Spatial patterns of tungsten and cobalt on leaf surfaces of trees in Fallon, Nevada

Paul Sheppard, Christine L. Hallman, Gary Rldenour, Mark L. Witten

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Spatial patterns of airborne tungsten and cobalt are described from leaf-surface chemistry of trees in Fallon, Nevada, where a cluster of childhood leukemia has been ongoing since 1997. In earlier research, airborne tungsten and cobalt have been shown to be elevated in total suspended particulates, surface dust, and lichens from Fallon. To update data on the spatial patterns of airborne tungsten and cobalt in Fallon, leaves were collected in October 2007 from trees growing throughout Fallon. Collected leaves were measured for metals accumulated onto their surfaces. On Fallon leaf surfaces, tungsten and cobalt show maxima of 17 ppm and 6 ppm, respectively, near the center of town, north of Highway 50 and west of Highway 95. These two peaks overlap spatially, and given the dense and widespread pattern of collection, the source area of these two airborne metals can be pinpointed to the vicinity of a hard-metal industry located north of Highway 50 and west of Highway 95. Fallon is distinctive in west central Nevada for its elevated airborne tungsten and cobalt particulates, and given its cluster of childhood leukemia cases, it stands to reason that additional biomedical research is in order to test directly the leukogenicity of combined airborne tungsten and cobalt particulates.

Original languageEnglish (US)
Pages (from-to)31-41
Number of pages11
JournalLand Contamination and Reclamation
Volume17
Issue number1
DOIs
StatePublished - 2009

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tungsten
cobalt
Tungsten
Cobalt
road
Metals
metals industry
metal
Surface chemistry
lichen
Dust
dust
Industry

Keywords

  • Childhood leukemia
  • Cobalt
  • Fallon
  • Leaf-surface chemistry
  • Nevada
  • Tungsten

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Water Science and Technology
  • Environmental Science(all)

Cite this

Spatial patterns of tungsten and cobalt on leaf surfaces of trees in Fallon, Nevada. / Sheppard, Paul; Hallman, Christine L.; Rldenour, Gary; Witten, Mark L.

In: Land Contamination and Reclamation, Vol. 17, No. 1, 2009, p. 31-41.

Research output: Contribution to journalArticle

Sheppard, Paul ; Hallman, Christine L. ; Rldenour, Gary ; Witten, Mark L. / Spatial patterns of tungsten and cobalt on leaf surfaces of trees in Fallon, Nevada. In: Land Contamination and Reclamation. 2009 ; Vol. 17, No. 1. pp. 31-41.
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