Abstract:Total reflection X‐ray fluorescence (TXRF) is widely used for trace elemental analysis, wherein a thin monochromatic X‐ray beam is typically applied at glancing angles. The actual volume of the sample measured by the instrument (analysis volume) depends on the dimensions of the X‐ray beam and glancing angle, and it is a key feature in sample preparation for TXRF analysis. Herein, the analysis volume, including the analysis region and analysis height, was experimentally evaluated. A thin Au layer approximately … Show more
“…The optimal dimensions of a TXRF spectrometry specimen were evaluated by Tsuji et al 54 Mask vacuum evaporation was used to prepare a thin circular gold layer at specific positions on a flat glass substrate. By visualising the Au intensity over the glass substrate, it was concluded that a diameter of 5 mm could be detected.…”
Section: Grazing X-ray Techniques Including Txrf Spectrometrymentioning
This review covers developments in and applications of XRF techniques such as EDXRF, WDXRF, TXRF, XRF microscopy using technologies such as synchrotron sources, X-ray optics, X-ray tubes and detectors in laboratory, mobile and hand-held systems.
“…The optimal dimensions of a TXRF spectrometry specimen were evaluated by Tsuji et al 54 Mask vacuum evaporation was used to prepare a thin circular gold layer at specific positions on a flat glass substrate. By visualising the Au intensity over the glass substrate, it was concluded that a diameter of 5 mm could be detected.…”
Section: Grazing X-ray Techniques Including Txrf Spectrometrymentioning
This review covers developments in and applications of XRF techniques such as EDXRF, WDXRF, TXRF, XRF microscopy using technologies such as synchrotron sources, X-ray optics, X-ray tubes and detectors in laboratory, mobile and hand-held systems.
“…They determined the change of the FOV at four different excitation angles. 12 The picoliter approach applied here simplies the procedure for determining the detector FOV. It allows positioning the deposits more precisely using motorized stages, which allow for independent movement in the x-, y-and z-directions.…”
In TXRF the position-dependent signals were studied for concentric ring structures showing elemental separation between inner and outer rings. The specimens were obtained from picoliter printed micro preparation.
“…Various commercially available TXRF instruments have been developed; therefore, it is important to determine the analysis area for each TXRF instrument. We have previously determined the analytical area measured using a NANOHUNTER-II TXRF instrument (Rigaku Co., Japan) to be approximately 4 × 5 mm 2 ; 15 therefore, we believe that the optimal APPJ-treated area should be smaller than this value. In addition, it is important to evaluate the retention time of hydrophilicity after APPJ treatment.…”
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