Fiber-optic probes for cyanide using metalloporphyrins and a corrin

Mary K. Freeman, Leonidas G. Bachas

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Fiber-optic probes for cyanide detection were constructed using metalloporphyrins and a corrin. The probes are based on a change in absorbance that occurs when cyanide coordinates with the reagent used. Response times are as fast as 2 min for cyanide concentrations above 1 × 10-5 M. The reproducibility at a given cyanide concentration level varies for the different reagents, but is most often below 5% (r.s.d.) for the useful portion of the calibration graph. The corrin-based probe is reversible and can be reused. The utility of each reagent is characterized in terms of response time, useful concentration range and reversibility.

Original languageEnglish (US)
Pages (from-to)119-125
Number of pages7
JournalAnalytica Chimica Acta
Issue number1
StatePublished - 1990
Externally publishedYes


  • Corrins
  • Cyanide
  • Fibre-optic chemical sensors
  • Metalloporphyrins

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy


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