Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 391, Issue 5, Pages 1977-1982Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-008-2112-y
Keywords
nitrite determination; polyurethane foam; 3-hydroxy-7,8-benzo-1,2,3,4-tetrahydroquinoline; diffuse reflectance spectroscopy; colorimetry
Ask authors/readers for more resources
Polyurethane foam (PUF) has been suggested as a solid polymeric reagent for determination of nitrite. The determination is based on the diazotization of end toluidine groups of PUF with nitrite in acidic medium followed by coupling of polymeric diazonium cation with 3-hydroxy-7,8-benzo-1,2,3,4-tetrahydroquinoline. The intensely colored polymeric azodye formed in this reaction can be used as a convenient analytic form for the determination of nitrite by diffuse reflectance spectroscopy (c(min) = 0.7 ng mL(-1)). The possibility of using a desktop scanner, digital camera, and computer data processing for the numerical evaluation of the color intensity of the polymeric azodye has been investigated. A scanner and digital camera can be used for determination of nitrite with the same sensitivity and reproducibility as with diffuse reflectance spectroscopy. The approach developed was applied for determination of nitrite in river water and human exhaled breath condensate.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available