tailieunhanh - Mercury In The Environment

Mercury has a number of unique and fascinating properties. It is the only metal that, in its pure form, is a liquid at room temperature. Liquid mercury is volatile, meaning that it evaporates easily to form a poisonous vapour. Mercury conducts electricity and expands at a constant rate in response to changes in pressure or temperature. Electrical switches, barometers and thermometers take advantage of these properties. In its vapour state, mercury can combine with other gases to form more complex molecules that emit light when charged with electricity, hence the use of mercury in fluorescent and neon lights | Mercury In The Environment A Primer o Pollute Fkobe CLEAN AIR. CLEAN WATER. A cup of mercury is nearly fourteen times heavier than a cup of water. Source Zyra s website. POLLUTION PROBE IS A NON-PROFIT CHARITABLE ORGANIZATION THAT WORKS in partnership with all sectors of society to protect health by promoting clean air and clean water. Pollution Probe was established in 1969 following a gathering of 240 students and professors at the University of Toronto campus to discuss a series of disquieting pesticide-related stories that had appeared in the media. Early issues tackled by Pollution Probe included urging the Canadian government to ban DDT for almost all uses and campaigning for the clean-up of the Don River in Toronto. We encouraged curbside recycling in 140 Ontario communities and supported the development of the Blue Box programme. Pollution Probe has published several books including Profit from Pollution Prevention The Green Consumer Guide of which more than 225 000 copies were sold across Canada and Additive Alert. Since the 1990s Pollution Probe has focused its programmes on issues related to air pollution water pollution and human health including a major programme to remove human sources of mercury from the environment. Pollution Probe s scope has recently expanded to new concerns including the unique risks that environmental contaminants pose to children the health risks related to exposures within indoor environments and the development of innovative tools for promoting responsible environmental behaviour. Since 1993 as part of our ongoing commitment to improving air quality Pollution Probe has held an annual Clean Air Campaign during the month of June to raise awareness of the relationships among vehicle emissions smog climate change and related human respiratory problems. The Clean Air Campaign helped the Ontario Ministry of the Environment develop a mandatory vehicle emissions testing programme. Pollution Probe offers innovative and

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