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. 2020 Mar 14;412(24):6351–6360. doi: 10.1007/s00216-020-02571-2

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© The Author(s) 2020

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Fig. 2 — Raman (R) and interference-enhanced Raman (IER) mean spectra of drop-dried [Fe]TAFC samples. The amounts of [Fe]TAFC refer to a sample volume of 0.75 μL. A comparison of IER and Raman spectra shows that IER enables a more sensitive detection of smaller quantities. The spectra were shifted vertically for clarity