Oliveira, Sara M.Lopes, Teresa I. M. S.Tóth, Ildikó V.Rangel, António O. S. S.2011-10-232011-10-232006OLIVEIRA, Sara M... [et al.] - A multicommuted flow injection system with a multi-channel propulsion unit: spectrophotometric determination of N-NH4+. In International Conference on Flow Analysis, 10 (Flow Analysis X), Porto, Portugal, 3-8 September, 2006 - International Conference on Flow Analysis, 10 (Flow Analysis X): Book of Abstracts. [S.l. : s.n., 2006]. p.14http://hdl.handle.net/10400.14/6986engA multicommuted flow injection system with a multi-channel propulsion unit: spectrophotometric determination of N-NH4+journal article