Jan 10, 2025 · EPA’s national and regional rules to reduce emissions of SO 2 and pollutants that form sulfur oxides (SO x) will help state and local governments meet the Agency’s national air quality standards. EPA identifies areas where the air quality does not meet EPA SO 2 standards.

Sulfur dioxide is somewhat toxic to humans, although only when inhaled in relatively large quantities for a period of several minutes or more. It was known to medieval alchemists as "volatile spirit of sulfur". [10] SO 2 is a bent molecule with C2v symmetry point group.

Mar 4, 2025 · Information on setting and implementing the outdoor air quality standards for sulfur dioxide.

Apr 1, 2021 · Air pollution from merchant ship with sulphur oxides smoke is due to presence of sulphur content in marine fuels used in marine engines which causes acid rain

Since sulfur emissions are proportional to the sulfur content of the fuel, an effective means of reducing SOx emissions is to burn low-sulfur fuel such as natural gas, low-sulfur oil, or low-sulfur coal.

Sulfur dioxide can damage trees and plants, inhibit plant growth, and damage sensitive ecosystems and waterways. It also can contribute to respiratory illness and aggravate existing heart and lung conditions. SO2 is in emissions from power plants, metals processing and smelting facilities, and vehicles.

Feb 7, 2023 · Sulfur dioxide is both a primary gas-phase pollutant (when formed during fuel combustion) and a secondary pollutant (when formed as the product of atmospheric gas- or aqueous-phase oxidation of reduced sulfur compounds, called sulfides). The important gas-phase sulfur oxides in the troposphere are SO2 and sulfuric acid (H2SO4).

All forms of SOx can be harmful to our health and the environment, but SO2 is the primary pollutant that Gasp and regulators are concerned with. Where Does SO2 Come From? SOx forms when fuel containing sulfur (mainly coal and oil) is burned, and during metal smelting and other industrial processes.

This site provides information about sulfur dioxide and its effects.

Limiting SOx emissions from ships will have a very positive impact on human health: how does that work? Simply put, limiting sulphur oxides emissions from ships reduces air pollution and results in a cleaner environment. Reducing SOx also reduces particulate matter, tiny harmful particles which form when fuel is burnt.