Speciation and mobility of arsenic in agricultural lime
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Gerald T Schmidt
- Ka Hei Lui
- Michael Kersten
- Sammlungen
- metadata
- ISSN
- 0047-2425
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Journal of environmental quality
- Schlüsselwörter
- 550 Geowissenschaften
- 550 Earth sciences
- Sprache
- eng
- Paginierung
- Seiten: 2058 - 2069
- Datum der Veröffentlichung
- 2009
- Herausgeber
- American Soc. of Agronomy
- Herausgeber URL
- http://dx.doi.org/10.2134/jeq2008.0441
- Datum der Datenerfassung
- 2020
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Zugang
- Public
- Titel
- Speciation and mobility of arsenic in agricultural lime
- Ausgabe der Zeitschrift
- 38
Datenquelle: METADATA.UB
- Andere Metadatenquellen:
-
- Autoren
- Gerald T Schmidt
- Ka Hei Lui
- Michael Kersten
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000269627400030&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.2134/jeq2008.0441
- eISSN
- 1537-2537
- Externe Identifier
- Clarivate Analytics Document Solution ID: 492AX
- PubMed Identifier: 19704149
- ISSN
- 0047-2425
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- JOURNAL OF ENVIRONMENTAL QUALITY
- Paginierung
- 2058 - 2069
- Datum der Veröffentlichung
- 2009
- Status
- Published
- Titel
- Speciation and Mobility of Arsenic in Agricultural Lime
- Sub types
- Article
- Ausgabe der Zeitschrift
- 38
Datenquelle: Web of Science (Lite)
- Abstract
- <jats:p>Agricultural liming materials are used to correct soil acidity and to improve plant growth and microbial functionality. A relatively low‐grade agricultural lime was found to contain up to 125 mg kg<jats:sup>−1</jats:sup> arsenic (As), which is above any fertilizing materials code threshold. The color of the milled material is brown due to ample oxide dendrites. Microprobe elemental maps confirmed that these accessory oxide mineral phases are responsible for the elevated As concentrations in the limestone. The black Mn‐bearing dendrites contain minor amounts of As, whereas the brown Fe‐bearing dendrites contain the major part of the As inventory, with an Fe/As molar ratio around 100. Because the elemental maps represent only a few sample regions of interest (ROI), the results are corroborated by a bulk five‐step sequential extraction of the lime, which suggests that a majority of the As is bound to acid‐reducible phases. Because repartitioning of the As oxyanion during extraction cannot be ruled out, X‐ray absorption spectroscopy with micrometer resolution (μ‐XAS) was used as a solid‐state speciation analysis approach. The μ‐XAS results at the Fe K‐edge for the selected ROIs revealed the brown dendrites to consist of ferrihydrite and goethite, whereas those at the As K‐edge revealed that the pentavalent As species arsenate predominates, with As‐Fe distance and coordination indicating binding as a mononuclear inner‐spheric adsorbate complex. Batch experiments with soil exposed to submerged conditions of up to 41 d revealed a negligible As release rate from the lime (approximately 40 ng kg<jats:sup>−1</jats:sup> d<jats:sup>−1</jats:sup>). The results of this study corroborate regulatory codes that set the permissible As content in agricultural lime relative to the respective Fe content.</jats:p>
- Autoren
- Gerald T Schmidt
- Ka Hei Lui
- Michael Kersten
- DOI
- 10.2134/jeq2008.0441
- eISSN
- 1537-2537
- ISSN
- 0047-2425
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Journal of Environmental Quality
- Sprache
- en
- Online publication date
- 2009
- Paginierung
- 2058 - 2069
- Datum der Veröffentlichung
- 2009
- Status
- Published
- Herausgeber
- Wiley
- Herausgeber URL
- http://dx.doi.org/10.2134/jeq2008.0441
- Datum der Datenerfassung
- 2023
- Titel
- Speciation and Mobility of Arsenic in Agricultural Lime
- Ausgabe der Zeitschrift
- 38
Datenquelle: Crossref
- Abstract
- Agricultural liming materials are used to correct soil acidity and to improve plant growth and microbial functionality. A relatively low-grade agricultural lime was found to contain up to 125 mg kg(-1) arsenic (As), which is above any fertilizing materials code threshold. The color of the milled material is brown due to ample oxide dendrites. Microprobe elemental maps confirmed that these accessory oxide mineral phases are responsible for the elevated As concentrations in the limestone. The black Mn-bearing dendrites contain minor amounts of As, whereas the brown Fe-bearing dendrites contain the major part of the As inventory, with an Fe/As molar ratio around 100. Because the elemental maps represent only a few sample regions of interest (ROI), the results are corroborated by a bulk five-step sequential extraction of the lime, which suggests that a majority of the As is bound to acid-reducible phases. Because repartitioning of the As oxyanion during extraction cannot be ruled out, X-ray absorption spectroscopy with micrometer resolution (micro-XAS) was used as a solid-state speciation analysis approach. The micro-XAS results at the Fe K-edge for the selected ROIs revealed the brown dendrites to consist of ferrihydrite and goethite, whereas those at the As K-edge revealed that the pentavalent As species arsenate predominates, with As-Fe distance and coordination indicating binding as a mononuclear inner-spheric adsorbate complex. Batch experiments with soil exposed to submerged conditions of up to 41 d revealed a negligible As release rate from the lime (approximately 40 ng kg(-1) d(-1)). The results of this study corroborate regulatory codes that set the permissible As content in agricultural lime relative to the respective Fe content.
