Browsing by Author "Mulongo, G."

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    Impact of Human Activities on the Quality of Water in Nyaruzinga Wetland of Bushenyi District - Uganda
    (International Science Congress Association, 2012) Safari, D.; Mulongo, G.; Byarugaba, D.; Tumwesigye, W.
    The study presents an investigation into the effect of various human activities on the degradation and lowering of water quality in Nyaruzinga wetland which is located in Bushenyi district, South Western Uganda. Water samples were drawn from six different places (one town supply, one water reservoir) and four contaminated sources near the wetland. The results were compared to both national and WHO guidelines. The different parameters assessed included apparent colour (AC), total suspended solids (TSS), turbidity (Tur), total dissolved solids (TDS), electrical conductivity (EC), total hardness (TH), pH and microbial activity using E. coli as a standard test. Experimental methods were composed of complexometric titration, turbidimetry, pH direct meter reading, spectrophotometry and standard plate count, using membrane filter technique. Results obtained revealed that most of the parameters investigated were outside the range recommended by both national standard and World Health Organization (WHO) guidelines. Such results were mainly attributed to fish farming and sewage discharge from the surrounding institutions.
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    Speciation of heavy metals in water from the Uganda side of Lake Victoria
    (International Journal of Environmental Studies, 2010) Mbabazi, Jolocam; Twinomuhwezi, H.; Wasswa, J.; Ntale, M.; Mulongo, G.; Kwetegyeka, J.; SchrǾder, K.H.
    Different forms of copper Cu, zinc Zn, lead Pb and cadmium Cd in water from the Uganda side of Lake Victoria (25°C, pH 6.75–7.18), the second largest inland freshwater lake in the world, have been studied using ion-exchange, dialysis and atomic absorption spectrophotometry. The results indicate that heavy metals Cu, Zn, Pb and Cd are present mainly in the cationic form (80–83%). Small quantities of anionic (13–22%), non-ionic, dialyzable (4–8%), and non-ionic, non-dialyzable (< 1.3–4.4%) forms were also detected for all metals except Cd. The corresponding concentrations lay in the ranges: cationic, 0.06–0.99; anionic, < 0.001–0.25; non-ionic, dialyzable, < 0.001–0.08; non-ionic, non-dialyzable, < 0.001–0.06 μg ml−1. The existence of the metals in non-ionic and nondialyzable forms is attributable to metal associations with high relative molecular mass (RMM) organic matters.