A passive sampler for ambient gaseous oxidized mercury concentrations

被引:50
作者
Lyman, Seth N. [1 ]
Gustin, Mae S. [1 ]
Prestbo, Eric M. [2 ]
机构
[1] Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA
[2] Frontier Geosci, Seattle, WA 98109 USA
关键词
Passive sampler; RGM; Gaseous oxidized mercury; Atmospheric; Monitoring; PERSISTENT ORGANIC POLLUTANTS; ATMOSPHERIC MERCURY; AIR; SPECIATION; UNCERTAINTIES; BEHAVIOR; NEVADA; SITES;
D O I
10.1016/j.atmosenv.2009.10.008
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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 (r(2) = 0.71, p < 0.01, n = 110 for one-week deployments; r(2) = 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 similar to 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. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:246 / 252
页数:7
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