Title

A passive sampler for ambient gaseous oxidized mercury concentrations

Document Type

Article

Journal/Book Title/Conference

Atmospheric Environment

Volume

44

Issue

2

Publisher

Elsevier

Publication Date

1-1-2010

First Page

246

Last Page

252

DOI

10.1016/j.atmosenv.2009.10.008

Abstract

This paper reports on the development of a passive sampler for estimating gaseous oxidized mercury concentrations. Atmospheric gaseous oxidized mercury concentrations calculated from passive sampler data were correlated with those obtained using an automated analyzer (r2 = 0.71, p < 0.01, n = 110 for one-week deployments; r2 = 0.89, p < 0.01, n = 22 for two-week deployments). Sampler uptake was not significantly affected by changes in temperature, humidity, or ozone concentration, but it was slightly dependent on wind speed. As such, an equation for correcting data due to this factor was developed based on wind tunnel and field data. The detection limit for a two-week sampler deployment was ∼5 pg m−3. Field data collected in Nevada and the southeastern United States showed these samplers are useful for investigating spatial and temporal variability in gaseous oxidized mercury concentrations.

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