 |
Toxic substances found in the Great Lakes are often associated with human reliance on the element chlorine. Chlorinated compounds have been used for controlling insects in agriculture, plumbing in a house, and melting the ice during winter. However, like the back side of a sword, major sources of toxic contamination in the Great Lakes also came from chlorine compounds including DDT, PCB, and TCDD. Other toxic chemicals include heavy metals like mercury. |
 |
1. What traits of chemicals determine
whether they will pose an environmental hazard?
2. How does the accumulation of toxic chemicals relate to size and age of fish? List toxins which are often identified in sediments and kinds of fish that are used for fish consumption warning. 3. Draw a map that indicates areas of concern with respect to water quality and toxic chemicals. |
|
|
|
 |
1. Lake Erie water quality: Past, present
and future. (free. FS-046)
2. Lake Erie water quality during the 1970s and early 80's. (free. FS-040) 3. Ohio's Areas of Concern. (free. FS-041) For more information, visit OSG website or call OSG office at 614/ 292-8949. |
|
|
|
 |
1. The Great Lake Erie
2. Great Lakes Instructional Materials for the Changing Earth System 3. Earth Systems - Education Activities for Great Lakes Schools
Life in the Great Lakes |
|
|
|
 |
Forty-Three Areas of Concern |
|
|
|
 |
1. Critical
Pollutants in the Great Lakes http://www.seagrant.wisc.edu/communications/publications/ One-pagers/CriticalPollutants.html 2. The Great Lakes Toxic Substances Control Agreement http://www.cglg.org/pub/toxics/index.html 3. Airborne
Contaminants and the Great Lakes 5. Great Lakes Human Health
Effects Research Program 6. The Canadian Chlorine Coordinating Committee |