Cited by 70Heavy metals in environmentEnvironmental and Analytical Chemistry StudiesHeavy Metal Exposure and Toxicity

Chemical stabilisation of lead in shooting range soils with phosphate and magnesium oxide: synchrotron investigation

Sanderson, Peter, Naidu, Ravi, Bolan, Nanthi, Lim, Jung Eun, Ok, Yong Sik·2015·Journal of Hazardous Materials

Abstract

Three Australian shooting range soils were treated with phosphate and magnesium oxide, or a combination of both to chemically stabilize Pb. Lead speciation was determined after 1 month ageing by X-ray absorption spectroscopy combined with linear combination fitting in control and treated soils. The predominant Pb species in untreated soils were iron oxide bound Pb, humic acid bound Pb and the mineral litharge. Treatment with phosphate resulted in substantial pyromorphite formation in two of the soils (TV and PE), accounting for up to 38% of Pb species present, despite the addition of excess phosphate. In MgO treated soils only, up to 43% of Pb was associated with MgO. Litharge and Pb hydroxide also formed as a result of MgO addition in the soils. Application of MgO after P treatment increased hydroxypyromorphite/pyromorphite formation relative to soils teated with phosphate only. X-ray diffraction and Scanning electron microscopy revealed PbO precipitate on the surface of MgO. Soil pH, (5.3-9.3) was an important parameter, as was the solubility of existing Pb species. The use of direct means of determination of the stabilisation of metals such as by X-ray absorption spectroscopy is desirable, particularly in relation to understanding long term stability of the immobilised contaminants.

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Crossref · 10.1016/j.jhazmat.2015.06.056

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Authors
Sanderson, P., Naidu, R., Bolan, N., Lim, J. E., & Ok, Y. S.
Affiliations
  • University of South Australia (AU)
  • Kangwon National University (KR)
Corresponding author
Naidu, Ravi
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2015-12
Volume
299
Pages
395-403
ISSN
0304-3894 (ISSN-L)
OpenAlex
W856248917
Cited by
69
References
72
Citations by year
2026: 2 · 2025: 6 · 2024: 3 · 2023: 7 · 2022: 1 · 2021: 7 · 2020: 9 · 2019: 12 · 2018: 9 · 2017: 8 · 2016: 5
FWCI
4.23
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
  • Cooperative Research Centre for Contamination Assessment and Remediation of the Environment
  • Australian Synchrotron
Topics
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Heavy Metal Exposure and Toxicity
Keywords
lead stabilization, shooting range soils, phosphate, magnesium oxide, lead speciation, pyromorphite, litharge, soil pH, contaminant immobilization, synchrotron X-ray absorption spectroscopy
MeSH terms
Firearms, Lead, Magnesium Oxide, Microscopy, Electron, Scanning, Phosphates, Soil Pollutants, X-Ray Diffraction, Synchrotrons

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