Τίτλος:
Enhanced Gastric/Lung Arsenic Bioaccessibility from Lignite Fly Ashes: Comparing Bioaccessibility Rates with Multiple Environmental Matrices
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Inorganic arsenic (As), a carcinogenic element to humans, is among the most dangerous and flammable substances that coal-burning plants could release. When coal is burned, large portions of arsenic are captured on fly-ash (FA) particles, but it could also contribute significantly to stack emissions of fine fly-ash particles. The aim of this study was to evaluate the oral and respiratory bioaccessibility of arsenic in lignite fly-ash (LFA) samples, and their contribution to total As exposure. Arsenic bioaccessibility fractions via ingestion and inhalation showed significant differences, suggesting the presence of highly soluble As-bearing phases in the studied LFA samples. The bioaccessible As fractions (BAF%) in the simulated gastric fluids (UBM protocol, ISO 17924:2018) showed a range of 45–73%, while the pulmonary bioaccessibility rates in the simulated lung fluid (artificial lung fluid (ALF)) exhibited significantly enhanced levels ranging from 86% to 95%. The obtained arsenic bioaccessibility rates were compared with previous data for multiple environmental matrices such as soil and dust-related materials, revealing that LFA exhibited significantly higher bioaccessibility (%) for the inhalation pathway. © 2023 by the authors.
Συγγραφείς:
Bourliva, A.
Kelepertzis, E.
Papadopoulou, L.
Patinha, C.
Kantiranis, N.
Περιοδικό:
Toxics Law Daily
Λέξεις-κλειδιά:
arsenic, analytic method; Article; comparative study; correlational study; dust; environmental exposure; fly ash; Greece; inductively coupled plasma mass spectrometry; ingestion; inhalation; lignite fly ash; lung; lung fluid; mineralogy; particle size; scanning electron microscopy; soil; stomach; stomach juice; surface property; X ray fluorescence spectrometry
DOI:
10.3390/toxics11040358
