A highly sensitive electrochemiluminescence method combined with molecularly imprinted solid phase extraction for the determination of phenolphthalein in drug, slimming food and human plasma

► A method based on the combination of ECL and MISPE is first reported. ► Determination of phenolphthalein by ECL is first reported. ► LOD is 1 × 10−10 g/mL, about 10 times higher than previous ones.