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Wood ash or dolomite treatment of catchment areas - effects of mercury in runoff water

Abstract

A future increased use of biomass as a source of energy, and the planned restoration of mineral nutrient balance in the forest soils by returning the wood ashes, has led to concern for new environmental disturbances. The objectives of the present study were to investigate if the outflow of total mercury (TotHg) and methyl mercury (MeHg) from catchment areas treated with granulated wood ash (1988, 2.2 tons/ha, `ashed area`) or dolomite (1985, 5 tons/ha, `limed area`) differed from the outflow from an untreated (reference) area, and if variations in Hg outflow were correlated with changes in the outflow of organic substances or pH. The study areas are situated in Vaermland, Sweden. Samples of run-off water were taken weekly or monthly (depending on water-flow) during on year (1993-94). The outflow of MeHg, TotHg as well as H+ and dissolved organic material (DOC) was lower from the limed area compared to the other two areas, which did not differ significantly. There was a strong covariation between concentrations of DOC and MeHg and a weaker relation between DOC and TotHg in the run-off waters. MeHg also covaried with temperature while TotHg covaried with pH and water-supply. No difference was found when comparing Hg-data  More>>
Authors:
Parkman, H; Munthe, J [1] 
  1. Swedish Environmental Research Inst., Stockholm (Sweden)
Publication Date:
Nov 01, 1996
Product Type:
Technical Report
Report Number:
NUTEK-R-96-29
Reference Number:
SCA: 540320; PA: SWD-96:007685; EDB-96:167586; NTS-97:003571; SN: 96001691697
Resource Relation:
Other Information: PBD: 1996
Subject:
54 ENVIRONMENTAL SCIENCES; ASHES; ENVIRONMENTAL EFFECTS; DOLOMITE; MERCURY; METHYLMERCURY; WOOD; WATER POLLUTION; RUNOFF; SEASONAL VARIATIONS; LIMING; EXPERIMENTAL DATA; PH VALUE; MINERAL CYCLING
OSTI ID:
392704
Research Organizations:
Swedish National Board for Industrial and Technical Development (NUTEK), Stockholm (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1102-2574; Other: ON: DE97711504; TRN: SE9607685
Availability:
OSTI as DE97711504
Submitting Site:
SWD
Size:
35 p.
Announcement Date:
Nov 21, 1996

Citation Formats

Parkman, H, and Munthe, J. Wood ash or dolomite treatment of catchment areas - effects of mercury in runoff water. Sweden: N. p., 1996. Web.
Parkman, H, & Munthe, J. Wood ash or dolomite treatment of catchment areas - effects of mercury in runoff water. Sweden.
Parkman, H, and Munthe, J. 1996. "Wood ash or dolomite treatment of catchment areas - effects of mercury in runoff water." Sweden.
@misc{etde_392704,
title = {Wood ash or dolomite treatment of catchment areas - effects of mercury in runoff water}
author = {Parkman, H, and Munthe, J}
abstractNote = {A future increased use of biomass as a source of energy, and the planned restoration of mineral nutrient balance in the forest soils by returning the wood ashes, has led to concern for new environmental disturbances. The objectives of the present study were to investigate if the outflow of total mercury (TotHg) and methyl mercury (MeHg) from catchment areas treated with granulated wood ash (1988, 2.2 tons/ha, `ashed area`) or dolomite (1985, 5 tons/ha, `limed area`) differed from the outflow from an untreated (reference) area, and if variations in Hg outflow were correlated with changes in the outflow of organic substances or pH. The study areas are situated in Vaermland, Sweden. Samples of run-off water were taken weekly or monthly (depending on water-flow) during on year (1993-94). The outflow of MeHg, TotHg as well as H+ and dissolved organic material (DOC) was lower from the limed area compared to the other two areas, which did not differ significantly. There was a strong covariation between concentrations of DOC and MeHg and a weaker relation between DOC and TotHg in the run-off waters. MeHg also covaried with temperature while TotHg covaried with pH and water-supply. No difference was found when comparing Hg-data from the limed area before, directly after and eight years after the liming event. 13 refs, 12 figs, 1 tab}
place = {Sweden}
year = {1996}
month = {Nov}
}