A novel chemiluminescence sensor for determination of quercetin based on molecularly imprinted polymeric microspheres

► A novel FI-CL sensor based on MIPm as recognition element was established. ► The sensor is reusable and has a great improvement in sensitivity and selectivity. ► In the sensor, measuring samples online was realised by using a two-way switch (T). ► The schematic diagram of the FI-CL sensor and this was the first report.