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Detection of aflatoxin B1 in edible oil by carbon dots/silver compound material
  
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KeyWord:in-situ synthesis  CDs/Ag  aflatoxin B1  fluorescence enhancement
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LI Manxiu，REN Guangming，DU Lijuan，etc  
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Abstract:
      The carbon dots/silver compound material (CDs/Ag)was prepared by in-situ synthesis. The effects of aflatoxin B1 (AFB1)on the fluorescence intensity of CDs/Ag were studied. The results indicated that AFB1 could enhance fluorescence intensity of CDs/Ag, thus building a new method for detection of AFB1 in edible oil. In boric acid-borax buffer solution of pH 7.6, reaction for 30 min at 25?℃, fluorescence intensity of CDs/Ag system(F)and AFB1 mass concentration(c)had a good linear relationship. The linear range, linear equation, correlation coefficient and the limit of detection were 0.01-0.8 μg/mL, F=1 902c+309.3, 0.998 4 and 7.4×10-3 μg/mL, respectively. The content of AFB1 in edible oil was detected by the method and the recovery rate was 95%-106%.
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