Gaseous mercury fluxes from the forest floor of the Adirondacks

被引：86

作者：

Choi, Hyun-Deok ^{[1
]}

Holsen, Thomas M. ^{[1
]}

机构：

[1] Clarkson Univ, Dept Civil & Environm Engn, Potsdam, NY 13699 USA

来源：

ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 02期

基金：

美国国家科学基金会;

关键词：

Mercury emission flux; Dynamic flux chamber (DFC); Empirical model; Mercury mass balance; Forest canopy; TERRESTRIAL BACKGROUND SURFACES; ATMOSPHERIC MERCURY; ELEMENTAL MERCURY; AIR/SURFACE EXCHANGE; CHAMBER MEASUREMENT; EMISSION FLUXES; EASTERN USA; SOILS; PRECIPITATION; MODEL;

D O I：

10.1016/j.envpol.2008.08.020

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The flux of gaseous elemental mercury (Hg-0) from the forest floor of the Adirondack Mountains in New York (USA) was measured numerous times throughout 2005 and 2006 using a polycarbonate dynamic flux chamber (DFC). The Hg flux ranged between -2.5 and 27.2 ng m(-2) h(-1) and was positively correlated with temperature and solar radiation. The measured Hg emission flux was highest in spring, and summer, and lowest in winter. During leaf-off periods, the Hg emission flux was highly dependent on solar radiation and less dependent on temperature. During leaf-on periods, the Hg emission flux was fairly constant because the forest canopy was shading the forest floor. Two empirical models were developed to estimate yearly He emissions, one for the leaf-off period and one for the leaf-on period. Using the U.S. EPA's CASTNET meteorological data, the cumulative estimated emission flux was approx. 7.0 mu g Hg-0 m(-2) year(-1). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：592 / 600

页数：9

共 54 条

[1] Bacterial mercury resistance from atoms to ecosystems
Barkay, T
Miller, SM
Summers, AO
[J]. FEMS MICROBIOLOGY REVIEWS, 2003, 27 (2-3) : 355 - 384
[2] Sunlight-mediated emission of elemental mercury from soil amended with municipal sewage sludge
Carpi, A
Lindberg, SE
[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (07) : 2085 - 2091
[3] Application of a Teflon™ dynamic flux chamber for quantifying soil mercury flux:: Tests and results over background soil
Carpi, A
Lindberg, SE
[J]. ATMOSPHERIC ENVIRONMENT, 1998, 32 (05) : 873 - 882
[4] Analytical artifacts produced by a polycarbonate chamber compared to a Teflon chamber for measuring surface mercury fluxes
Carpi, Anthony
Frei, Allan
Cocris, Daniel
McCloskey, Rachel
Contreras, Elisabeth
Ferguson, Kylie
[J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2007, 388 (02) : 361 - 365
[5] CHOI HD, ENV POLLUTION UNPUB
[6] Mercury deposition in the Adirondacks: A comparison between precipitation and throughfall
Choi, Hyun-Deok
Sharac, Timothy J.
Holsen, Thomas M.
[J]. ATMOSPHERIC ENVIRONMENT, 2008, 42 (08) : 1818 - 1827
[7] Scaling of atmospheric mercury emissions from three naturally enriched areas: Flowery Peak, Nevada; Peavine Peak, Nevada; and Long Valley Caldera, California
Engle, MA
Gustin, MS
[J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2002, 290 (1-3) : 91 - 104
[8] Quantifying natural source mercury emissions from the Ivanhoe Mining District, north-central Nevada, USA
Engle, MA
Gustin, MS
Zhang, H
[J]. ATMOSPHERIC ENVIRONMENT, 2001, 35 (23) : 3987 - 3997
[9] Air-soil exchange of mercury from background soils in the United States
Ericksen, J. A.
Gustin, M. S.
Xin, M.
Weisberg, P. J.
Fernandez, G. C. J.
[J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2006, 366 (2-3) : 851 - 863
[10] ERICKSEN JA, 2005, ENVIRON SCI TECHNOL, P8001

← 1 2 3 4 5 6 →