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| 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 |
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| 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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| 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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