What is your SO2?
What is SpO2? SpO2, also known as oxygen saturation, is a measure of the amount of oxygen-carrying hemoglobin in the blood relative to the amount of hemoglobin not carrying oxygen. The body needs there to be a certain level of oxygen in the blood or it will not function as efficiently.
What are the air quality standards for sulfur dioxide?
The U.S. Environmental Protection Agency (EPA) sets National Ambient Air Quality Standards (NAAQS) for criteria pollutants, including sulfur dioxide (SO2). On June 2, 2010, EPA revised the SO2 standard, establishing a one-hour primary standard of 75 ppb.
What is SO2 concentration?
SUMMARY. 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 does SO2 come from?
Sulfur dioxide, SO2, is a colorless gas or liquid with a strong, choking odor. It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores (aluminum, copper, zinc, lead, and iron) that contain sulfur.
Why is sulphur dioxide considered an air pollutant?
It increases the temperature of the atmosphere. It is used as insecticide which causes air pollution. It causes acid rain due to formation of sulphuric acid on combining with O2andH2O.
Is SO2 a molecule?
Carbon dioxide is a linear molecule while sulfur dioxide is a bent molecule. Both molecules contain polar bonds (see bond dipoles on the Lewis structures below), but carbon dioxide is a nonpolar molecule while sulfur dioxide is a polar molecule.
Why is SO2 bad for environment?
What are the environmental effects of SO2 and other sulfur oxides? At high concentrations, gaseous SOx can harm trees and plants by damaging foliage and decreasing growth. SO2 and other sulfur oxides can contribute to acid rain which can harm sensitive ecosystems.
Why is SO2 bad for atmosphere?
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.
What is a one-hour standard for exposure to SO2?
A one-hour standard was determined to better protect the public from exposure to high short-term SO 2 concentrations, especially in communities located close to coal-fired power plants, industrial boilers, petroleum refineries, metal processing plants, and diesel exhausts.
Which counties in Texas are designated attainment for the 2010 SO2 standard?
In April 2012, Texas submitted a revised recommendation to the EPA that Dallas, Ellis, El Paso, Galveston, Gregg, Harris, Jefferson, Kaufman, McLennan, and Nueces Counties be designated attainment for the 2010 SO 2 standard; and all remaining counties be designated unclassifiable.
What is the main source of SO2 emissions?
The largest source of SO 2 emissions is fossil fuel combustion at power plants and other industrial facilities. SO 2 emissions also come from extraction of metal from ore and burning high-sulfur fuels in locomotives, large ships, and non-road equipment.
What are the primary and secondary so 2 standards?
The United States Environmental Protection Agency (EPA) issued annual and 24-hour primary (health-based) SO 2 standards as well as three-hour and annual secondary SO 2 standards in 1971. As a result of the EPA’s review of the SO 2 NAAQS in 1973, the secondary annual SO 2 standard was revoked and the secondary three-hour standard was retained.