Reply to comment on "Elevated tungsten and cobalt in airborne particulates in Fallon, Nevada: Possible implications for the childhood leukemia cluster", by Blasland, Bouck & Lee, Inc.

Paul R. Sheppard, Robert J. Speakman, Gary Ridenour, Mark L. Witten

Research output: Contribution to journalComment/debate

7 Scopus citations

Abstract

Several criticisms of Sheppard et al. (2006a) are raised in this comment. One, airborne W and Co loadings are expressed as mass of element per volume of air rather than mass of element per mass of dust and therefore cannot be reasonably interpreted. Two, inter-seasonal patterns of airborne W and Co in Fallon seem inconsistent. Three, the role of wind direction on airborne W and Co in Fallon is not clear. Four, elevated levels of airborne W and Co in Fallon do not approach threshold limits of exposure established for workplaces. Five, children of Fallon do not necessarily live near the hard-metal facility in Fallon and therefore are not exposed to elevated airborne W and Co. Six, research on total suspended particulates of Fallon was not warranted because airborne W in Fallon had been studied already. The authors respond to these criticisms as well as to additional points made in this comment.

Original languageEnglish (US)
Pages (from-to)1086-1091
Number of pages6
JournalApplied Geochemistry
Volume21
Issue number6
DOIs
StatePublished - Jun 2006

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Geochemistry and Petrology

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