tailieunhanh - Environmental Chemicals II

Examine the cause and effects of the release of an industrial cyanide/heavy metals impoundment into a major European river system. • Examine the heavy metals release from a tailings dam failure in Southwestern Spain. • Describe the science and toxicological impacts of ionizing radiation resulting from radionuclides. | Environmental Chemicals II Principles of Environmental Toxicology Instructor Gregory Möller . University of Idaho Principles of Environmental Toxicology Learning Objectives Examine the cause and effects of the release of an industrial cyanide heavy metals impoundment into a major European river system. Examine the heavy metals release from a tailings dam failure in Southwestern Spain. Describe the science and toxicological impacts of ionizing radiation resulting from radionuclides. 2 Principles of Environmental Toxicology Learning Objectives Understand the science and issues surrounding mixed waste management in the US. Examine the technological difficulties associated with subsurface radionuclide plumes of the Hanford Reservation migrating towards the Columbia River. 3 Principles of Environmental Toxicology Baia Mare Romania Cyanide leak from a gold smelter pollutes a major European river system January 2000. A cyanide-containing slurry overflowed over a 25 m length of a tailings dam. - 100 000 cubic meters of waste into the Tisza and Danube river system Europe s largest waterway. The accident wiped out fish stocks and threatened water supplies in several countries downstream from the spill. 4 Principles of Environmental Toxicology Baia Mare Romania sî Principles of Environmental Toxicology Cyanide Waste Water Heavy snows caused an overflow of a tailings dam wall. Waste water containing cyanide flowed into the adjacent Lapus River then entered the Somes River and crossed the border into Hungary before reaching the Tisza River. 5 1 Principles of Environmental Toxicology Waste Material 100 thousand cubic meters liquid waste entered the water with 7800 mg L cyanide concentration - Hungarian authorities - conservative estimate. - 100 tons cyanide. 7 Principles of Environments Acute Chronic Sub-lethal Toxicity il Toxicology Ingles Fish LETHAL EFFECTS SUBLETHAL EFFECTS ACUTE Dynamic LC50 - 96 h mg L CN CHRONIC Juniors Adults mg L CN Activity or Organ Affected Nature

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