Determination of Streptomycin Residue in Cucumber by Using CdTe Quantum Dots as Fluorescence Probes
  
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DOI:10.3969/j.issn.1004-4957.年份.月份
KeyWord:streptomycin  antibiotic residues  CdTe quantum dots  fluorescence probe  cucumber
  
AuthorInstitution
YUAN Xiao-yun,WANG Tian-lun,GUAN Ting-ting,WANG Jin-long,HUANG Hao-wen,YI Shou-jun,TANG Chun-ran,ZENG Yun-long* 湖南科技大学化学化工学院,理论有机化学与功能分子教育部重点实验室,分子构效关系湖南省普通高等学校重点实验室
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Abstract:
      A novel method for the detection of streptomycin(SM) residue in cucumber was developed based on the enhancement of the fluorescence intensity of CdTe quantum dots(QDs) in the presence of SM.The factors that influence the detection of SM were investigated,and the optimum conditions were investigated.Under the optimum conditions,a good linear relationship was found between relative fluorescence intensity of the system and concentration of streptomycin in the range of 5.0×10-12-1.0×10-10 mol/L with a correlation coefficient(r) of 0.999 0.The detection limit was 5.0×10-13 mol/L,and the recoveries were between 99% and 106%.With the advantages of high selectivity,low detection limit,simpleness and speediness,the proposed method was successfully applied in the detection of trace streptomycin residue in cucumber.
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