Heavy Metal Pollution Flashcards
1
Q
Sources of lead
A
- paints
- old batteries
- water pipes
- old makeup
2
Q
Effects of lead
A
- lowers your IQ
- inhaled or absorbed by the skin through sweat
- acute: brain damage, death
3
Q
Solutions to lead pollution
A
- effects of lead poisoning cant be reversed
- recycling batteries properly
- removal of lead paints
4
Q
Sources of mercury
A
- some foods e.g tuna
- batteries
- combustion of coal
energy-saving lightbulbs
5
Q
Effects of mercury
A
- not easily absorbed by the gut
- organic mercury - lipo-soluble, bioaccumulate + biomagnify which pass through cell membranes
6
Q
Solutions to mercury pollution
A
- replacement of mercury in thermometers
- ion exchange
- dispose mercury at high pH - less mobile
7
Q
Sources of cadmium
A
- batteries
- old nickel - cadmium
8
Q
Effects of cadmium
A
- lip-soluble
- lung cancer
- brain damage
9
Q
Solutions of cadmium pollution
A
- banned use in pigments
- recycling
- hazardous waste landfill sites
10
Q
Sources of Tin
A
- contained tri-butyl tin (TBT)
11
Q
Effects of Tin
A
- alters growth + reproduction of marine organisms
- can be passed into humans
12
Q
Solutions of Tin pollution
A
- paint residues in chemical waste
- landfill
13
Q
Sources of iron
A
- residual iron ore in spoil heaps leached out by rainwater
14
Q
Effects of iron
A
- not toxic - can cause deoxygenation in water
- death of aerobic organisms
15
Q
Solutions for iron pollution
A
- spoil heap drainage water
- passed through mesh screens to oxidize iron and collect it
