Unit 3; Energy and environmental pollution; General properties of pollutants
- Created by: Former Member
- Created on: 08-11-16 18:02
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- General Properties of Pollutants
- State of Matter
- gas e.g. CO2
- liquid e.g.oil
- solid
- Density
- dense material settle close to source
- Persistence / Degradability
- time taken for material to breakdown
- Toxicity
- damage proteins by enzyme inhibition
- Chemical Reactivity
- high reactivity is more biologically damaging but less persistent
- Solubility
- water soluble pollutants are mobile in hydrosere
- lipo-soluble pollutants bio-accumulate in organism tissues
- Mobility
- measuring how pollutant carried by wind/water /organisms
- Bio-accumulation
- absorption of pollutants into an organisms tissues
- Bio-magnification
- increase in pollutant concentration as moves along food chain
- Synergistic action
- interactions of pollutants to make greater impact that sum of individuals
- Mutagenic action
- alteration of DNA struture
- Carcinogenic Action
- causes cancer cells
- Teratogenic Action
- DNA function interruption so unborn embryo genes can't cause normal growth
- Direct effects
- cause harm by contact
- Indirect effects
- causes harmful enviro changes
- Acute effects
- occur suddenly, short term
- Chronic effects
- gradually appear, long term
- State of Matter
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