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- Title
A new high-pressure squeezing technique for pore fluid extraction from terrestrial soils
- Authors
Brumsack, H.-J.; Bottcher, G.; Heinrichs, H.; Pohlmann, M.
- Abstract
A new plastic-lined high-pressure squeezing device has been developed for the extraction of soil pore solutions. At a maximum pressure of1100 kg cm-2 the water recovery ranged between 30 and 55%of the total water content. Pressure dependent squeezing experimentsshowed a general increase in Si, Mn, Mg, Ca, K, Na, Al, Fe, Cd, and Zn concentrations with progressive pore water extraction and increasing pressure, indicating that micro pore solutes have the highest concentrations of solutes. Soil samples with moisture contents of more than about 15% generally provided enough water for major and trace element analyses. The data do not reveal any contamination of the pore fluids from the squeezing device. An advantage of this method is that the solution could be closely related to a specific soil horizon on a cm scale and also to the time of sampling. A further application of this squeezing method is the possibility of pressure dependent sequential squeezing to obtain fluids from different pore spaces.
- Subjects
MAGNESIUM; SOIL science; SODIUM; SILICON; POTASSIUM; ZINC; IRON; CALCIUM; CADMIUM; ALUMINUM; METHODOLOGY; MANGANESE
- Publication
Water, Air & Soil Pollution, 1997, Vol 94, Issue 3-4, p289
- ISSN
0049-6979
- Publication type
Article