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Lead Exposure Factors

1651 Words7 Pages

Name: Chan So Shan Student No: 11388277 Course: ENVR S411

Question 1
1a) Lead is a heavy metal that bring many health problem to us containing impaired kidney function as well as cognitive deficit, especially in children. Therefore, lead leakage is a big issue to us since it may profoundly and long-term affect our health. According to the ‘United States Nuclear Regulatory Commission’, exposure is identified as contact over time and space between a person and one or more biological, chemical or physical agents. Exposure assessment is measuring the exposures to be arisen or anticipated occurred in human population. Having exposure measurement, the following several factors should take in consideration.

1. Concentration of lead in the environment …show more content…

Routes of exposure is the method that people come into contact with a hazardous chemical, the routes comprising breathing (inhalation), eating or drinking (ingestion) and contact with the skin (dermal contact). Lead can spread through these three routes. Lead exposure happens primarily by ingestion, the residents in Lynnview Ridge take the lead contaminated water and food. Moreover, breathing is second major pathway for human lead absorption, the lead particles suspended over the air and enter human body by inhalation. Furthermore, dermal contact also contributor to lead poisoning, they absorb lead by touching the contaminated stuff such as soil, wood and …show more content…

For example, compare the lead leakage effect on Lynnview Ridge and to China. It must be more influential that lead leakage occurs in China because the area of China is much larger than Lynnview Ridge. The area is resided throughout by people, larger area causes more residential people to be exposed to the contaminated area, more people contact with lead in their daily lives. Thus, the larger contaminated area will cause higher human exposure.

The above mentioned are the factors should be consider while assessing the human exposure to the hazardous substance. Lead gives rise to many health issues to human, so carefully use of lead must be implemented to prevent suffering from the disease of lead poisoning. Enterprises have the responsibility avoid the pollution created by their business and ensure the public health from poisoning of toxic chemicals. Everybody have a right to enjoy a clean and unpolluted environment!

1b) Lead is a heavy metal that exiting in nature, which is toxic to human body. Absorbing excessing lead causes lead poisoning, this disease influences many organs of human including kidney, bones, reproductive, circulatory as well as nervous

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