Arsenic

Arsenic is found in soil, water, and air as a common environmental toxicant. The average daily human intake of arsenic is about 10 mg, largely ingested with food and water. The major source of occupational exposure to arsenic-containing compounds is from the manufacture of arsenical herbicides and pesticides. Arsenic is used as arsine and as arsenic trioxide in the manufacture of most computer chips using silicon-based technology. Gallium arsenide is used in the production of compound (types III—V) semiconductors that are used for making light-emitting diodes (LEDs), as well as laser and solar devices. Chromated copper arsenate (CCA) was used as a common treatment for outdoor lumber until 2004; this should not pose a health risk unless treated wood is burned in fireplaces or woodstoves. Federal restrictions on the allowable content of arsenic in food and in the occupational environment not only have improved safety procedures and decreased the number of intoxications but also have decreased the amount of arsenic in use; only the annual production of arsenic-containing herbicides is increasing. The incidence of accidental, homicidal, and suicidal arsenic poisoning has diminished greatly in recent decades.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

Get My Free Ebook


Post a comment