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Lecture 4

EES 1080 Lecture 4: Environmental Health and Toxicology (1)

by OneClass2484555 , Spring 2017
1 Page
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Department
Earth & Environmental Sciences
Course Code
EES 1080
Professor
Dorale
Lecture
4

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Synthetic chemicals- compounds that are formed through a chemical process and are ubiquitous
in our everyday lives (Our knowledge has changed over time)
Types of Synthetic Chemicals
Chemicals in Commerce 100,000
Industrial Chemicals 72,000
Pesticides 600
Food Additives 8,700
Cosmetic Ingredients 7,500
Human Pharmaceuticals 3,300
New Chemicals Introduced per year 2,000
Toxicants- toxic agents introduced into the environment
1. Carcinogens- cancer causing
2. Mingens- cause mutations of DNA
3. Teratogens- affect development of who the fuck knows cause he skipped passed the slide
Endocrine Disruptors- Mimic the structure of hormone molecules
-Ex: Bisphenol A, Atrazine
Neurotoxin- a poison that attacks the nervous system
-EX: Lead
Food webs can be plagued by the process of bioaccumulation and biomagnification
-EX: PCB’s, DDT, Mercury
Toxicants have far reaching effects that scope globally (Table 14.1)
Pharmaceuticals, Hormones, and other Organic Wastewater Contaminants in U.S.
Streams, 1999-2000 (reading)
-Found an overwhelming amount of chemicals from humans in the Iowa River
Movie: “Big River”
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Description
Synthetic chemicals compounds that are formed through a chemical process and are ubiquitous in our everyday lives (Our knowledge has changed over time) Types of Synthetic Chemicals Chemicals in Commerce 100,000 Industrial Chemicals 72,000 Pesticides 600 Food Additives 8,700 Cosmetic Ingredients 7,500 Human Pharmaceuticals 3,300 New Chemicals Introduced per year 2,000 Toxicants toxic agents introduced into the environment 1. Carcinogens cancer causing 2. Mingens cause mutations of DNA 3. Teratogens affect development of who the fuck knows cause he skipped passed the slide Endocrine Disruptors Mimic the structure of hormone molecules Ex: Bisphenol A, Atrazine Neurotoxin a poison that attacks the nervous system EX: Lead Food webs can be plagued by the process of bioaccumulation and biomagnification EX: PCBs, DDT, Mercury Toxicants have far reaching effects that scope globally (Table 14.1) Pharmaceuticals, Hormones, and other Organic Wastewater Contaminants in U.S. Streams, 19992000 (reading) Found an overwhelming amount of chemicals from humans in the Iowa River Movie: Big River
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