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A highly selective optical sensor for catalytic determination of ultra-trace amounts of nitrite in water and foods based on brilliant cresyl blue as a sensing reagent
Authors: Ali A Ensafi, M Amini
Publication date: 2010/5/18
Journal name: Sensors and Actuators B: Chemical
Volume: 147
Pages: 61-66
Publisher: Elsevier
A new optical sensor has been developed for nitrite determination based on the use of
brilliant cresyl blue (BCB) immobilized on triacetyl cellulose membrane using absorption
spectrophotometry. The sensor is based on the reaction of BCB with bromate as an oxidant
in the presence of nitrite in acidic media to produce a colorless product. Nitrite has a strong
catalytic effect on the reaction of BCB with bromate. The difference in the absorbance of the
optode at 570nm between uncatalyzed and catalyzed reactions (ΔA) was found to be ...
brilliant cresyl blue (BCB) immobilized on triacetyl cellulose membrane using absorption
spectrophotometry. The sensor is based on the reaction of BCB with bromate as an oxidant
in the presence of nitrite in acidic media to produce a colorless product. Nitrite has a strong
catalytic effect on the reaction of BCB with bromate. The difference in the absorbance of the
optode at 570nm between uncatalyzed and catalyzed reactions (ΔA) was found to be ...
http://www.sciencedirect.com/science/article/pii/S0925400510002261
Journal Papers
Month/Season:
May
Year:
2010