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Title: Metal sorption to Spodosol Bs horizons: Organic matter complexes predominate

Authors:
; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1415664
Resource Type:
Journal Article: Published Article
Journal Name:
Chemosphere
Additional Journal Information:
Journal Volume: 196; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-05-18 12:20:21; Journal ID: ISSN 0045-6535
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Tiberg, Charlotta, Sjöstedt, Carin, and Gustafsson, Jon Petter. Metal sorption to Spodosol Bs horizons: Organic matter complexes predominate. United Kingdom: N. p., 2018. Web. doi:10.1016/j.chemosphere.2018.01.004.
Tiberg, Charlotta, Sjöstedt, Carin, & Gustafsson, Jon Petter. Metal sorption to Spodosol Bs horizons: Organic matter complexes predominate. United Kingdom. doi:10.1016/j.chemosphere.2018.01.004.
Tiberg, Charlotta, Sjöstedt, Carin, and Gustafsson, Jon Petter. Sun . "Metal sorption to Spodosol Bs horizons: Organic matter complexes predominate". United Kingdom. doi:10.1016/j.chemosphere.2018.01.004.
@article{osti_1415664,
title = {Metal sorption to Spodosol Bs horizons: Organic matter complexes predominate},
author = {Tiberg, Charlotta and Sjöstedt, Carin and Gustafsson, Jon Petter},
abstractNote = {},
doi = {10.1016/j.chemosphere.2018.01.004},
journal = {Chemosphere},
number = C,
volume = 196,
place = {United Kingdom},
year = {Sun Apr 01 00:00:00 EDT 2018},
month = {Sun Apr 01 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.chemosphere.2018.01.004

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  • Carbon cycling in soils is an important process that involves the movement of large amounts of dissolved organic carbon (DOC) within the soil profile. Recent work in a variety of soils has indicated that DOC sorption properties of mineral horizons play an important role in the retention of DOC. As part of the Watershed Manipulation Project at Bear Brook Watershed in Maine (BBWM), the solubilization and movement of carbon in terrestrial and aquatic ecosystems were evaluated. For the study, the objectives were to: (1) determine the sorption properties of mineral horizons present on the BBWM watersheds for SO4 and DOC;more » (2) evaluate the effect of solution pH and temperature on soil DOC sorption; and (3) examine competitive sorption effects between DOC and SO4.« less
  • A laboratory study was conducted to examine acidification and recovery of a Spodosol Bs horizon from acidic deposition in the Bear Brook Watershed (BBW) in central Maine. A mechanical vacuum extractor was used to draw solutions through a soil column at three treatments containing 40, 100, or 160 {mu}mol/L SO{sub 4}{sup 2{minus}}. Following 44 days of leaching, all treatments were decreased to the 40 {mu}mol/L SO{sub 4}{sup 2{minus}} level to examine recovery from acidification. Acid additions were initially neutralized by release of basic cations and sulfate adsorption. Following attainment of steady-state conditions for basic cations and SO{sub 4}{sup 2{minus}} withmore » respect to the soil adsorption complex, Al dissolution was the primary neutralization mechanism. Aqueous Al activities appeared to be regulated by equilibrium with an Al(OH){sub 3} mineral phase. Following decreases in acid loadings, recovery was rapid resulting in retention of basic cations, reversible release of SO{sub 4}{sup 2{minus}}, and a marked reduction in the concentrations of soluble Al.« less
  • The present study was undertaken to verify some of the assumptions involved in the modeling of Al geochemistry in Spodosols of the northeastern USA. Specific objectives were to determine if there is a mineral phase in the Bs horizons which regulates Al(3+) activities, evaluate the rate at which precipitation and dissolution reactions occur with the controlling mineral phase (referred to as Al(OH)3 precipitation hereafter, since the specific reactions controlling Al(3+) activity in soil solutions are unknown), and provide process-level information for the development of simulation models that depict Al retention/release and the acidification of drainage waters. The Bs horizon wasmore » chosen because it is the soil horizon thought to most influence surface water chemistry in these shallow Spodosols.« less
  • In the research conducted the complexation of Cu/sup 2 +/ by an Armadale Horizons Bh fulvic acid sample was studied to facilitate the program. The use of literature-based stability constants for the Cu/sup 2 +/ ion complexes species formed with the different sites deduced from the design of the experimental program led to a capability for predicting the binding of macro quantities of Cu(II) to Armadale Horizon Bh fulvic acid as a function of degree of neutralization, ionic strength, and metal ion and fulvic acid concentration. The predictive quality provided by such assignment of binding parameters is felt to providemore » strong corroborative support for the deduced site assignments and thus for the model itself. 10 references, 6 figures, 5 tables.« less