Comparison of the results with the DCHF-DA- and DCHF-based reaction protocols (c₀ = 48 μM) of the DCF assay for BaTiO₃ powder (BT) and reference experiments (REF) after thermal treatment.

Measured DCF concentration with increasing BT amount β_BT (a) and combination of measured pH and DCF concentration (b). Total DCF concentration c_DCF, DCF concentration formed due to autoxidation processes c_DCF,A or due to thermal excitation of BT c_DCF,T, initial concentration c₀, DCF: dichlorofluorescein, DCHF: dichlorodihydrofluorescein, DA: diacetate.