Sökning: "Mn concentration"
Visar resultat 11 - 15 av 41 uppsatser innehållade orden Mn concentration.
11. Cobalt and nickel concentrations in the Uppsala clay deposits : solubility and risk assessment
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Heavy metals create a contamination problem in soils. Examples of heavy metals are Ni, Co, and Cu. Soil environment and minerals existing in the soil such as Fe and Mn oxides affect the presence of these heavy metals. In this thesis, the cobalt and nickel concentrations of selected soil samples from different locations in Uppsala were determined. LÄS MER
12. Möjligheten att minska metallhalten i lakvatten med sulfatreducerande bakterier
Master-uppsats, Lunds universitet/Teknisk mikrobiologi; Lunds universitet/BioteknikSammanfattning : Anaerobic treatment of landfill leachate using sulphide precipitation was tested at pilot scale for the purpose of heavy metal removal. The emission of leachate is heavily regulated by Swedish authority and the overall concentrations of heavy metals is expected to rise as landfills contain less organic matter. LÄS MER
13. Investigation of the Metal Content in Cress Seedlings fed with increased Concentration of Lead & Iron Solutions
Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknikSammanfattning : Metals are essential nutrients for plant health, but not all metals are necessary and can sometimes be harmful towards plants depending on factors such as species, elemental composition in the soil and concentration of a metal. Iron (Fe), which is one of the most abundant metals in the earth’s crust is also one the most important nutrients for plant growth, as it is responsible for metabolism. LÄS MER
14. Kartering av kadmiumhalt i matjord med portabelt röntgenfluorescensinstrument
Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and EnvironmentSammanfattning : Cadmium (Cd) is a nonessential heavy metal that can be toxic to living organisms even in small amounts. Cd occurs naturally in all type of soils but have also been added trough soil amendments and atmospheric fallout. LÄS MER
15. Användning av biotillgänglighet i riskbedömning av förorenad jord : Oral biotillgänglighet och växttillgänglighet
Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : Risker med förorenad jord utreds ofta genom att jämföra uppmätta totalhalter med generella riktvärden. En riskbedömning som utgår från totalhalter överskattar ofta de verkliga riskerna för människans hälsa och miljö på en specifik plats. LÄS MER