EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS
The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in twenty-three examples of acid precipitation from New Hampshire, New York, and Maine, and in the same number of mixtures of acid precipitation with minerals characteristic of soils in the three states me...
Main Authors: | , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
2004
|
Subjects: | |
Online Access: | http://oaspub.epa.gov/eims/eimsapi.dispdetail?deid=39198 |
id |
ftepa:oai:epaEIMS:39198 |
---|---|
record_format |
openpolar |
spelling |
ftepa:oai:epaEIMS:39198 2023-05-15T15:52:44+02:00 EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS Garrison Sposito A.L. Page Mark E. Frink 2004-04-16T20:31:19Z http://oaspub.epa.gov/eims/eimsapi.dispdetail?deid=39198 unknown https://cfint.rtpnc.epa.gov/si/ntislink.cfm?dirEntryID=39198 Office of Research and Development Text 2004 ftepa 2007-11-21T13:43:24Z The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in twenty-three examples of acid precipitation from New Hampshire, New York, and Maine, and in the same number of mixtures of acid precipitation with minerals characteristic of soils in the three states mentioned. Between 100 and 200 soluble inorganic and organic complexes were taken into account in each speciation calculation. The calculations performed on the acid precipitation samples showed that the metals (including heavy metals) and the sulfate, chloride, and nitrate ligands would be almost entirely in their free ionic forms, while the phosphate, carbonate, ammonia, and organic ligands would be in their protonated forms. This result was independent of the geographic location of the acid precipitation and the month of the year in which it was collected. The speciation calculations on the precipitation-soil mineral mixtures showed that aluminum and iron levels in a soil solution affected by acid precipitation would be significantly higher than in one whose chemistry is dominated by carbonic acid. It was also shown that soil cation exchangers would adsorb preferentially heavy metals, such as Cd and Pb, which are found in acid precipitation. Text Carbonic acid Environmental Protection Agency (EPA): Science Inventory |
institution |
Open Polar |
collection |
Environmental Protection Agency (EPA): Science Inventory |
op_collection_id |
ftepa |
language |
unknown |
description |
The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in twenty-three examples of acid precipitation from New Hampshire, New York, and Maine, and in the same number of mixtures of acid precipitation with minerals characteristic of soils in the three states mentioned. Between 100 and 200 soluble inorganic and organic complexes were taken into account in each speciation calculation. The calculations performed on the acid precipitation samples showed that the metals (including heavy metals) and the sulfate, chloride, and nitrate ligands would be almost entirely in their free ionic forms, while the phosphate, carbonate, ammonia, and organic ligands would be in their protonated forms. This result was independent of the geographic location of the acid precipitation and the month of the year in which it was collected. The speciation calculations on the precipitation-soil mineral mixtures showed that aluminum and iron levels in a soil solution affected by acid precipitation would be significantly higher than in one whose chemistry is dominated by carbonic acid. It was also shown that soil cation exchangers would adsorb preferentially heavy metals, such as Cd and Pb, which are found in acid precipitation. |
format |
Text |
author |
Garrison Sposito A.L. Page Mark E. Frink |
spellingShingle |
Garrison Sposito A.L. Page Mark E. Frink EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
author_facet |
Garrison Sposito A.L. Page Mark E. Frink |
author_sort |
Garrison Sposito |
title |
EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
title_short |
EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
title_full |
EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
title_fullStr |
EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
title_full_unstemmed |
EFFECTS OF ACID PRECIPITATION ON SOIL LEACHATE QUALITY: COMPUTER CALCULATIONS |
title_sort |
effects of acid precipitation on soil leachate quality: computer calculations |
publishDate |
2004 |
url |
http://oaspub.epa.gov/eims/eimsapi.dispdetail?deid=39198 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Office of Research and Development |
op_relation |
https://cfint.rtpnc.epa.gov/si/ntislink.cfm?dirEntryID=39198 |
_version_ |
1766387843383427072 |