A novel smectite-polymer nanocomposite (SPN) microstrip sensor for rapid quantitative detection of aflatoxins Conference Paper uri icon

abstract

  • This paper reports the development of a novel smectite-polymer nanocomposite (SPN) microstrip sensor for both rapid quantification and long-term monitoring of aflatoxins. The smectite was modified with Ba 2+ cation exchange to improve its aflatoxin adsorption. SPN thin-films were synthesized on silicon substrates via layer-by-layer self-assembly. SPN microstrip arrays were patterned on glass substrates using stencil masks and enclosed in a microfluidic channel. This reduces the diffusion length and the adsorption time of aflatoxins, thereby resulting in fast response time (< 10 min). A simple fluorometric quantification of aflatoxin concentration based on incident intensity modulation was developed to eliminate the need of a sophisticated fluorometer. A low detection limit of 6.09 ppb and a wide linear range of 580 ppb for aflatoxin B1 have been achieved. 2013 IEEE.

name of conference

  • 2013 IEEE Sensors

published proceedings

  • 2013 IEEE SENSORS

author list (cited authors)

  • Hu, H. e., Zou, J., & Deng, Y.

citation count

  • 0

complete list of authors

  • Hu, He||Zou, Jun||Deng, Youjun

publication date

  • November 2013

publisher