2.4.6. X-ray Fluorescence (XRF) Spectrometry

A Bruker Artax XRF spectrometer with a Silicon Drift Detector (SDD) and a rhodium anode X-ray tube was used for analysis. The primary X-ray beam is collimated to give a spot size of 0.65 mm. Spectra were acquired for 100 s live time at 50 kV and 600 μA. A helium flux was used to increase the detection efficiency for light elements (atomic number of potassium and lower).
