37 uppsatser · sida 1 av 3
… length of the grain development and protein built-up time is also important. Cadmium is one of the most serious heavy metals in the crop grains, because of the relatively high amounts taken-up. Cadmium is reaching the soil both together with the fertilizer, which contains …
En studie av havres kadmiumupptag
The aim of our research was to investigate if oat is capable of extracting cadmium to such extent that it is usable in decontaminating polluted soils. We grew oat in a hydroponic culture during 28 days in a controlled environment and a total of 30 plants were used. The nutrient …
en metodstudie i föroreningsmodellering
… and a modelling tool called ”KadmiumKalkylatorn” has been performed to model cadmium pollution in rivers in Skåne, Sweden. The water runoff has been multiplied with cadmium standard concentrations based on membership in landuse classes. The result is based on, and reported for …
… and may replace the use of fish meal in organic poultry production. Lead and cadmium are heavy metals which occur in the environment and can be accumulated in mussels. When poultry are exposed to heavy metals, the metals are absorbed in the small intestine and distributed in the …
ett odlingsförsök vid tre rödfyrshögar i Västra Götalands län
… limestone to quick lime. The material contains arsenic, vanadium, molybdenum, cadmium, nickel, lead, and uranium among other elements. The aim of this paper is to examine the uptake of trace elements in vegetables grown on burnt alun shale and lime to determine whether or not …
… flow proportional sampling show that the concentrations of lead, mercury and cadmium has been reduced since 1989 while the concentrations of zinc, copper, chromium and nickel has increased in the industrial areas I1 and I2. In the residential areas S5 and Bäcklösa the …
påverkande faktorer och metodik för statistisk modellering
… performed. This analysis examined how the reduction of lead, copper, zinc and cadmium depends on the following factors: the specific pond area, the variance of the residence time distribution, the hydraulic efficiency and the concentration of incoming metals and suspended …
The level of cadmium (Cd) in Swedish arable land has increased during the last century and the average concentration of Cd in the plough layer is today 0.23 mg/kg. The increase is mainly due to anthropogenic activities such as phosphorus fertilizing, liming, import of feed, and …
… EEE. It currently restricts the use of six hazardous substances/compounds; cadmium, lead, mercury, hexavalent chromium, PBB, and PBDE. The RoHS Directive currently includes category 1-7 and 10 in the categories of EEE listed in Annex 1A to the WEEE-Directive (Waste of EEE). The …
avskiljning med mineraliska filtermaterial
… leachate from a municipal waste deposit. The heavy metals studied were: lead, cadmium, copper, mercury, chromium, nickel and zinc. The leachate contains high levels of dissolved organic carbon (DOC) and has a high pH-value along with a high buffer capacity. These characteristics …
Vass, bredkaveldun och gäddnate i Bergviks dagvattendamm
… the surface-water pond at Bergviks shopping centre all contains arsenic, lead, cadmium, chrome, cobalt, copper, nickel and zinc. The results in this study show a significant difference between these three plants in their heavy metals concentration. Broad-leafed pondweed had …
fallstudie i Värmdö kommun
… recourse aspects have been studied; Flows of nitrogen, phosphorus, BOD7 and cadmium to recipient; The potential of the different sewage systems to bring plant available nitrogen and phosphorus by residues to arable land, and the amount of cadmium that is at the same time added …
Skogaberg ” Ett pilotprojekt i Göteborg
… the alternative system when it comes to recycle of nutrients. Phosphorus and cadmium are chosen to describe and indicate the resource utilisation and environmental impact of different nutrient sources. Sanitation and risks with diseases, environmental&resource saving criteria …
en simuleringsstudie med modellen SEWSYS
… flow and the pollutants total phosphorous, total nitrogen, copper, zinc, lead, cadmium and polycyclic aromatic hydrocarbons (PAH). Samples and analysis for the two areas has been carried out for another thesis work during the same period. The results from those analyses have …
… this survey were mostly arsenic and mercury, but also some zinc, copper lead, cadmium and nickel. The two junkyards (object 1 and object 15) and The former scrap collection place (object 13) are the three sites where heavy metals had high concentrations. These objects also have …
