Lec 9, Previous was Lec 8

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Environmental Science
Jovan Stefanovic

Toxicology: assessing chemical hazards (2) Chemical interations o Antagonist- reducing toxicity- affect of getting disease is lower o Synergeistic- albestine- directly related to lung cancer Multiple chemicals make it more difficult to measure toxicity o Ex) food additives, pesticides, and air pollution When looking at the toxicity we look at three things o 1. RECEPTOR- living organism receiving dose Imp to know how many times they are exposed ( frequency of measure) Age- children and adults are more vulnerable Genetic makeup- genes that make you non resistant General health- esp for elders o 2. DOSE- amount person receives through different roots Ingestion most common 85% Inhalation-10% Absorption- 5% o Bioavailability Acute dose: nuclear power plant accidents for example Chronic dose- repeated dose- radiation Long term- first day of life to entire life Low dose and is constant o 3. Reponse adverse human health effects can be specific or non specific Specific- we can distinguish which particular organ is affected Non specific the whole body is affected www.notesolution.com
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