Soil water content and temperature as factors in the volatile loss of applied mercury (ii) from soils
1978
LANDA, EDWARD R.
Five surface soils from southeastern Montana were studied to determine the effects of soil water content and temperature on the volatile loss of applied divalent inorganic mercury.Soils were amended to 1 ppm Hg as Hg-Hg (NO3)2 The water content studies involved soil samples at room temperature (18–25°C), either allowed to air-dry or maintained near the 1/3-bar or the 80 percent saturated moisture levels. The temperature studies involved samples at the 1/3-bar moisture level maintained at either 10°C, room temperature, or 35°C. Residual Hg content was monitored for 5–7 weeks.Hg losses were higher at the 1/3-bar moisture content than at air-dryness or 80 percent saturation. At 35°C the initial Hg loss rate was accelerated with respect to room temperature, while at 10°C, losses were considerably reduced.
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