LDTD method for rapid analysis of diclofenac in wastewater and sludge was developed.
The method provides accurate results in 12 s in comparison with LC approach.
ASE and USE were tested for the extraction of diclofenac from sludge.
The fate of diclofenac in wastewater treatment plant was studied.
LDTD approach can be applied for the analysis of high matrix environmental samples.