Oral bioaccessibility of potentially toxic elements in various environmental media

Martin Gaberšek (Avtor), