Home About Browse Search
Svenska


Silver(I) binding properties of organic soil materials are different from those of isolated humic substances

Berggren Kleja, Dan and Shibutani, Satomi and Persson, Ingmar and Gustafsson, Jon Petter (2016). Silver(I) binding properties of organic soil materials are different from those of isolated humic substances. Environmental science & technology (online). 50:14, 7453-7460
[Journal article]

[img]
Preview
PDF - Accepted Version
1MB

Abstract

The solubility of silver(I) in many soils is controlled by complexation reactions with organic matter. In this work we have compared the ability of isolated humic and fulvic acids to bind silver(I) with that of mor and peat materials. One new data set for Suwannee River Fulvic Acid was produced, which was consistent with published data sets for isolated fulvic and humic acids. The ability of soil materials to bind silver(I) was studied as a function of pH in the range 2.5-5.0, at a wide range of silver(I)-to-soil ratios (10(-4.2) - 10(-1.9) mol kg(-1)). By calibrating the Stockholm Humic Model on the humic and fulvic acids data sets, we showed that binding of silver(I) to both types of soil materials was much stronger (up to 2 orders of magnitude) than predicted from the silver(I) binding properties of the isolated humic materials. Thus, the approach taken for many other metals, that is, to model solubility in soils by using metal and proton binding parameters derived from isolated humic and fulvic acids, cannot be used for silver(I). One possible explanation for the discrepancy could be that silver(I) predominately interacted with various biomolecules in the soil samples, instead of humic- and fulvic-acid type materials.

Authors/Creators:Berggren Kleja, Dan and Shibutani, Satomi and Persson, Ingmar and Gustafsson, Jon Petter
Title:Silver(I) binding properties of organic soil materials are different from those of isolated humic substances
Series/Journal:Environmental science & technology (online) (1520-5851)
Year of publishing :2016
Volume:50
Number:14
Page range:7453-7460
Number of Pages:8
Publisher:American Chemical Society
ISSN:1520-5851
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:P Natural resources > P33 Soil chemistry and physics
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Geochemistry
Keywords:silver, soils, complexation, mobility in natural systems
URN:NBN:urn:nbn:se:slu:epsilon-e-4209
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4209
ID Code:14369
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment

(NL, NJ) > Department of Chemistry and Biotechnology (140101-161231)
Deposited By: SLUpub Connector
Deposited On:31 May 2017 08:26
Metadata Last Modified:15 Jun 2017 23:15

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits