Assignment Risk Assessment

Assignment Risk Assessment - Hazard of Malathion o o o o o...

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: o Malathion is estimated to cause about 90 cases of related illnesses. o Estimated to cause about 5 deaths per application. o Malathion can cause cholinesterase inhibition which can cause cholinergic poisoning. o Can cause chronic effects such as peripheral neuropathy, neurobehavioral effects, and the development of allergic sensitivity. o Reports of carcinogenicity are non-conclusive. o Reports on many health effects still needs further studies and evidences to make a conclusive statement. o Can kill other animals especially the mosquito predators. o Can damage the fragile ecosystem important to tourism. o Residues can contaminate food resources. Dosage-response : o Reaction varies according to individual sensitivity, some are tolerant to high doses, and some are highly reactive to relatively low doses. o Children and individuals with low body mass can be more reactive to low doses. Exposure : o Uneducated people face the risk of close exposure if they do not follow safety precautions. o Uninformed people face the risk of close exposure if they are not aware of the aerial spraying. o As the chemical will be spread on air, most resident will have the exposure by inhalation of the mist formed from the applied insecticide. o Some people are at the risk of eating or handling food contaminated with Malathion. o Unavoidable exposure to residues of Malathion is predicted as some residents are needed to go back to their work or normal activities and can have dermal contact with contaminated plants or by ingestion of water or food borne residues. Risk Characterization : o People particularly the poor and uneducated who will not follow safety precautions are at risk of developing adverse effect. o Uninformed people who might not know of the aerial spraying are at very high risk of developing adverse effect, the worst is the possibility of death if at close exposure. o Ill-informed people are at high risk of developing adverse effect or worsening of their condition. o Uninformed or uneducated could handle or eat matter that contains pesticide residues which can cause related illness. o
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This document was uploaded on 03/05/2011.

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Assignment Risk Assessment - Hazard of Malathion o o o o o...

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