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1683847 
Journal Article 
UV resonance Raman spectroscopic detection of nitrate and nitrite in wastewater treatment processes 
Ianoul, A; Coleman, T; Asher, SA 
2002 
Yes 
Analytical Chemistry
ISSN: 0003-2700
EISSN: 1520-6882 
74 
6 
1458-1461 
WOS:000174414900036 
The 204- and 229-nm excited UV resonance Raman spectra of wastewater solutions containing sodium nitrite and nitrate were measured in the concentration range 7 muM to 3.5 mM (0.1-50 ppm nitrogen). The other chemical species present in wastewater do not interfere with Raman measurements of NO2-/NO3- bands. We observe detection limits of < 14 muM (<200 ppb) for both NO2- and NO3-. UV resonance Raman spectroscopy appears to be an excellent tool for on-line monitoring of NO2-/NO3- in wastewater for the real-time control of water treatment plants.