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Terms in this set (33)
properties of mercury? (3)
Atomic number: 80
Melting point: - 38.9 °C
Boiling point: 356.6 °C
natural sources of mercury (4)
crust, coal deposits, volcano, forest fire
human sources of mercury (1)
how does mercury get into the food chain?
mercury gets into water and the organisms absorb it which are then eaten by other animals and it is now in the food chain
effects of mercury on the body in adults and babies
adults: harm to organs and immune system
babies: harms nervous system development and brain
reduce amount of mercury released into environment?
Gold Shop Mercury Capture System and Dental effluent guidelines
Gold Shop Mercury Capture System
technology that reduces airborne mercury emissions from gold refining facilities
Dental effluent guidelines
reduces mercury from dentist offices into water treatment plants by requiring dentists to instal amalgam separators that remove mercury from the water
amt of mercury childbearing women can eat?
no fish high in mercury and 2-3 meals each week of fish low in mercury
amt of mercury anyone else can eat?
4 meals of fish low in mercury each week and one meal of fish high in mercury per week
how to clean up a CFL?
scoop into jar in an aired out empty room and recycle it to the gov't
nature source of lead (1)
human source of lead (3)
use of fossil fuels, lead paint, pipes
human source of arsenic (4)
mining, smelting, power plants, pesticides
natural source of arsenic (3)
crust, volcano, rocks
how are humans exposed to lead? (3)
lead pipes, lead paint, emitted from lead smelters
how does lead affect the body? (3)
learning problems, premature growth, reproductive issues
how are humans exposed to arsenic? (2)
drinking or using contaminated water and smoking
how does arsenic affect the body? (3)
diabetes, cancer, lung disease
environmental affect of lead? (3)
environmental affect of arsenic? (2)
organisms die and no photosynthesis or reproduction
what are (cathode ray tube) CRTs?
vacuum tube that has one or more electron guns and a phosphorescent screen used to display images
what do CRTs contain
what are PCBs
man-made organic chemicals including carbon, hydrogen and chlorine atoms
what are PCBs used for (3)
transformers, electrical equipment, plastic
health affects of PCBs (2)
cancer, reproductive issues
how did PCBs get to the arctic?
ocean and wind currents
what are dioxins
a group of toxic chemical compounds that share chemical structures and biological characteristics
sources of dioxins? (5)
Burning trash, forest fires, herbicides, burning fuels, smoking cigarettes
affects of dioxins (3)
cause cancer, reproductive issues, interferes with hormones
what are endocrine receptors
chemicals that interfere with the endocrine system, produce bad developmental, reproductive, neurological, and immune effects
what are endocrine receptors found in? (6)
pharmaceuticals, pesticides, plastic bottles, metal cans, detergents, food
how do endocrine receptors affect humans?
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