Combined Application of QEM-SEM and Hard X-ray Microscopy to Determine Mineralogical Associations and Chemical Speciation of Trace Metals.

The article presents a study on the combined application of quantitative evaluation of mineralogy by scanning electron microscope (QEM-SEM) and hard X-ray microscopy to determine mineralogical associations and chemical speciation of trace metals in the U.S. It notes the reliance of successful trace metal speciation in heterogeneous matrices on a combination of techniques including spectroscopy, microscopy and wet chemical and physical experiments. It highlights the detailed insights provided by the QEM-SEM with micro-focused X-ray diffraction into the composition of mineral assemblages and their effect on trace metal speciation.