In the environment PCBs usually occur in mixtures. Therefore, also mixtures of the investigated biphenyl and PCBs were magnetically treated with SPION systems (now containing 1 µM of each pollutant, i.e., 28 nmol overall) as presented in Figure . In addition to the removed amounts (top), the normed shares of each pollutant in the removed amount are given (bottom) enabling better pollutant interaction preference discussion between the systems.