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Chalmers team develops method to reduce levels of mercury in sulfuric acid

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Researchers at Chalmers University of Technology, Sweden, have developed a method that can reduce the levels of mercury in sulfuric acid by more than 90%, even from low levels. It is therefore a worldwide challenge that sulfuric acid often contains one of the most toxic substances: mercury.

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Inorganic mercury converted to more toxic and bio-accumulative monomethylmercury in ocean waters, possibly by microbes

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A team led by the University of Alberta has confirmed that inorganic mercury (Hg) found worldwide in ocean water is transformed into monomethylmercury (MMHg)—a potent and bio-accumulative neurotoxin—in the seawater. In a 1991 paper discussing concerns with mercury and monomethylmercury, William F. 159-166.

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WHO attributes more than 1 in 4 deaths annually of children under 5 years to unhealthy environment

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Most of these diseases and conditions are at least partially caused by the environment, the World Health Organization (WHO) reports. Children are especially vulnerable to environmental threats due to their developing organs and immune systems, smaller bodies and airways. Harmful exposures can start as early as in utero.

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Harvard study finds human health risks from Canadian hydroelectric projects

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Microbes convert naturally occurring mercury in soils into methylmercury in newly flooded soils—such as when dams are built for hydroelectric projects—by degradation of labile organic carbon and associated changes in geochemical conditions. fold increase in estuarine surface waters.

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Final session on international mercury convention this week expected to culminate in agreement; UNEP Global Mercury Assessment 2013 finds industrial source Hg emissions may be rising

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The fifth and final session of negotiations on the establishment of an international mercury convention—International Negotiating Committee on Mercury (INC5)—is taking place this coming week in Geneva. UNEP produced its first Global Mercury Assessment in 2002 and a subsequent study in 2007.

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Study finds changes in the Arctic sea ice cover may be driving changes in atmospheric chemistry

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Bromine then reacts with a gaseous form of mercury, turning it into a pollutant that falls to Earth’s surface. In the spring of 2008, satellites detected increased concentrations of bromine, which were associated with a decrease of gaseous mercury and ozone.

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University of Alberta Researchers Find That Oil Sands Industry Is Releasing More Pollutants Into Athabasca River System Than Previously Estimated

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Contrary to claims made by industry and government in the popular press, the oil sands industry substantially increases loadings of toxic PPE [priority pollutants] to the AR and its tributaries via air and water pathways. The pollutants found include mercury, arsenic, lead and cadmium.

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