Ambient particle composition and toxicity in 31 major cities in China.

ABSTRACT: Current assessment of air quality or control effectiveness is solely based on particulate matter (PM) mass levels, without considering their toxicity differences in terms of health benefits. Here, we collected a total of 465 automobile air conditioning filters from 31 major Chinese cities to study the composition and toxicity of PM at a national scale. Dithiothreitol assay showed that normalized PM toxicity (NIOG) in different Chinese cities varied greatly from the highest 4.99 × 10^-3 for Changsha to the lowest 7.72 × 10^-4 for Yinchuan. NIOG values were observed to have significant correlations with annual PM₁₀ concentration (r = -0.416, p = 0.020) and some PM components (total fungi, SO₄ ^2- and calcium element). The conc

SUBMITTER: Zhang L 

PROVIDER: S-EPMC11197799 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature