Development of a compact grazing exit X-ray fluorescence spectrometer for fast trace elemental analysis

作者：Ashida Takafumi^*; Tsuji Kouichi

来源：Spectrochimica Acta Part B: Atomic Spectroscopy , 2014, 101: 200-203.

DOI：10.1016/j.sab.2014.08.033

• Grazing-exit
• X-ray fluorescence
• Trace elemental analysis
• Energy dispersive spectrometry

A compact grazing exit X-ray fluorescence (GE-XRF) spectrometer was developed in the laboratory. An Al cylindrical collimator for the primary X-rays was placed just above the sample stage. This collimator also played the role of an exit slit to detect fluorescent X-rays at small grazing exit angles. Therefore, no additional exit slit was used in this setup, leading to a compact design. The entire size of the analysis equipment was 80 mm x 200 mm x 170 mm (horizontal x vertical x height). The maximum exit angle was adjusted to the height of the sample stage. The background was drastically reduced at grazing exit angles, enabling trace elemental analysis. A calibration curve was obtained using 10 mu L Ga solutions. Accordingly, the detection limit for Ga was evaluated to be 20 ppb.

• 出版日期2014-11-1