Understanding Pesticide Exposure. Increasing Applicator Protection. HAZARD = EXPOSURE x TOXICITY. Exposure - How pesticides enter the body. Toxicity - The potential of a chemical to be poisonous. Parts of the body absorb pesticides at different rates
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enter the body
The potential of a chemical to be poisonous
The head is 4 times more absorbent than the hand
The genital area is 11 times more absorbent
Especially when mixing concentratesEye exposure
Get medical attention if there is pain or reddening of the eyeEye exposure
The potential of a chemical to be poisonous.
LD50 and LC50
HIGHER LD50/LC50 => less toxic
LOWER LD50/LC50 => more toxic
chemicals that have
potential to cause
long-term effects can
greatly increase the risk
of chronic adverse effects.
The nervous system of insects and humans have common characteristics.
cause acute poisoning
in the body leading to poisoning
Causing nerves to continuously
send messages to the muscles
Causes twitching, convulsions, seizures, and possibly deathOrganophosphates (OP)
Pupils of a heat stress victim
Pupils of an OP pesticide poisoning
victim are pinpoint (constricted)
avoid a pesticide
poisoning is to protect
yourself by reading the label and wearing personal protective equipment.
HAZARD = EXPOSURE x TOXICITY
Kerry H. Richards, PhD, Sharon I. Gripp, and Richard J. Johnson, of The Pennsylvania State University, Pesticide Education Program.
Portions of this presentation were adapted from a program developed by Michigan State University. Applicator exposure slides courtesy of University of Illinois.
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Revised on November 4, 2002