Development and validation of an HPLC/DAD method for the determination of 13 sulphonamides in eggs

The necessary requirements for precision (RSDR% below 23%) and trueness (recovery ranging from 45.2% to 87.5%) were fulfilled. Decision limit (CCα) values below 18.5 μg kg−1, comparable to those reported in LC-MS detection, demonstrated the suitability of the method in residues surveillance plans for the sulphonamides analysis in eggs at the carry-over level without the use of sophisticated and expensive instrumentation.