Details

Autor(en) / Beteiligte

• Liao, Xia Li

Titel

The effect of organic acids on surface charge properties of soils and second adsorption of cadmium

Ort / Verlag

ProQuest Dissertations & Theses

Erscheinungsjahr

2002

Quelle

ProQuest Dissertations & Theses A&I

Beschreibungen/Notizen

• The basic properties, clay mineral association and surface charge properties for zonal soils in china, including yellow cinnamon soil, yellow brown soil, brown red soil, red soil and latosol, were investigated. The effects of organic acids (acetic acid, oxalic acid, citric acid, tartaric acid) on surface charge properties and second adsorption of cadmium for different soils were also studied. The main results were shown as follows: 1. The organic matter content of the examined soils followed the Series: latosol (43.5g/kg)>red soil(26.7g/kg)>brown red soil(17.3g/kg)>yellow brown soil(16.7g/kg) > yellow cinnamon soil(9.6g/kg). The clay content of yellow brown soil (320g/kg) was the lowest, and that of latosol(780g/kg) was the highest. For the clay association, the prominent clay mineral in yellow cinnamon soil and yellow brown soil was hydromica(75~80%), whereas the main clay mineral in latosol was kaolinite(95%).From north to south, the expansive minerals changed regularly from montmorillonite to vermiculite,