Assessment of Secondary Sulfate Aqueous-Phase Formation Pathways in the Tropical Island City of Haikou: A Chemical Kinetic Perspective.

ABSTRACT: Sulfate (SO₄^2-) is an essential chemical species in atmospheric aerosols and plays an influential role in their physical-chemical characteristics. The mechanisms of secondary SO₄^2- aerosol have been intensively studied in air-polluted cities. However, few studies have focused on cities with good air quality. One-year PM_2.5 samples were collected in the tropical island city of Haikou, and water-soluble inorganic ions, as well as water-soluble Fe and Mn, were analyzed. The results showed that non-sea-salt SO₄^2- (nss-SO₄^2-) was the dominant species of water-soluble inorganic ions, accounting for 40-57% of the total water-soluble inorganic ions in PM_2.5 in Haikou. The S(IV)+H₂

SUBMITTER: Wang C 

PROVIDER: S-EPMC10892436 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature