Mercury Emission to the Atmosphere from Experimental Manipulation of DOC and UVR in Mesoscale Field Chambers in a Freshwater Lake

STEPHEN   C.   PETERS; JENNIFER   L.   WOLLENBERG; DONALD   P.   MORRIS; JASON   A.   PORTER

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Mercury Emission to the Atmosphere from Experimental Manipulation of DOC and UVR in Mesoscale Field Chambers in a Freshwater Lake

机译：在淡水湖中尺度野外试验室中对DOC和UVR的实验操纵向大气中的汞排放

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Mesocosm experiments in an optically transparent lake allow the manipulation of both dissolved organic carbon (DOC) and incident ultraviolet radiation (UVR) in order to study mercury reduction and emission processes. In the absence of UVR and the presence of visible light, mercury emission is very low (～0.3 ng/m~2/h). When UVR is permitted in the mesocosm chambers, mercury emission increases, with emission rates ranging from 0.3 to 2.5 ng/m~2/h. At concentrations between 1.5 and 2.5 mg/L DOC, mercury emission does not appear to depend on either the concentration or the optical properties of the DOC. In particular, the addition of 1.0 mg/L DOC from a nearby wetland to a photobleached mesocosm did not increase the emission of mercury.

机译：在光学透明的湖泊中进行的介观实验允许对溶解的有机碳（DOC）和入射紫外线（UVR）进行操纵，以研究汞的减少和排放过程。在没有紫外线辐射和可见光的情况下，汞排放非常低（〜0.3 ng / m〜2 / h）。当在中观腔室中允许UVR时，汞排放增加，排放速率在0.3到2.5 ng / m〜2 / h之间。在DOC浓度在1.5和2.5 mg / L之间时，汞的排放似乎不取决于DOC的浓度或光学性质。尤其是，从附近的湿地向光漂白的中观世界添加1.0 mg / L DOC不会增加汞的排放。

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来源
《Environmental Science & Technology》 |2007年第21期|7356-7362|共7页
作者
STEPHEN C. PETERS; JENNIFER L. WOLLENBERG; DONALD P. MORRIS; JASON A. PORTER;
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作者单位

Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, Pennsylvania 18015;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类环境化学;
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机译：从淡水湖中的Mescle野外腔室中的DOC和UVR实验操纵到大气中的汞排放

Mercury Emission to the Atmosphere from Experimental Manipulation of DOC and UVR in Mesoscale Field Chambers in a Freshwater Lake

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