this paper was published with an error in the supplementary information file. The Figure S1 in supporting information is incorrect, the replaced image is shown as follows:

The authors apologize for these errors, which do not affect the conclusions of the published paper.