Sökning: "arsenite"

Visar resultat 11 - 12 av 12 uppsatser innehållade ordet arsenite.

1. 11. Investigation of the redox-conditions in the Nam Du well field, Hanoi, Vietnam, and their implications for mobilisation of arsenic

   L3-uppsats, SLU/Dept. of Soil Sciences

   Författare :Johanna Moreskog; [2007]
   Nyckelord :arsenic mobilisation; redox potential; wells; Ha Noi; Viet Nam;

   Sammanfattning : In 2005, a new well field along the Red River started pumping groundwater for production of drinking water in the Nam Du area south of Hanoi, Vietnam. Elevated concentrations of ammonium have been a well-known problem in the southern part of Hanoi area, but recently elevated concentrations of arsenic in the groundwater has also been of concern. LÄS MER

3. 12. Identifying possible sources of ammonium ions and arsenic in groundwater in the Nam Du area, Vietnam

   L3-uppsats, SLU/Dept. of Soil Sciences

   Författare :Peter Harms-Ringdahl; [2007]
   Nyckelord :groundwater; contamination sources; ammonium ions; arsenic species; redox potential; stable isotopes; Hanoi; Vietnam;

   Sammanfattning : Concentrations of arsenic and ammonium ions well above drinking water standards have been detected in aquifers which supply Hanoi, the capital of Vietnam, with fresh water. Chemical analyses showed arsenic and ammonium ion concentrations varying between 27 – 264 μg/l in freshwater and 1.8 – 34.7 mg/l in groundwater. LÄS MER