Nanogold Resonance Scattering Spectral Detection of Malemine Based on the Polyhydrogen Bonds Reaction
  
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DOI:10.3969/j.issn.1004-4957.年份.月份
KeyWord:malemine  polyhydrogen bonds complex  nanogold  resonance scattering method
  
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林陈银,刘庆业,梁爱惠,蒋治良 广西师范大学环境与资源学院珍稀濒危动植物生态与环境保护省部共建教育部重点实验室
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Abstract:
      In pH 7.0 phosphate buffer solution,HAuCl4 was reduced by 3,5-dihydroxybenzonic acid(DBA) to form nanogold particles that exhibited a strong resonance scattering(RS) peak at 610 nm.However,in the presence of malemine(MA), DBA would not reduce HAuCl4 but react with MA to form a stable complex by means of polyhydrogen bonds,which could result in the decrease of RS intensity.The decreased RS intensity was proportional to the MA concentration.Based on this,a RS method was developed for the detection of MA.Under the optimal conditions,the calibration curve was linear in the range of 5.0×10-6-4.0×10-5 mol?L-1 with correlation coefficient of 0.996 8.The method was applied in the determination of MA in milk with satisfactory result.
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