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A Surface Enhanced Raman Scattering (SERS) microdroplet detector for trace levels of crystal violet

  • Bingxiang Liu
  • , Wei Jiang
  • , Haiting Wang
  • , Xiaohui Yang
  • , Sanjun Zhang
  • , Yufeng Yuan
  • , Ting Wu*
  • , Yiping Du
  • *此作品的通讯作者
  • East China University of Science and Technology
  • Shanghai Entry-Exit Inspection and Quarantine Bureau
  • East China Normal University

科研成果: 期刊稿件文章同行评审

摘要

We report on a microfluidic platform that integrates a winding microdroplet chip and a surface-enhanced Raman scattering (SERS) detection system for trace determination of crystal violet (CV). Colloidal silver was applied to generate SERS. Compared to the continuous flow microfluidic system, the microdroplet based detection described here effectively eliminates any memory effects. Effects of flow pattern, droplet size, surfactant, and position of detection were optimized. Under optimal conditions, there is a linear correlation between signal and the concentration of CV in the 10 nM to 800 nM range, with a correlation coefficient (R2) of 0.9967. The limit of detection in water is 3.6 nM. [Figure not available: see fulltext.]

源语言英语
页(从-至)997-1004
页数8
期刊Microchimica Acta
180
11-12
DOI
出版状态已出版 - 8月 2013
已对外发布

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