TO-067 — 14:30 – 14:45

EFFECTS OF BELOWGROUND WARMING ON PEAT POREWATER TOTAL MERCURY AND METHYLMERCURY CONCENTRATIONS: EARLY RESULTS FROM SPRUCE

Authors: KOLKA, Randy 1 ; NATER, Ed 2 ; SEBESTYEN, Steve 1 ; TONER, Brandy 2 ; GUTKNECHT, Jessica 2 ; PSARSKA, Sona 2 ;
(1) USDA Forest Service Northern Research Station, Grand Rapids, MN, USA; (2) University of Minnesota, St. Paul, MN, USA

TO-068 — 14:45 – 15:00

MERCURY AND METHYLMERCURY IN TRIBUTARY INPUTS TO KLUANE LAKE, YUKON TERRITORY, CANADA

Authors: BRANFIREUN, Brian 1 ; SWANSON, Heidi 2 ; ZABEL, Nelson 2 ;
(1) University of Western Ontario, London, Ontario, Canada; (2) University of Waterloo, Waterloo, Ontario, Canada

TO-069 — 15:00 – 15:15

EFFECT OF LOW-MOLECULAR-WEIGHT ORGANIC ACIDS ON MERCURY TRANSFORMATION IN SOIL IN WATER-LEVEL FLUCTUATION ZONE OF THREE GORGES RESERVOIR, CHINA

Authors: YIN, Deliang 1 ; WANG, Yongmin 1 ; ZHANG, Cheng 1 ; WANG, Dingyong 1 ;
(1) College of Resources and Environment, Southwest University, Beibei/Chongqing, China

TO-070 — 15:15 – 15:30

SEASONALITY OF MEHG INPUT, OUTPUT, FORMATION AND DEGRADATION IN A HUMIC BOREAL LAKE IN RELATION TO THE CHEMICAL SPECIATION OF HG, FE AND S

Authors: SKYLLBERG, Ulf 1 ; PERSSON, Anna 1 ; TJERNGREN, Ida 1 ; KRONBERG, Rose-Marie 1 ; DROTT, Andreas 1 ; MEILI, Markus 2 ; BJÖRN, Erik 3 ;
(1) Swedish University of Agricultural Sciences, Umeå, Sweden; (2) Stockholm University, Stockholm, Sweden; (3) Umeå University, Umeå, Sweden

TO-071 — 15:30 – 15:45

DISSOLVED ORGANIC MATTER AND NUTRIENT CONTROLS ON AQUEOUS MERCURY SPECIATION IN ALASKAN WETLANDS

Authors: POULIN, Brett 1 ; RYAN, Joseph 2 ; KRABBENHOFT, David 3 ; BARKAY, Tamar 4 ; HINES, Mark 5 ; AIKEN, George 1 ;
(1) U.S. Geological Survey, Boulder, CO, United States; (2) University of Colorado Boulder, Boulder, CO, United States; (3) U.S. Geological Survey, Middleton, WI, United States; (4) Rutgers University, New Brunswick, NJ, United States; (5) University of Massachusetts Lowell, Lowell, MA, United States

TO-072 — 15:45 – 16:00

THE ROLE OF DOM IN CATCHMENT AND LAKE MERCURY CYCLING IN A BOREAL LAKE CATCHMENT

Authors: DE WIT, Heleen 1 ; BRAATEN, Hans 1 ; KRZEMINSKI, Pawel 1 ; LUND, Espen 1 ; MARTINEZ-FRANCÉS, Elena 2 ; ONG, Stevenson 2 ; VOGT, Rolf 2 ;
(1) Norwegian Institute for Water Research, Oslo, Norway; (2) University of Oslo, Oslo, Norway

TO-073 — 16:00 – 16:15

DISSOLVED ORGANIC MATTER CONTROLS MERCURY PHOTOREACTIONS IN WATER

Authors: KLAPSTEIN, Sara 1 ; ZIEGLER, Susan 2 ; RISK, David 3 ; O'DRISCOLL, Nelson 1 ;
(1) Acadia University, Wolfville, Nova Scotia, Canada; (2) Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada; (3) St. Francis Xavier University, Antigonish, Nova Scotia, Canada

TO-074 — 16:15 – 16:30

PROBING THE DOM-MEDIATED PHOTODEGRADATION OF METHYLMERCURY BY USING ORGANIC LIGANDS WITH DIFFERENT MOLECULAR STRUCTURE AS DOM MODEL

Authors: ZHANG, Xiaoyan 1 ; LI, Yanbin 2 ; YIN, Yongguang 1 ; CAI, Yong 3 ; LIU, Jingfu 1 ; JIANG, Guibin 1 ;
(1) State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; (2) Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China; (3) Department of Chemistry and Biochemistry, Florida International University, Miami, USA