Schwertmannite in soil materials: Limits of detection of acidified ammonium oxalate method and differential X-ray diffraction

Agriculture & Biology

• ammonium oxalate 100%
• X-ray diffraction 64%
• detection limit 62%
• soil 32%
• acid sulfate soils 30%
• acid mine drainage 28%
• minerals 20%
• methodology 17%
• soil sampling 16%
• goethite 14%
• iron oxides 12%
• edaphic factors 10%
• water quality 9%
• soil pH 9%
• data analysis 8%
• acidity 8%
• soil quality 8%
• iron 6%

Earth & Environmental Sciences

• schwertmannite 98%
• oxalate 73%
• ammonium 54%
• X-ray diffraction 50%
• detection 38%
• soil 27%
• material 26%
• method 14%
• acid sulfate soil 12%
• acid mine drainage 10%
• acidity 8%
• mineral 7%
• goethite 4%
• extraction method 4%
• iron oxide 4%
• transform 3%
• health 2%
• water quality 2%
• iron 2%
• rate 1%