Science / Hazard Of Malathion

Hazard Of Malathion

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Autor:  anton  09 March 2011
Tags:  Hazard,  Malathion
Words: 785   |   Pages: 4
Views: 343

Hazard identification

Malathion is an insecticide that is used primarily on crops to control insects. Malathion brakes down quickly when exposed to the elements like soil, water, and sunlight. Normally people are not exposed to this insecticide unless they are in the vicinity of the area that is being sprayed. Then the risk will be the spray that is in the air, or on surfaces that have been touched. (http://www.atsdr.cdc.gov)

Malathion affects how the brain and the nervous system work and exposure to excessive amounts can cause difficulty breathing, tightness of chest, cramps, vomiting, diarrhea, blurred vision, headaches, dizziness, los of consciousness, and death. However if treatment is administered quickly Malathion has no long term affects; while low level exposure has few, or no health problems. Since Malathion is an insecticide it needs to be spayed at dusk to reduce the harm factor of the animals, and other insects. (http://www.atsdr.cdc.gov)

Dose-response

The EPA lists the safe doses of the insecticide Malathion to be 0.1 milligrams of Malathion per liter of drinking water, 0.1 to 135 PPM for certain types of food, and 15 milligrams per meter of work area at an 8 hour work day for a 40 hour work week. Exposures to amount les than these amounts may cause skin irritation, irritate asthma patients, or act as a lung irritant. In high doses Malathion may cause difficulty breathing, tightness of chest, cramps, vomiting, diarrhea, blurred vision, headaches, dizziness, los of consciousness, and death. (http://www.atsdr.cdc.gov)

Exposure

The risk of spraying the Malathion for mosquito control in the center of the town at the low concentrations associated with mosquito spraying will be kept to a minimum by giving ample notice to the public and by spraying for the mosquitoes at dusk. The maximum amount of the active ingredient Malathion is 8 ounces to an acre, and the marsh, and river banks can be sprayed once a year and then sprayed as needed through out the remainder of the year to eliminate problem areas that develop.

Risk characterization

The probability that there will be any adverse health issues is very low to the public. The public will not be exposed to high enough levels of Malathion to impose a severe health risk. The risk to the wild life mainly fish and larger animals being wild or not will not have a lot of affect due to the low dosage of Malathion that is administered it will however affect insects that are in the spray area and are present at the time of spraying.

My vote on the subject of spraying the mosquito population with Malathion is. I think it would be a good idea and is based on the information that I have compiled together on this subject. I will go into more detail on the factors that influenced my decision in the following paragraphs.

Malathion is primarily used in the control of insects in farmers cultivated fields. People are not normally exposed to this insecticide unless they have come into contact with the area that has been sprayed. This becomes less of a problem with the more time that has lapsed from the time of spraying to the time of contact due to the Malathion breaking down from the contact with soil, water, or sunlight.

The amount of exposure to Malathion that the EPA regulates is 0.1 milligrams of malathion per liter of drinking water, 0.1 to 135 PPM for certain types of food, and 15 milligrams per meter of work area at an 8 hour work day for a 40 hour work week. This is the safe amounts that have been set for Malathion and the safety of the humans in general. (http://www.atsdr.cdc.gov)

The spraying of the Malathion for the mosquito control will not pose a high threat to the public due to the fact that it is a very small dose. Maximum amount would be 8 ounces per acre plus the delivery agent that it is delivered to the mosquitoes in. The river and surrounding marshlands can be sprayed once and then sprayed as needed to eliminate the problem areas that surface. (http://www.atsdr.cdc.gov)

The economic aspects of spraying Malathion for mosquito control would be; that in an aerial application it is very expensive with the use of airplanes, or the helicopters for the delivery. This will also be an annual expense with the mosquitoes returning another year.

References

Retrieved may 26, 2008 from http://www.atsdr.cdc.gov/tfacts154.html



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