Sensitive detection of 2,4,6-trinitrotoluene by surface plasmon fluorescence spectroscopy

Satoshi Ito, Shuhei Tanaka, Rui Yatabe, Takeshi Onodera, Kiyoshi Toko

Research output: Contribution to journalConference articlepeer-review


We developed a compact measurement system for surface plasmon fluorescence spectroscopy (SPFS) and a sensor surface for the detection of 2,4,6-trinitrotoluene (TNT). We employed a laser diode as a light source in the optical system for exciting fluorescence. Then, a fan-shaped beam was irradiated from the laser diode to a Au thin film using a beam expander. Fluorescence emission was captured using a photomultiplier detector. The sensor surface was modified with TNT analogues via a self-assembled monolayer. A limit of detection in the ppt range for TNT was obtained using a fluorescence-labeled anti- TNT monoclonal antibody in the SPFS system by indirect competitive assay.

Original languageEnglish
Article number6984999
Pages (from-to)325-328
Number of pages4
JournalProceedings of IEEE Sensors
Issue numberDecember
Publication statusPublished - Dec 12 2014
Event13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain
Duration: Nov 2 2014Nov 5 2014

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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