date:Mar 21, 2014
Determination of chromium in complex matrices is a notorious challenge, as interconversions between species may occur during sample preparation, making quantification very difficult. In a recent research study published in Journal of Agricultural and Food Chemistry, Rahman et al. performed speciated isotope dilution mass spectrometry (SIDMS), as described in EPA Method 6800 (update V) to determine chromium species in dietary supplements.
EPA Method 6800 was implemented with a Metrohm ion chroma