123 Scopus citations


We have built a highly sensitive surface plasmon resonance (SPR) sensor to detect arsenic (As) in groundwater. Using several thiol-containing organic compounds as sensor probes, we have been able to discriminate arsenic levels below and above the US EPA maximum containment level (0.010 mg/L =10 ppb, according to 2006 regulation), in drinking water. The SPR sensor is simple comparing to conventional spectroscopic techniques currently employed for As detection, and can be potentially used for As level screening in groundwater.

Original languageEnglish (US)
Pages (from-to)82-88
Number of pages7
JournalSensors and Actuators, B: Chemical
Issue number1
StatePublished - Apr 10 2007


  • Arsenate
  • Arsenic
  • Arsenite
  • Groundwater
  • Sensor
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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