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CH3041
ENVIRONMENTAL CHEMISTRY II
Environmental Chemistry     - a definition
• The study of sources, reactions, transport,
effects, and fates of chemical species in
the air, water and soil environments.
History
• The study of chemistry in the natural
environment has a long history as this 
is essentially where chemistry started from.
• Wöhler(1828) NH4+OCN-  ®  H2N-C(=O)-NH2
     ammonium cyanate inorganic ® urea organic
• Pollution chemistry started in the 1970’s.
Rachel Carson’s Silent Spring (1962) DDT .
Carson – large bird kills started the book.
Until 1828, it was believed that organic substances (i.e., protoplasm) could only be formed under
the influence of the vital force in the bodies of animals and plants.
Urea a compound known to be produced only by biological organisms could be produced in a laboratory