What is the exposure limit of sulphur dioxide?
NIOSH: The recommended airborne exposure limit (REL) is 2 ppm averaged over a 10-hour workshift and 5 ppm, not to be exceeded during any 15-minute work period. ACGIH: The threshold limit value (TLV) is 0.25 ppm averaged over an 8-hour workshift.
What does s02 mean?
Sulfur Dioxide (SO2) Pollution.
What is the ppm of sulfur dioxide?
Sulfur dioxide is a colorless gas at ambient temperature and pressure. It can be detected by taste at concentrations of 0.35-1.05 ppm and has a pungent, irritating odor with an odor threshold of 0.67-4.75 ppm.
What is sulphur used?
The major derivative of sulphur is sulphuric acid (H2SO4), one of the most important elements used as an industrial raw material. Sulphur is also used in batteries, detergents, fungicides, manufacture of fertilizers, gun power, matches and fireworks.
What is sulfur used in?
Elemental sulfur is used in black gunpowder, matches, and fireworks; in the vulcanization of rubber; as a fungicide, insecticide, and fumigant; in the manufacture of phosphate fertilizers; and in the treatment of certain skin diseases. The principal use of sulfur, however, is in the preparation of its compounds.
What does SO2 mean in military?
A staff officer of the second class, often a commissioned officer of lieutenant commander, major or squadron leader rank.
Why is SO2 harmful to the environment?
Environmental effects When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain. Acid rain can: cause deforestation. acidify waterways to the detriment of aquatic life.
How does permissible exposure limit work?
Permissible exposure limit (PEL) is a regulatory limit on the amount or concentration of a substance in the air. This is usually based on an eight-hour time weighted average (TWA), although some are based on short-term exposure limits (STEL). Workplace environmental exposure limit (WEEL) may be expressed as TWA.
How can I be exposed to sulfur dioxide?
How might I be exposed to sulfur dioxide? Breathing air containing it or touching it. Working in industries where it occurs as a by-product, such as copper smelting or power plants. Working in the manufacture of sulfuric acid, paper, food preservatives, or fertilizers.
What should you do if you are exposed to sulfur dioxide?
If symptoms such as cough or difficulty breathing are present, administer oxygen if available. Topical administration of sodium bicarbonate solution aerosol may alleviate respiratory mucous membrane irritation. Asthmatic episodes triggered by sulfur dioxide should be treated with bronchodilator administration.