Essays about: "DGT"

Found 4 essays containing the word DGT.

  1. 1. Comparing the diffusive gradient in thin film (DGT) method with water and ammonium-acetate-lactate for P extraction and extractable P required for maximum cereal yield using long-term field experiments

    University essay from SLU/Dept. of Soil and Environment

    Author : Cornelia Mesmer; [2017]
    Keywords : fertilization; plant-availability; agriculture; diffusion; phosphorus efficiency;

    Abstract : Using more phosphorus fertilizer than needed generates unnecessary costs for farmers and can lead to eutrophication of surface waters. Up to now, most country-specific soil tests to determine P plant-availability use chemical extractions that often extract P from non-plant available pools and are not suitable for all soil types. READ MORE

  3. 2. A study of the performance of biochar as adsorbing agent in o‐DGT devices

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Anna Eliasson; [2017]
    Keywords : Biochar; o‐DGT; DGT; emerging pollutants; organic pollutants; environmental chemistry; wastewater; wastewater treatment; contaminants; hormone disruptors;

    Abstract : A new complex aspect in the matter of water quality is the occurrence of emerging organic pollutants and contaminants in waste water. The currently low extent to which treatment of waste water is performed in Brazil, and in the world as a whole, there is a considerable need for development of cheap and accurate in-situ sampling methods for far-reaching studies of surface water quality. READ MORE

  4. 3. Metal Fractionation in Snowmelt Runoff : A Comparison between Ultrafiltration and Diffusive Gradients in Thin Films (DGT) techniques

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Sarah Lindfors; [2017]
    Keywords : Urban Runoff; Metals; Ultrafiltration; Diffusive Gradients in Thin Films;

    Abstract : Urban runoff is a non-point pollution source deteriorating water quality of natural watersystems. The composition of urban runoff vary depending on land use, seasonal changes anddifferent surfaces that come into contact with the water. READ MORE

  5. 4. Prediction of plant available copper, zinc and phosphorus in arable soils : comparison of diffusive gradients in thin film (DGT) technique with soil extraction methods

    University essay from SLU/Dept. of Soil and Environment

    Author : Madeleine Andersson; [2016]
    Keywords : Diffusive gradients in thin film technique DGT ; Cu; Zn; P; HNO3; CaCl2; P-AL; nutrient availability;

    Abstract : Nutrient deficiencies in crop production are today a worldwide problem. To maximize fertilizer efficiency and crop yields it is important to be able to assess the accurate amount of available nutrients in the soil (Mason et al., 2005). READ MORE