Essays about: "background concentrations metals"

Found 5 essays containing the words background concentrations metals.

  1. 1. Predictive modelling of metals in Swedish reference lakes

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Frida Nordbäck; [2016]
    Keywords : Reference condition; Lakes; Metals; Background concentration;

    Abstract : Metals are a natural part in our environment. Due to increased use of metals in our society the biogeochemical cycles of metals are being altered on local, regional and global scales. Metals can be emitted through direct use of some elements (Fe, Zn and Cu) or indirectly as a result of processes (e.g. READ MORE

  3. 2. The impact of waste handling on small-scale farming in Malawi

    University essay from SLU/Dept. of Soil and Environment

    Author : Sabina Braun; [2015]
    Keywords : soil management; poverty; land use; fertilisers; agriculture; food security;

    Abstract : This study assess the impact of human waste and household garbage on the concentrations of heavy metals in arable land on two sites located close either to a waste collecting point (WD) or waste water treatment plant (WWTP). Malawi suffers from poverty, low food security and problems with access to land. READ MORE

  4. 3. Metal release and mobility in an arctic lake due to artificial drainage : Effects of mining and sulfide oxidation

    University essay from Institutionen för ekologi, miljö och geovetenskap

    Author : Joacim Svahn; [2012]
    Keywords : Arctic environment; Sulfide oxidation; Metal leakage; Contaminated soils; Mine tailing; Arktisk miljö; Sulfidoxidation; Metallutlakning; Förorenad mark; Gruvor;

    Abstract : The aim of this report was to investigate the potential effects of sulfide oxidation in sediments of an arctic lake, N Luossajärvi, induced by lowered water level. Lake water, potentially contaminated by metals, was pumped into a mine tailings impoundment. READ MORE

  5. 4. Water framework directive mixing zone guidelines : applied on a smelter and mine scenario at two Boliden sites

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Arnola Çeka; [2011]
    Keywords : EU-WFD; Mixing Zone; Environmental Water Quality Standards; Discharge Test; CORMIX; Priority Substances;

    Abstract : The Water Framework Directive (WFD) aims to protect the aquatic environment and human health by reducing pollutants at the source. In order to achieve this, the concentration of priority substances should be lower than Environmental Quality Standards (EQS) values at the point sources. READ MORE

  6. 5. Traffic-Related Metals in Soil and Sediment in Mauritius

    University essay from Institutionen för geovetenskaper

    Author : Liselott Petersson; [2005]
    Keywords : Copper; lead; zinc; traffic pollution; heavy metal contamination; background concentrations metals; Mauritius;

    Abstract : Trafik utgör en stor föroreningskälla av tungmetaller i vägnära jordar och särskilt är det koppar (Cu), bly (Pb) och zink (Zn) som associeras med fordonstrafik. I ett historiskt perspektiv härrör blyutsläpp främst från bränsleförbränning, medan kopparemissioner (i första hand från slitage av bromsbelägg) och zinkutsläpp (från däck) från trafik står för så mycket som hälften av det urbana utsläppet av koppar och zink till omgivningen. READ MORE