Source and Nature of Inhaled Atmospheric Dust from Trace Element Analyses of Human Bronchial Fluids

6533b874fe1ef96bd12d6253

RESEARCH PRODUCT

Source and Nature of Inhaled Atmospheric Dust from Trace Element Analyses of Human Bronchial Fluids

Loredana Randazzo Loredana Randazzo Pierpaolo Zuddas Paolo Censi S. Speziale Roberta Santagata Rosalda Punturo Angela Cuttitta E. Tamburo Pietro Arico

subject

TEPHRA 010504 meteorology & atmospheric sciences [SDU.STU]Sciences of the Universe [physics]/Earth Sciences 550 - Earth sciences Volcanic Eruptions PM2.5 010501 environmental sciences 01 natural sciences volcanic eruption BRONCHOALVEOLAR LAVAGE atmospheric particulate trace element distribution DISSOLUTION TRACER Environmental Chemistry Humans VOLCANIC ASH Tephra Dissolution Sicily ERUPTION 0105 earth and related environmental sciences geography Inhalation Exposure geography.geographical_feature_category Chemistry Atmosphere Trace element Dust General Chemistry Atmospheric dust Particulates Reference Standards atmospheric particulate; trace element distribution; volcanic eruption Trace Elements Settore GEO/08 - Geochimica E Vulcanologia respiratory tract diseases Trace elements lanthanides medical geochemistry bronchoalveolar lavages Volcano Solubility 13. Climate action Environmental chemistry Bronchoalveolar Lavage Fluid Volcanic ash Environmental Monitoring ASH PARTICLES

description

International audience; Rapid volcanic eruptions quickly ejecting large amounts of dust provoke the accumulation of heavy metals in people living in surrounding areas. Analyses of bronchoalveolar lavage samples (BAL) collected from people exposed to the paroxysmal 2001 Etna eruption revealed a strong enrichment of many toxic heavy metals. Comparing the BAL to the dust composition of southeastern Sicily, we found that only V, Cr, Mn, Fe, Co, and U enrichment could be related to the volcanic event, whereas Ni, Cu, Cd, and Pb contents come from the dissolution of particles of anthropogenic origin. Furthermore, the nature of these inhaled anthropogenic particles was revealed by anomalous La and partially Ce concentrations in BAL that were consistent with a mixture of road dust and petroleum refinery emissions. Our results indicate that trace element distribution in BAL is a suitable tracer of human exposure to different sources of inhaled atmospheric particulates, allowing investigations into the origin of source materials inhaled by people subjected to atmospheric fallout.

year	journal	country	edition	language
2011-08-01

10.1021/es200539p https://hal.science/hal-00656838