Postolachi, LarisaLarisaPostolachiRusu, VasileVasileRusuLupascu, TudorTudorLupascu2017-03-132017-03-132016L : 1843-5831(on-line): 2457-8371http://hdl.handle.net/123456789/34310.21698/simi.2016.0034International Symposium "The Environment and the Industry", SIMI 2016The interdependence of phosphorus content with iron and manganese concentration in sediments of the Prut and Dniester Rivers was established. The methodology of sampling in accordance with recommendations of the American Geological Agency was used. The Fe and Mn content was determined by the flame atomic absorption spectroscopy. In order to establish the phosphorus content in water, bottom sediments and its interstitial water the methodology and procedures recommended by World Health Organization were applied. The recorded ratio of total iron and phosphorus at sediments surface along the Prut and Dniester Rivers was, in the most cases, greater than 15. This fact indicates that in sediments there is enough iron to control the flux of phosphorus from sediments in the water horizon. In interstitial water the Fediss:o-P ratio was greater than 3.6, suggesting that the sediments have a high affinity to phosphates, immobilized its. In bottom sediments of the Prut and Dniester Rivers the manganese and iron content has correlated positively with the phosphorus forms amount.Bottom sedimentsInterstitial waterIronManganesePhosphorusSymposium Proceedings