To characterise curvilinear desorption of soil P, many researchers described the relationship between desorbed
and sorbed P employing a split-line model (2 lines with different slopes) (McDowell and Sharpley 2001; Koopmans et al.
Subsequent degradation of fipronil appeared dependent upon the rate at which it desorbed
from the soil.
Determination of the area under the curve fitted to the desorption leaching data indicates that about 170 mg/kg of Cu was desorbed
from the soil column by leaching with pH 5, 0.
For example, at 50 mg/L of applied Cu, the amount of Cu desorbed
from the non-treated soil was 45.
This trend continues for specimens desorbed
(or "aged") for 60 days after saturation (Fig.
1999); hence, Cl present in association with the positive charge density is also desorbed
and is leached from the soil profile (Fig.
2+] adsorbed on resin is almost desorbed
completely when the contact time of resin adsorbed [Hg.
75]Se was desorbed
from alkaline than acidic soils through single extraction with 0.
vapors are recondensed, mixed with chemicals, and recycled through the SoilTech Anaerobic Thermal Processor (ATP) system.
The first specimen group received no acetone treatment, the second was immersed in acetone until saturation, and the third one was the saturated specimen desorbed
in air for 1 day.
It is often found that substantial proportions of the heavy metals are not readily desorbed
back into solution after having been adsorbed by soil components.
The stress-strain properties were measured on 25-mm-long desorbed
and dry dumbbell-shaped specimens (thickness typically: 0.
At high pH, the P2 effects are small because the surface potential was already negative; at low pH the effects are again small because of the reacted phosphate becomes more labile and is more readily desorbed
However, for 6 soils, the amount of P desorbed
in the equilibrating solution containing the lowest P concentration exceeded the Colwell extractable P concentration, requiring the maximum amount of desorbed
P to be substituted as an estimate of q.
The shrinkage efficiency of the desorbed
sample becomes 1 in region II.