碳量子点/银复合材料用于食用油中黄曲霉毒素B1的检测
Detection of aflatoxin B1 in edible oil by carbon dots/silver compound material
  
DOI:
中文关键词:  原位复合;CDs/Ag  黄曲霉毒素B1;荧光增强
英文关键词:in-situ synthesis  CDs/Ag  aflatoxin B1  fluorescence enhancement
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Author NameAffiliation
LI Manxiu,REN Guangming,DU Lijuan,etc  
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中文摘要:
      采用原位复合法制备出高效复合的碳量子点/银复合材料(CDs/Ag),研究了黄曲霉毒素B1 (AFB1)对CDs/Ag荧光强度的影响。结果表明:AFB1与CDs/Ag溶液相互作用后,体系的荧光强度增强,由此建立测定食用油中AFB1的新方法。在pH 7.6的硼酸-硼砂缓冲溶液中,CDs/Ag和AFB1在25?℃反应30 min时,体系荧光强度(F)与AFB1质量浓度(c)呈良好线性关系,线性范围为0.01~0.8 μg/mL,线性方程为F=1 902c+309.3,R2为0.998 4,检出限为7.4×10-3 μg/mL。采用该方法测定了食用油中AFB1的含量,回收率为95%~106%。
英文摘要:
      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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