High Magnetic Property and Toxicity of Particulate Matter Generated during Welding and Cutting Processes.

ABSTRACT: Magnetic particulate matter (PM) has raised increasing concern due to its abundant presence in ambient air and negative health impact. However, there is still a lack of comprehensive understanding of their emission sources and toxicities. We here report the observation of high magnetic property and toxicity of PM generated during typical welding and cutting processes. Magnetite, formed during high-temperature operation with less oxygen pressure, was revealed to be the major magnetic contributor. The averaged saturation magnetization and magnetic susceptibility values of fine PM (PM_2.5) from welding processes are 1.4-4.2 times greater than those of PM emitted from other unintended emission sources, including iron and steel plants and brake wear, while they are 2.0-5.7 times great

SUBMITTER: Cui W 

PROVIDER: S-EPMC11504034 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature