PRESENT STATUS OF X-RAY FLUORESCENCE ANALYSIS OF TRACE ELEMENTS USING SYNCHROTRON RADIATION

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-39-C9-47
Author(s):  
P. CHEVALLIER
Keyword(s):  
Trace Elements ◽  
Synchrotron Radiation ◽  
Present Status ◽  
Fluorescence Analysis ◽  
X Ray

scholarly journals Two-dimensional micro-beam imaging of trace elements in a single plankton measured by a synchrotron radiation X-ray fluorescence analysis.

2002 ◽  
Vol 51 (10) ◽  
pp. 883-890 ◽  
Author(s):  
Masako EZOE ◽  
Miho SASAKI ◽  
Akiko HOKURA ◽  
Izumi NAKAI ◽  
Yasuko TERADA ◽  
...  
Keyword(s):  
Trace Elements ◽  
Synchrotron Radiation ◽  
Fluorescence Analysis ◽  
Two Dimensional ◽  
X Ray

Studies on Location of Acupoints with X-ray Fluorescence Analysis Based on Synchrotron Radiation

2021 ◽  
Vol 11 (8) ◽  
pp. 2114-2119
Author(s):  
Chenglin Liu ◽  
Xiaohua Wang ◽  
Qiang Zhang ◽  
Dongliang Chen ◽  
Juncai Dong
Keyword(s):  
Trace Elements ◽  
Synchrotron Radiation ◽  
Fluorescence Analysis ◽  
High Technology ◽  
Relative Content ◽  
X Ray ◽  
Iron Copper ◽  
Stomach Meridian ◽  
Tcm Theory ◽  
Calcium Iron

Acupuncture and moxibustion are commonly accepted treatments in traditional Chinese medicine (TCM). One of the important issues of interest is determining the accurate location of acupoints in acupuncture. Modern high-technology methods were utilized to verify the accuracy of acupoint positions in TCM, reducing the uncertainty of manually locating the positions. The acupoint location was established according to the richness of trace elements (TEs). The relative content of TEs was perceived by X-ray fluorescence (XRF) analysis. The distribution of TEs was determined after the dates were calibrated and the processes were optimized. The relative content of TEs was significantly different in acupoint and non-acupoint areas. There was an uneven distribution of calcium, iron, copper, and zinc in the sample. The relative content of these elements was increased in the acupuncture areas, and the standard deviation was also relatively large, especially for calcium, showing obvious enrichment. According to the enriched area of the TEs, the distance was about 6 mm between the conception channel and the kidney meridian, and the distance to the stomach meridian was about 23 mm for the rabbit sample. The position of the acupoints and spacing of meridians, which were determined according to the enrichment of TEs, were consistent with the TCM theory. The results show that synchrotron radiation-based XRF is a suitable method for determining the location of acupoints.

Synchrotron Radiation as a tool for X-ray fluorescence analysis of trace elements

1988 ◽  
Vol 70 (1-2) ◽  
pp. 173 ◽  
Author(s):  
P. Chevallier ◽  
J.X. Wang ◽  
I. Brissaud
Keyword(s):  
Trace Elements ◽  
Synchrotron Radiation ◽  
Fluorescence Analysis ◽  
X Ray

XRMF applications of a monolithic, polycapillary, focusing x-ray optic

1996 ◽  
Vol 54 ◽  
pp. 240-241
Author(s):  
D. A. Carpenter ◽  
Ning Gao ◽  
G. J. Havrilla
Keyword(s):  
Trace Elements ◽  
Point Source ◽  
Focal Spot ◽  
Fluorescence Analysis ◽  
X Rays ◽  
Focal Distance ◽  
Spot Diameter ◽  
X Ray ◽  
Focal Spot Diameter

A monolithic, polycapillary, x-ray optic was adapted to a laboratory-based x-ray microprobe to evaluate the potential of the optic for x-ray micro fluorescence analysis. The polycapillary was capable of collecting x-rays over a 6 degree angle from a point source and focusing them to a spot approximately 40 µm diameter. The high intensities expected from this capillary should be useful for determining and mapping minor to trace elements in materials. Fig. 1 shows a sketch of the capillary with important dimensions.The microprobe had previously been used with straight and with tapered monocapillaries. Alignment of the monocapillaries with the focal spot was accomplished by electromagnetically scanning the focal spot over the beveled anode. With the polycapillary it was also necessary to manually adjust the distance between the focal spot and the polycapillary.The focal distance and focal spot diameter of the polycapillary were determined from a series of edge scans.

Control of trace elements content in solid-phase extraction sorbent by x-ray fluorescence analysis

2020 ◽  
Author(s):  
E. V. Kochergina ◽  
A. O. Vagina ◽  
A. O. Taukin ◽  
A. V. Abramov ◽  
G. M. Bunkov ◽  
...  
Keyword(s):  
Trace Elements ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Fluorescence Analysis ◽  
Phase Extraction ◽  
X Ray
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