Importance of the forest canopy to fluxes of methyl mercury and total mercury to boreal ecosystems

Article Abstract:

Litterfall and thoroughfall samples under the canopy of forest in the Experimental Lakes Area (ELA) in northwestern Ontario are studied for levels of total mercury (THg) and methyl mercury (MeHg) to determine the method of Hg deposition on the forest floor. Graphs show the thoroughfall and litterfall levels of Hg for various sites in the ELA, and are compared to other sites in the United States and Scandanavia.

Canada, Science & research, Ontario, Mercury, Statistical Data Included

---

Measurement of cadmium (II) and calcium (II) complexation by fulvic acids using (super 113)Cd NMR

Article Abstract:

This study of the complexation of the metal ions Cd(II) and Ca(II) with several fulvic acids using (super 113) Cd nuclear magnetic resonance (NMR) spectroscopy shows that Cd(II) predominately binds to the oxygen containing functional groups of the fulvic acids. This approach can determine the average binding constants of Cd(II) and Ca(II).

United States, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Cadmium, Calcium, Brief Article, Measurement, Pollution, Calcium (Chemical element), Fulvic acids

---

Production and loss of methylmercury and loss of total mercury from boreal forest catchments containing different types of wetlands

Article Abstract:

The magnitude of four terrestrial boreal forest catchments as sources or sinks for methylmercury (MeHg) andd total mercury (THg) was studied at the Experimental Lakes Area in northwestern Ontario. Results showed that all catchments were sinks for THg but there was wide variation in the strength of the catchments as sinks for MeHg. This variation was apparently due to the differences in hydrology within the wetlands. The wetlands were greater sources of MeHg during years of high water yield than during low water yield years.

Wetlands, Methylmercury, Methylmercury compounds, Mercury

Similar abstracts:

• Abstracts: Multivariate analysis of U.K. salt marsh sediment contaminant data with reference to the significance of PCB contamination
• Abstracts: Monitoring biodegradation of methyl tert-butyl ether (MTBE) using compound-specific carbon isotope anaysis. Potential aerobic MTBE biodegradation
• Abstracts: Project skyhook: a "smart" material that transforms from a liquid to solid state on cue is beginning to show up in prosthetics, automobiles and other applications
• Abstracts: Changes in deposition of phytoplankton constituents in a Ca(2+) polluted lake. Kinetics of Cr(VI) reduction by carbonate green rust

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.