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Physicochemical parameters and magnetic speciation of Iron in Nakivubo Channel and Lake Victoria waters
Author(s) -
Bbosa Naziriwo Betty,
Oyoo Wandiga Shem,
Vicent Madadi Odongo,
Atieno Abongo Debra
Publication year - 2009
Publication title -
lakes and reservoirs: research and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.296
H-Index - 39
eISSN - 1440-1770
pISSN - 1320-5331
DOI - 10.1111/j.1440-1770.2009.00398.x
Subject(s) - sorption , ferrous , genetic algorithm , turbidity , adsorption , environmental chemistry , geology , environmental science , chemistry , oceanography , ecology , organic chemistry , biology
Magnetic speciation technique was used for the determination of iron species in Nakivubo Channel and Lake Victoria waters. The method consisted of a column of supported Dowex 1‐X18, 20–50 US mesh (Cl) surrounded by movable permanent magnets. Dowex was supported by a porous material to permit adequate passage of the eluent through the column. In the presence of an external magnetic field, enhanced capacity for adsorption of iron III was observed. The enhanced capacity is primarily due to the magnetic field produced and ion exchange sorption mechanism. The results show that, most of the Iron in Nakivubo Channel waters is in reduced ferrous form while, in the Lake Victoria waters, it exists in the oxidized ferric form. Physicochemical parameters for the field samples are discussed in this study. Turbidity levels in catchments with substantial vegetation were significantly lower than those without. pH values up to 13 was observed for some of the point source. The physicochemical parameters along Nakivubo Channel waters were relatively higher than the Lake Victoria waters indicating slow increasing pollution load along the Nakivubo Channel.