Mesquita, Raquel Beatriz RibeiroSantos, Inês CarvalhoBordalo, Adriano AgostinhoRangel, António Osmaro Santos Silva2013-01-282013-01-282012MESQUITA, Raquel ...[et al.] - Sequential injection system exploring the standard addition method for phosphate determination in high salinity samples: interstitial, transitional and coastal waters. Analytical Methods. ISSN 1759-9679. Vol. 4, n.º 5 (2012), p. 1452-1457.1759-9660http://hdl.handle.net/10400.14/10024Technical NoteA sequential injection system for phosphate determination within a wide concentration range was developed for water samples with high salinity levels. The determination is based on molybdenum blue chemistry using the standard addition quantification method. The detection system included a multireflective flow cell coupled to a light emitting diode, enabling the minimization of the schlieren effect. The developed system gave a LOD of 0.3 mmol P L 1 and LOQ of 1.1 mmol P L 1 with a sample consumption of 125 mL. A determination rate of about 30 h 1 was obtained, and the developed method was effectively applied to interstitial, transitional and coastal waters.engjournal article10.1039/c2ay05792a1759-9679WOS:000303603000039