Ecotoxicology and Environmental Safety (Mar 2022)

The distribution and structural fingerprints of metals from particulate matters (PM) deposited in human lungs

  • Xiangyuan Zhang,
  • Shaodong Wang,
  • Lan Ling,
  • Guanyu Hou,
  • Siwen Leng,
  • Na Ma,
  • Mantang Qiu,
  • Xiao Li,
  • Xuejun Guo

Journal volume & issue
Vol. 233
p. 113324

Abstract

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This work investigated the distribution and chemical fingerprints of 24 metals in particulate matter (PM) deposited in nonoccupational human lungs. Metals in the pulmonary PM can be grouped by the mean concentration as > 5 × 103 μg/g (Al/Fe/Ca/Mg/Zn), 1–5 × 103 μg/g (Ti/Ba/Pb/Mn), 0.2–1 × 103 μg/g (Cu/Cr/As/V) and 10, Al/Cd/Cr/Ba/Ni/Ti/Sn/V/Sb), moderate retention (2 <LR<10, Pb/Mn/Fe), minor retention (1 < LR <2, Cu/Co), and negligible retention (LR<1, Ca/Mg/Zn). V and Ti were found to be mainly from indoor PM sources and deserve a close attention in healthy individuals. C-, Al- and Ti-rich fine particles were the most common pulmonary particles imaged by spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM). These data establish a foundation for classification and further risk assessment of the metal species in pulmonary PM.

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