CHEM 2800 Lecture Notes - Photosynthesis, Sulfuric Acid, Specific Gravity

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Disease burden is the impact of a health issue measured by economic factors, mortality, morbidity, etc. Adjusted life years are the measure of a disease burden; they are adjusted for quality and quantity of life years. Dose-response relationship: within a population the majority of responses are similar. Some individuals are susceptible and others resistant: normally distributed, the point at which an effect toxicity first appears is the threshold. Loael: lowest dose at which an effect was observed (use data points, not curve) Indicative of the solubility of a chemical in water based the concentrations of a substance in the octanol and water partitions of a two-phase system at equilibrium. In hydrogeology it is known as kow: kow<1 highly soluble in water, hydrophilic, kow>4 will lead to toxic build-up of compounds in fatty tissues. Log koc<1. 5 negligible sorption to soil, rapid migration to ground water. Log koc>4. 5 very strong sorption to soil, negligible migration to ground water.