The SUNA V2 UV nitrate sensor is the ultimate chemical-free solution for autonomous monitoring of nitrogen-based nutrient concentrations in ocean, estuarine and high turbidity freshwater environments.
  • Boyle S., Trickett P., Partington A. & Murray C. (2014) Field Testing of an Optical in Situ Nitrate Sensor in Three Irish Estuaries Biology & Environment: Proceedings of the Royal Irish Academy 114 1-7 doi:10.3318/BIOE.2014.02 Read Now
  • Pellerin, B.A., Bergamaschi, B.A., Downing, B.D., Saraceno, J.F., Garrett, J.A., and Olsen, L.D. (2013) Optical Techniques for the Determination of Nitrate in Environmental Waters: Guidelines for Instrument Selection, Operation, Deployment, Maintenance, Quality Assurance, and Data Reporting U.S. Geological Survey Techniques and Methods 1–D5, 37 p Read Now
  • Pellerin, B.A, Saraceno, J, Shanley, J.B., Sebestyen, S.D., Aiken, G.R., Wollheim, W.M., Bergamaschi, B.A. (2011) Taking the pulse of snowmelt: in situ sensors reveal seasonal, event and diurnal patterns of nitrate and dissolved organic matter variability in an upland forest stream. Biogeochemistry doi:10.1007/s10533-011-9589-8 Read Now
  • Sackmann, B.S. (2011) Deschutes River Continuous Nitrate Monitoring. Quality Assurance Project Plan: Deschutes River Continuous Nitrate Monitoring, PUblication Number: 11-03-030 Read Now
  • Heffernan, J.B., Cohen, M.J. (2010) Direct and indirect coupling of primary production and diel nitrate dynamics in a subtropical spring-fed river. Limnol. Oceanogr., 55(2), 677 - 688.
  • MacIntyre, G., Plache. B, M.R. Lewis., Andrea, J, Feener, S, McLean, S.D. (2009) ISUS/SUNA Nitrate Measurements in Networked Ocean Observing Systems. White Paper Read Now
  • Prestigiacomo, A.R. (2009) Nitrate and Bisulfide: Monitoring and Patterns in Onondaga Lake, New York, Following Implementation of Nitrification Treatment, Prestigiacom, A.R, Effler, S.W., Matthew, D.A., Coletti, L.J., Water Environment Research, 81(5)
  • Johnson, K.S., Coletti. L.J. (2002) In situ ultraviolet spectrophotometry for high resolution and long-term monitoring of nitrate, bromide and bisulfide in the ocean. Deep Sea Research 49 1291-1305