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X-ray fluorescence spectra de-noising in soil heavy metal using biorthogonal wavelet packet transform
- Source :
- Chinese Optics Letters. 10:S23001
- Publication Year :
- 2012
- Publisher :
- Shanghai Institute of Optics and Fine Mechanics, 2012.
-
Abstract
- According to the X-ray fluorescence (XRF) spectral characteristics of heavy metals in soil, the application of XRF spectra de-noising using biorthogonal wavelet packet transform technology is analyzed. Wavelet pack decomposition and threshold setting are particularly discussed. Through spectra de-noising, the linear fitting relationship between concentration and intensity of Ni is meliorated. Experimental results demonstrate that this method can effectively overcome the noise interference and preserve characteristic spectra. This method is very useful to increase the accuracy of quantitative analysis, especially for analyzing trace elements in soil.
- Subjects :
- Trace (linear algebra)
Materials science
business.industry
Noise (signal processing)
X-ray fluorescence
Atomic and Molecular Physics, and Optics
Spectral line
Electronic, Optical and Magnetic Materials
Optics
Nuclear magnetic resonance
Wavelet
Interference (communication)
Electrical and Electronic Engineering
business
Biological system
Biorthogonal wavelet
Intensity (heat transfer)
Subjects
Details
- ISSN :
- 16717694
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Chinese Optics Letters
- Accession number :
- edsair.doi...........ae55e7b7e1f6d251cdf529e33252fc8d