Industrial Hygiene Essay

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Industrial Hygiene: A comprehensive exposure assessment report. Asbestos exposure World Trade Center disaster

Since September 11, 2001, the outdoor environment around the World Trade Center (WTC) site and nearby areas has been expansively monitored by Acme Industrial Hygiene Consultants and health agencies. As a consultant there have taken samples of air, dust, water, river residues, and drinking water and examined them for the existence of pollutants that could posture a health risk to answer workers at the WTC site, headquarter workers, and local populaces.

Sampling?

Everyone from Acme Industrial Hygiene collected bulk samples of fallen dust. This was all done by using a paper scoop, bulk samples were then reserved from numerous outdoor sites (e.g. car hood, window ledge, park bench) in addition to one indoor location, all of which seemed uninterrupted ever since the fall of the towers, as evaluated by the presence of a suave even layer of dust and the absence of indicators of recent human action. As a consultant, we were able to gather thirteen samples and the categorized them all with numbers (1-13) on September 11, 2001 and seven samples were gathered and labeled with letters (A - F) on September 13, 2001. All of these samples were put in 855 l polystyrene bottles. This was done at room temperature. Every one of these samples were gathered before rain fell on September 15, 2001, which surely changed physical and chemical characteristics of the dust. Samples were taken back to the lab for processing to separate contradictory mass fractions.

We picked the building types chosen for this Study. Also we tried to make sure that this Study endeavored to focus on sampling sites that are related to the inner city housing stock. This location included: high-rise condominiums, high-rise co-operatives, and post-1920 non-doorman mid-rise studio flat, and turn-of-the-century apartments. Inner city residential roof space could not be exemplified in the Study, because the lofts located uptown are chosen for commercial use only. So as to solicit volunteer participants from the targeted building types, a list of buildings that were matching the housing stock talked about from above was provided to us.

Abstraction of PM from Teflon Filters

Filter were used primarily for this action.

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We made sure that every one of them we handled with forceps that were clean sterilized and stainless steel. These filters were removed into a sole volume of distilled water in the ratio of 0.6 ml water for each mg sample. This amount of water was transferred into a sterile plastic specimen cup encompassing a dense Teflon ring at the bottom of cup. Also there were filters that were soaked with 80% ethanol on the atom side. The fluid was mildly extended on the filter with the pipet tip. We tried not to put any type of scrape on it. Next we placed it on top of the Teflon ring in the example cup. We made sure the element side was placing down, and one of the consultants placed a 7 mm thick Teflon ring was put on top of the strainer.

An orbital shaker was used to secure the cup with the filter. We then utilized a sonicator probe that was cleaned and washed with 1% Triton X-100. Next, a consultant made sure the probe was pulled down into the water in the example cup to a certain level. Around the specimen a cup Ice was placed there so the temperature would not go so high, and the warmth of the water was assessed right before and right after sonication was completed. When that was taking care of the shaker was turned to the lowest speed (setting = 1). After that was done, the sonicator power was positioned to 30, and the filter was sonicated for an hour even though it was rotating on the orbital shaker.

Control Samples

Quality control samples were gathered in order to assess the sampling and methodical World Trade Center study. Consultants used 14 processes and that was done to make sure that these processes were being piloted right. Control samples were gathered throughout each day of sampling. These samples contained within them the collection of field spike wipe samples. Control samples were collected for air samples wipe and microvacuum, Control samples were not collected with the bulk dust samples owing to insufficient material required to.....

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