A nitrate sensitive planar optode; performance and interferences

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We present a newly developed nitrate sensitive planar optode. It exhibits a linear response to nitrate from 1 to 50 mM at pH 8.0, a fast response time below 10 s and a good lifetime, allowing for fast two dimensional nitrate measurements over long periods of time. Interference from nitrite, chloride and thiocyanate, however, limits the optode's application in environments where these are encountered, notably seawater with its high chloride content.
Original languageEnglish
JournalTalanta
Volume144
Pages (from-to)933-937
Number of pages5
ISSN0039-9140
DOIs
Publication statusPublished - 2015

Keywords

  • Fast response time
  • Linear response
  • Planar nitrate sensor
  • Chemical analysis
  • Chloride contents
  • Nitrate sensors
  • Nitrates

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