Effects of acid precipitation on soil leachate quality: computer calculations
The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in 23 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. B...
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ftosti:oai:osti.gov:6458528 2023-07-30T04:02:56+02:00 Effects of acid precipitation on soil leachate quality: computer calculations Sposito, G. Page, A.L. Frink, M.E. 2022-09-20 application/pdf http://www.osti.gov/servlets/purl/6458528 https://www.osti.gov/biblio/6458528 https://doi.org/10.2172/6458528 unknown http://www.osti.gov/servlets/purl/6458528 https://www.osti.gov/biblio/6458528 https://doi.org/10.2172/6458528 doi:10.2172/6458528 54 ENVIRONMENTAL SCIENCES 60 APPLIED LIFE SCIENCES ACID RAIN ENVIRONMENTAL EFFECTS SOIL CHEMISTRY RESPONSE MODIFYING FACTORS AGRICULTURE COMPUTER CALCULATIONS FERTILITY G CODES LEACHING MINERALS PH VALUE ATMOSPHERIC PRECIPITATIONS CHEMISTRY COMPUTER CODES DISSOLUTION INDUSTRY RAIN SEPARATION PROCESSES 2022 ftosti https://doi.org/10.2172/6458528 2023-07-11T10:48:39Z The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in 23 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 the sample 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. The higher levels found were caused by the lower pH value of acid precipitation as well as by complexes formed with inorganic and organic ligands. It was also shown that soil cation exchangers would adsorb preferentially heavy metals, such as Cd and Pb, which are found in acid precipitation. Other/Unknown Material Carbonic acid SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
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topic |
54 ENVIRONMENTAL SCIENCES 60 APPLIED LIFE SCIENCES ACID RAIN ENVIRONMENTAL EFFECTS SOIL CHEMISTRY RESPONSE MODIFYING FACTORS AGRICULTURE COMPUTER CALCULATIONS FERTILITY G CODES LEACHING MINERALS PH VALUE ATMOSPHERIC PRECIPITATIONS CHEMISTRY COMPUTER CODES DISSOLUTION INDUSTRY RAIN SEPARATION PROCESSES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES 60 APPLIED LIFE SCIENCES ACID RAIN ENVIRONMENTAL EFFECTS SOIL CHEMISTRY RESPONSE MODIFYING FACTORS AGRICULTURE COMPUTER CALCULATIONS FERTILITY G CODES LEACHING MINERALS PH VALUE ATMOSPHERIC PRECIPITATIONS CHEMISTRY COMPUTER CODES DISSOLUTION INDUSTRY RAIN SEPARATION PROCESSES Sposito, G. Page, A.L. Frink, M.E. Effects of acid precipitation on soil leachate quality: computer calculations |
topic_facet |
54 ENVIRONMENTAL SCIENCES 60 APPLIED LIFE SCIENCES ACID RAIN ENVIRONMENTAL EFFECTS SOIL CHEMISTRY RESPONSE MODIFYING FACTORS AGRICULTURE COMPUTER CALCULATIONS FERTILITY G CODES LEACHING MINERALS PH VALUE ATMOSPHERIC PRECIPITATIONS CHEMISTRY COMPUTER CODES DISSOLUTION INDUSTRY RAIN SEPARATION PROCESSES |
description |
The multipurpose computer program GEOCHEM was employed to calculate the equilibrium speciation in 23 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 the sample 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. The higher levels found were caused by the lower pH value of acid precipitation as well as by complexes formed with inorganic and organic ligands. It was also shown that soil cation exchangers would adsorb preferentially heavy metals, such as Cd and Pb, which are found in acid precipitation. |
author |
Sposito, G. Page, A.L. Frink, M.E. |
author_facet |
Sposito, G. Page, A.L. Frink, M.E. |
author_sort |
Sposito, G. |
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 |
2022 |
url |
http://www.osti.gov/servlets/purl/6458528 https://www.osti.gov/biblio/6458528 https://doi.org/10.2172/6458528 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
http://www.osti.gov/servlets/purl/6458528 https://www.osti.gov/biblio/6458528 https://doi.org/10.2172/6458528 doi:10.2172/6458528 |
op_doi |
https://doi.org/10.2172/6458528 |
_version_ |
1772813822688493568 |