Vol. 29 No. 4 (2019)
Papers

Detection of a Sudan dye at low concentrations by surface-enhanced Raman spectroscopy using silver nanoparticles

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  • Tran Cao Dao,
  • Truc Quynh Ngan Luong,
  • Tuan Anh Cao,
  • Ngoc Minh Kieu
Tran Cao Dao
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
Truc Quynh Ngan Luong
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
Tuan Anh Cao
Tan Trao University, Trung Mon, Yen Son, Tuyen Quang, Vietnam
Ngoc Minh Kieu
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
DOI: https://doi.org/10.15625/0868-3166/29/4/14178

Published 16-12-2019

Keywords

  • SERS,
  • Sudan dyes,
  • silver nanoparticles

How to Cite

Dao, T. C., Luong, T. Q. N., Cao, T. A., & Kieu, N. M. (2019). Detection of a Sudan dye at low concentrations by surface-enhanced Raman spectroscopy using silver nanoparticles. Communications in Physics, 29(4), 521. https://doi.org/10.15625/0868-3166/29/4/14178
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Abstract

Sudan dyes are red colorants banned from use for food due to their toxic properties. However, because of the cheapness, they are sometimes adulterated into food illegally. Currently surface-enhanced Raman spectroscopy (SERS) is emerging as a good method to detect residues (including trace amounts) of Sudan dyes in food. In this report we present the SERS detection of Sudan I (a type of Sudan dyes) to concentrations as low as 1 ppb, using a very simple SERS substrate, which is made from silver nanoparticles chemically deposited on silicon surface.
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