Urban dietary heavy metal intake from protein foods and vegetables in Dar es salaam

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dc.contributor.authorTungaraza, Clavery
dc.contributor.authorMato, Rubhera
dc.contributor.authorMkoma, Stelyus l
dc.contributor.authorEzekiel, Charles Nyarongo
dc.date.accessioned2023-07-31T10:28:51Z
dc.date.available2023-07-31T10:28:51Z
dc.date.issued2011
dc.descriptionJournal Articleen_US
dc.description.abstractThis was an investigation to characterize seasonal and spatial distribution of particulate organic matter (POM) in the surface water of Lake Victoria at Speke Gulf, by using carbon-13 and nitrogen-15 isotopic signatures. Speke Gulf is under the influence of terrestrial inflow through river Simiyu. The POM from the lake surface water had higher C:N ratio values decreasing towards the deeper lake water, an indication of decreasing nitrogen content relative to carbonic materials. Samples away from the river mouth provided C:N ratios within the Redfield ratio range (C:N:P; 106:16:1) indicating materials of phytoplanktonic origin. The POM isotopes composition indicated a maximum δ 13 C value of −21.2‰ close to the river mouth and lowest value (~ −25‰) away from the river influence. The δ 15 N maximum (14.7‰) was observed near the river mouth with lower values (5.8‰) found in deeper waters away from the river mouth. Overall, there was a general decrease of 13 C and δ 15 N values from shallow water to deeper water. There was higher δ 15 N value dispersion (std. Dev. ±3.4‰) compared to δ 13 C values with std. Dev.±1.2‰. These values also varied with seasons, a phenomenon showing significant influence of land run off on the lake elemental distribution, carbon and nitrogen in particular.en_US
dc.identifier.issn1991-8631
dc.identifier.urihttp://www.suaire.sua.ac.tz/handle/123456789/5500
dc.language.isoenen_US
dc.publisherInternational Journal of Biological and chemical scienceen_US
dc.subjectLake Victoriaen_US
dc.subjectParticulate Organic Matteren_US
dc.subjectCarbon and nitrogenen_US
dc.subjectIsotope signaturesen_US
dc.titleUrban dietary heavy metal intake from protein foods and vegetables in Dar es salaamen_US
dc.typeArticleen_US
dc.urlhttp://ajol.info/index.php/ijbcsen_US

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