光谱学与光谱分析 |
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Non-Invasive Determination of Bone Lead in Human Body Using X-Ray Fluorescence Excited by 109Cd |
HUANG Shi-bin1, TIAN Lin2, CHENG Huan-sheng3, PEI Peng1 |
1. Shanghai Medical College, Fudan University, Shanghai 200032, China 2. School of Public Health, Shanxi Medical University, Taiyuan 030001, China 3. Institute of Modern Physics, Fudan University, Shanghai 200433, China |
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Abstract A measurement system of X-ray fluorescence excited by 109Cd was set up for the in vivo measurement of bone lead. In the system, a HPGe detector (10 mm×7 mm) was used to detect the characteristic K X-rays of lead in tibia excited by γ rays of 88.0 keV from 109Cd. By the normalization of lead X-rays to the coherent scatter, the content of bone lead was calculated from the calibration curves of the ratio (X-ray intensity: coherent intensity) against the lead concentration in tibia phantoms. The normalization technique rendered the measurement accuracy independent of tissue overlay thickness, bone shape, size, mass, and subject motion. Calibration curves obtained from a set of tibia phantoms with lead-doped plaster of Paris were linear. The results of pilot measurements showed that the contents of bone lead in the occupationally exposed workers were higher than those in the control group.
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Received: 2003-07-01
Accepted: 2003-11-16
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Corresponding Authors:
HUANG Shi-bin
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Cite this article: |
HUANG Shi-bin,TIAN Lin,CHENG Huan-sheng, et al. Non-Invasive Determination of Bone Lead in Human Body Using X-Ray Fluorescence Excited by 109Cd [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1470-1472.
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URL: |
http://www.gpxygpfx.com/EN/Y2004/V24/I11/1470 |
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