mercury Flashcards
how does mercury enter water ways
from mining rocks containing cinnabar
volcanic eruptions
3 different forms of mercury
elemental-liquid
inorganic
organic - methylmercury- 100% absorbed by the GI tract
what is biomagnification
the accumulation of toxic materials as a food chain progresses. predatory species tend to have higher concentrations.
increase in 1mill fold at the top of the food chain
what fish have high lvls of mercury
larger predatory fish
sharks pickerel
swordfish bass
what fish have low levels of mercury
smaller fish that are typically prey
tuna mackerel
salmon cod
shellfish
health effects about mercury poisoning
neurotoxin and reproductive toxin:
-deteriorate NS
-impair hearing, vision, and speech
-muscle spams
-corrosion of skin and muscles
-difficulties with chewing and swallowing
able to damage babies as it can travel across the placenta
mercury poisoning in Iraq
poisoning via methyl mercury
grain not from humans was treated with fungicides
consumed grain leads to ataxia and paresthesia
mercury poisoning in japan
formation of minanata dieases
affects the neurological system from mercury poisoning
-ataxia
-paresthesia
-weakness
-vision impairment
-damaged hearing and speech difficulties
mercury poisoning in ontario
Minamata disease affects 2 first nation communities (grassy narrows and White dog) via eating contaminated fish. the large company dumped mercury waste into the wabigoon-english river sys
90% of the population is poisoned
what is a dental anagram?
positives and negatives?
dental filling composed of powered alloy and 50% mercury by weight.
cost-effective and long-lasting though contains elemental mercury (not as harmful as methyl mercury) which when inhaled may cause brain damage
what three industry sectors produced 2/3 of mercury emissions in 1990
medical waste insinerators
waste combustors
coal-fired power plants
ataxia
loss of muscular control (spams)
paresthesia
numbness of the skin
