Mesquita, Raquel B. R.Ferreira, M. Teresa S. O. B.Rangel, António O. S. S.2011-10-072011-10-072008MESQUITA, Raquel B. R. ; FERREIRA, M. Teresa S. O. B. ; RANGEL, António O. S. S. - Development of a sequential injection system for the determination of nitrite and nitrate in estuarine waters. In ICFIA 2008 - International Conference of Flow Analysis, 15, Nagoya, Japan, 28 September-3 October, 2008http://hdl.handle.net/10400.14/5893engconference object