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Determination of six mineral elements in different kinds of soybeans by wavelength dispersive X-ray fluorescence spectrometry
  
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KeyWord:wavelength dispersive X-ray fluorescence spectrometry（WDXRF）  soybean  mineral element  inductively coupled plasma atomic emission spectroscopy（ICP-AES）
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CHEN Youcai, MENG Hongyu, SUN Yaqing，etc  
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Abstract:
      The application of wavelength dispersive X-ray fluorescence spectrometry (WDXRF) in the determination of mineral elements in soybean was mainly studied.With standard curve established via FP method, WDXRF method was used to determine the mineral content in soybean samples by boric acid bottom press. At the same time, the results were validated by inductively coupled plasma atomic emission spectrometry (ICP-AES) method. The results showed that the WDXRF method was fast and effective in determining the contents of six kinds of mineral elements in soybean such as Mg, K, Ca, Mn, Cu and Zn. Therefore, linear model y=ax+b was established about the values obtained by ICP-AES and WDXRF, and the correlations of models in Ca, Mn, Cu and Zn were better.
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