- Addresses
- Environmental Geochemistry Group, Institute of Geosciences, Becherweg 21, Johannes Gutenberg-Univ., 55099 Mainz, Germany.
- Autoren
- Gerald T Schmidt
- Ka Hei Lui
- Michael Kersten
- DOI
- 10.2134/jeq2008.0441
- eISSN
- 1537-2537
- Externe Identifier
- PubMed Identifier: 19704149
- Funding acknowledgements
- U.S. Department of Energy: DE‐AC02‐05CH11231
- Office of Science:
- Open access
- false
- ISSN
- 0047-2425
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Journal of environmental quality
- Schlüsselwörter
- Calcium Compounds
- Calcium Carbonate
- Oxides
- Arsenic
- Calcium
- Iron
- Manganese
- Spectrum Analysis
- X-Rays
- Agriculture
- Sprache
- eng
- Medium
- Electronic-Print
- Online publication date
- 2009
- Paginierung
- 2058 - 2069
- Datum der Veröffentlichung
- 2009
- Status
- Published
- Datum der Datenerfassung
- 2009
- Titel
- Speciation and mobility of arsenic in agricultural lime.
- Sub types
- Research Support, Non-U.S. Gov't
- Journal Article
- Ausgabe der Zeitschrift
- 38
Datenquelle: Europe PubMed Central
- Abstract
- Agricultural liming materials are used to correct soil acidity and to improve plant growth and microbial functionality. A relatively low-grade agricultural lime was found to contain up to 125 mg kg(-1) arsenic (As), which is above any fertilizing materials code threshold. The color of the milled material is brown due to ample oxide dendrites. Microprobe elemental maps confirmed that these accessory oxide mineral phases are responsible for the elevated As concentrations in the limestone. The black Mn-bearing dendrites contain minor amounts of As, whereas the brown Fe-bearing dendrites contain the major part of the As inventory, with an Fe/As molar ratio around 100. Because the elemental maps represent only a few sample regions of interest (ROI), the results are corroborated by a bulk five-step sequential extraction of the lime, which suggests that a majority of the As is bound to acid-reducible phases. Because repartitioning of the As oxyanion during extraction cannot be ruled out, X-ray absorption spectroscopy with micrometer resolution (micro-XAS) was used as a solid-state speciation analysis approach. The micro-XAS results at the Fe K-edge for the selected ROIs revealed the brown dendrites to consist of ferrihydrite and goethite, whereas those at the As K-edge revealed that the pentavalent As species arsenate predominates, with As-Fe distance and coordination indicating binding as a mononuclear inner-spheric adsorbate complex. Batch experiments with soil exposed to submerged conditions of up to 41 d revealed a negligible As release rate from the lime (approximately 40 ng kg(-1) d(-1)). The results of this study corroborate regulatory codes that set the permissible As content in agricultural lime relative to the respective Fe content.
- Autoren
- Gerald T Schmidt
- Ka Hei Lui
- Michael Kersten
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/19704149
- DOI
- 10.2134/jeq2008.0441
- ISSN
- 0047-2425
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- J Environ Qual
- Schlüsselwörter
- Agriculture
- Arsenic
- Calcium
- Calcium Carbonate
- Calcium Compounds
- Iron
- Manganese
- Oxides
- Spectrum Analysis
- X-Rays
- Sprache
- eng
- Country
- United States
- Paginierung
- 2058 - 2069
- PII
- 38/5/2058
- Datum der Veröffentlichung
- 2009
- Status
- Published online
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2009
- Titel
- Speciation and mobility of arsenic in agricultural lime.
- Sub types
- Journal Article
- Research Support, Non-U.S. Gov't
- Ausgabe der Zeitschrift
- 38
Datenquelle: PubMed
- Beziehungen:
- Eigentum von