• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

The Dangers of Exposure to Asbestos

Asbestos was used in thousands of commercial products before it was banned. According to research, exposure to asbestos can cause cancer as well as other health problems.

It is not possible to tell by simply looking at a thing if it is made up of asbestos Attorney. You cannot smell or taste it. Asbestos can only be detected when materials containing it are broken, drilled, or chipped.

Chrysotile

At its peak, chrysotile made the majority of the asbestos production. It was employed in a variety of industries like construction, insulation, and fireproofing. In the event that workers were exposed to the toxic material, they could contract mesothelioma, as well as other asbestos-related diseases. Thankfully, the use of this harmful mineral has diminished dramatically since mesothelioma awareness began to increase in the 1960's. However, traces of it can still be found in products that we use today.

Chrysotile is safe to use when you have a thorough safety and handling plan in place. It has been discovered that at the present exposure levels, there is no danger to the people who handle it. Inhaling airborne fibres has been found to be strongly linked with lung cancer and lung fibrosis. This has been confirmed for intensity (dose) as well as the duration of exposure.

In one study mortality rates were compared between a manufacturing facility which used largely chrysotile in the manufacture of friction materials and the national death rate. The study concluded that, after 40 years of processing at low levels of chrysotile, there was no significant increase in mortality rates in this factory.

Chrysotile fibres tend to be shorter than other forms of asbestos. They can enter the lungs, and enter the bloodstream. This makes them much more prone to causing health consequences than longer fibres.

It is extremely difficult for chrysotile fibers to be airborne or pose any health risk when mixed with cement. Fibre cement products are extensively used throughout the world, especially in buildings like hospitals and schools.

Research has proven that amphibole asbestos, like amosite or crocidolite is less likely than chrysotile in causing disease. These amphibole varieties are the primary source of mesothelioma as well as other asbestos-related diseases. When the cement and chrysotile are combined together, a strong, flexible product is created that is able to stand up to extreme environmental hazards and weather conditions. It is also easy to clean after use. Asbestos fibres can be easily removed by a professional and safely taken away.

Amosite

Asbestos is a class of fibrous silicates found in certain types of rock formations. It is classified into six groups that include amphibole (serpentine) and Tremolite (tremolite) anthophyllite (crocidolite) and anthophyllite.

Asbestos minerals are made up of thin, long fibers that range in length from fine to wide. They can be curled or straight. These fibres are found in nature in the form of individual fibrils or bundles with splaying ends referred to as a fibril matrix. Asbestos minerals can be found as a powder (talc) or mixed with other minerals and sold as talcum powder and vermiculite that are widely used in consumer products such as baby powder, face powder and cosmetics.

The most extensive asbestos use occurred during the first two-thirds of 20th century when it was utilized in shipbuilding, insulation, fireproofing, and other construction materials. The majority of asbestos-containing exposures to the workplace were in the air, but some workers also were exposed to asbestos-bearing rocks and contaminated vermiculite. Exposures varied from industry to industry, era to, and geographical location.

Asbestos exposure in the workplace is mostly because of inhalation. However there have been instances of workers being exposed through skin contact or through eating foods contaminated with asbestos. Asbestos can only be found in the environment because of natural weathering and degrading of contaminated materials, such as ceiling and floor tiles, car brakes and clutches, as well as insulation.

It is becoming apparent that non-commercial amphibole fibers can also be carcinogenic. These are fibres are not the tightly knit fibrils of the serpentine and amphibole minerals, but instead are loose, flexible and needle-like. These fibres are found in the cliffs and mountains in a variety of countries.

Asbestos can be absorbed into the environment in a variety of ways, including through airborne particles. It can also leach out into water or soil. This is caused by both natural (weathering of asbestos-bearing rock) and anthropogenic causes (disintegration of asbestos-containing wastes and disposal in landfill sites). Asbestos contamination of surface and ground waters is primarily caused by natural weathering. However it can also be caused by human activity, for instance by the milling and mining of asbestos-containing materials, demolition and dispersal, and the disposal of contaminated waste in landfills (ATSDR 2001). Inhalation exposure to airborne asbestos fibres remains the main cause of illness among people exposed to asbestos in the workplace.

Crocidolite

Inhalation exposure is the most frequent method of exposure to asbestos fibres. These fibres can enter the lung which can cause serious health issues. Mesothelioma and asbestosis as well as other illnesses are caused by asbestos fibres. Exposure to fibers can occur in other ways as well like contact with contaminated clothing or building materials. This type of exposure is especially dangerous when crocidolite (the blue form of asbestos) is involved. Crocidolite fibers are softer and less brittle and therefore easier to inhale. They can also be lodged deeper within lung tissues. It has been linked to more mesothelioma-related cases than other asbestos types.

The six main types of asbestos are chrysotile, amosite, epoxiemite, tremolite anthophyllite, and actinolite. The most common forms of asbestos are epoxiemite and chrysotile, which together comprise the majority of commercial asbestos used. The other four types haven't been as extensively used, but they may still be present in older buildings. They are not as hazardous as amosite and chrysotile, but they can pose a risk when mixed with other asbestos minerals or mined in close proximity to other naturally occurring mineral deposits, like talc or vermiculite.

A number of studies have demonstrated an connection between exposure to asbestos and stomach cancer. The evidence is contradictory. Some researchers have reported an SMR (standardized death ratio) of 1.5 (95 percent confidence interval: 0.7-3.6), for all asbestos workers, while others have reported an SMR of 1,24 (95% confidence interval: 0.76-2.5), for those working in chrysotile mills and mines.

The International Agency for Research on Cancer (IARC) has classed all asbestos types as carcinogenic. All asbestos types can cause mesothelioma, but the risks vary depending on how much exposure is taken, what type of asbestos is involved, and the length of time that exposure lasts. IARC has declared that the best option for individuals is to stay clear of all forms of asbestos. If you have been exposed to asbestos and suffer from a respiratory illness or mesothelioma, then you should talk to your doctor or NHS111.

Amphibole

Amphiboles comprise a variety of minerals that can form needle-like or prism-like crystals. They are a type of inosilicate mineral that is composed of two chains of SiO4 molecules. They have a monoclinic arrangement of crystals, but certain crystals have an orthorhombic form. The general formula of an amphibole is A0-1B2C5T8O22(OH,F)2. The double chains are composed of (Si,Al)O4 Tetrahedrons that are joined in rings of six. The tetrahedrons are separated each other by octahedral sites in strips.

Amphiboles are present in metamorphic and igneous rock. They are typically dark and hard. They can be difficult to distinguish from pyroxenes because they have similar hardness and color. They also share a similar pattern of cleavage. However, their chemistry allows for many different compositions. The chemical compositions and crystal structures of the various mineral groups in amphibole could be used to identify them.

The five types of asbestos belonging to the amphibole family are amosite, anthophyllite as well as crocidolite and actinolite. While the most popular form of asbestos is chrysotile; each has its own distinct characteristics. The most dangerous type of asbestos, crocidolite is composed of sharp fibers that are easy to inhale into the lung. Anthophyllite can range from yellow to brown in color and is made up of magnesium and iron. This kind of material was used to create cement and insulation materials.

Amphibole minerals are difficult to analyze because they have a a complicated chemical structure and numerous substitutions. Therefore, a thorough analysis of their composition requires special techniques. EDS, WDS and XRD are the most popular methods for identifying amphiboles. However, these methods only give approximate identifications. For instance, these techniques, cannot distinguish between magnesio hastingsite and magnesio hastingsite. Furthermore, these techniques do not distinguish between ferro-hornblende and pargasite.