CE-ICP-MS: Advantages and improvements in selenium speciation

Improvements in coupling capillary electrophoresis online to inductively co upled plasma-mass spectrometry are described in the field of selenium speci ation. Experiments are performed for reduction bf analysis time and improve ments in the efficiency of the interface. This is performed by a differenti ation of the separation and detection stages. Selenium species are monitore d for detection limits and peak broadening, The optimized system is then ap plied to selenium speciation in a breast milk sample of early lactation.