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Advance in analysis methods of heavy metals in edible vegetable oils
  
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KeyWord:edible vegetable oil  heavy metal  analysis method  research progress
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QIU Huidong，ZHAO Bo，ZHANG Hong，ZHANG Xiaomin，etc  
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Abstract:
      The pretreatment and instrumental analysis methods of heavy metals in edible vegetable oils in recent ten years were summarized. The sample pretreatment methods mainly contained dry ashing，wet digestion，microwave digestion，liquid-liquid micro-extraction, etc, in which wet digestion and microwave digestion were commonly used,and liquid-liquid micro-extraction was a new method for heavy metals extraction in recent years. The instrumental analysis methods of heavy metals mainly contained atomic absorption spectrometry，atomic fluorescence spectrometry，inductively coupled plasma mass spectrometry，resonance light scattering and electrochemical analysis，in which inductively coupled plasma mass spectrometry was the trend of future development because of the simultaneous analysis of multielements.
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