Sökning: "ammonium oxalate"

Hittade 2 uppsatser innehållade orden ammonium oxalate.

1. 1. EVALUATION OF NEW AND OLD METHODS FOR CONSOLIDATION AND DESALINATION OF LIMESTONE CASESTUDIES; RENAISSANCE SCULPTURES IN LIMESTONE

   Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

   Författare :Doris Bengtsson; [2012-08-27]
   Nyckelord :consolidation; conservation in stone; barium hydroxide; ammonium oxalate; ammonium carbonate; calcium hydroxide; calcium oxalate; sculpture; desalination; limestone; limestone;

   Sammanfattning : The thesis discusses the methods for consolidation of weathering limestone based on compatibility of consolidants with limestone. I base my essay on literary investigation, two case studies, and to some extend experimental work. LÄS MER

3. 2. Effects of ammonium oxalate treatment on interlayer materials in 2:1 layer silicates from a podzol

   L3-uppsats, SLU/Dept. of Forest Soils

   Författare :Ylva Hedstrand; [2003]
   Nyckelord :interlayer; ammonium oxalate; vermiculite; smectite; podzol; clay; surface charge;

   Sammanfattning : In an ongoing study it was found that ammonium oxalate treatment in the dark (NH4Ox-D) reduced the permanent charges considerably in the Bh horizon and to a lesser degree in the Bs1 and Bs2 horizon in a podzolised soil. The aim of this study was to evaluate if the loss of permanent charge can be explained by removal of partial hydroxy-Al interlayer material by the NH4Ox-D treatment, resulting in a collapse of the interlayer space. LÄS MER