Being Aware of Chemical Exposure

Chemical exposure includes many varieties of substances, including biological agents, mineral dusts, nitrogen compounds, metals, pesticides, plastics, rubber, solvents, asphyxiates and sulfur compounds. Some of the more dangerous chemicals a person can be exposed to are as follows:

* Ethylene glycol ether: A solvent used in heavy industry and during semiconductor chip manufacturing "clean rooms".

* Pentachlorophenol (PCP): First used as a domestic pesticide, but use is now restricted as a preservative for wood. It is a potential carcinogen and may cause birth defects and respiratory complications.

* Chromated Copper Arsenate: Used for many of the same purposes of PCP. It contains high amounts of arsenic that is highly toxic to humans.

* Trichloroethylene: Used as a cleaning solvent. It is now in many groundwater supplies and soil. It can be inhaled or consumed with water, and may cause respiratory complications, nervous system problems, organ failure and death.

The most common ailments caused by some of the 400+ regulated hazardous substances include:

* Asthma - A respiratory disorder during which the chest constricts and sufferers find it difficult to breath. Asthma is often times caused by an allergic reaction.

* Pneumonitis - An inflammation of the lungs. Can be caused by a virus or an allergic reaction to aspirated vomitus, ingested gasoline or other petroleum distillates, ingested or skin adsorbed pesticides, gasses from electroplating, or other irritants. It manifests itself through fever, chills, dry cough, and inability to breath, constricted airways, and fatigue.

Fibrosis - This occurs as a reaction from a hazardous chemical in which scar tissue begins to grow. It is commonly located in the liver or lungs.

* Chronic Bronchitis - An obstructive pulmonary disease which, to be considered chronic, must occur for over three months to years in a row. Coughing and phlegm production are common symptoms.

* Cancer - Many hazardous chemicals are carcinogens in concentrated amounts, and can result in the uncontrolled abnormal growth of cells.

* Neuropathy - Degeneration of the nerves resulting in pain, numbness, tingling, swelling, and muscle weakness in various parts of the body.

* Parkinson's syndrome - A central nervous system (CNS) difficulty characterized by resting tremor, muscle rigidity (including a mask-like face), slow motor movement, and a stooped, shuffling gait.

* Methemoglobinemia (met-H) - Is caused by a higher than normal occurrence of methemoglobin in the blood, it results in a difficulty of oxygen transport in blood. Being overexposed to nitrates usually results in what is known as Met-H.

* Anemia - A deficiency of red blood cells; symptoms include feeling tired, weak, and short of breath

* Dermatitis - Chronic inflammation causing swelling, pain, redness, itching, and cracking of the skin.

Chloracne - When an overexposure to chlorine occurs, specifically with halogenic aromatic hydrocarbons, and causes blackheads and acne-related items.

* Burns - Resulting from topical contact with strong acids or alkalies.

* Heavy metal poisoning - Examples are an over-exposure to substances such as mercury, lead and cadmium. This can occur as a reaction to substances that adversely affect the liver and kidney or heptotoxins and nephrotoxins.

Birth Defets - Some of which include spina bifida, where the spine is curved as well as hydrocephalus or anencephaly.

Raynaud's Phenomenon - This phenomenon is also a disorder that can adversely affect the blood vessels in several appendages such as the nose, toes, ears and fingers. The disorder is characterized by episodic attacks, called vasospastic attacks that cause the blood vessels in the digits (fingers and toes) to constrict (narrow) and cause feelings of coolness and numbness. Raynaud's can occur on its own, or it can be secondary to another condition such as scleroderma or lupus.

It is imperative for individuals to know the results both physically and mentally that are caused by overexposure to chemicals that may be harmful. The irreversible damage caused by high concentrations of particular substances can be life threatening, and individuals should be well informed of the risks.

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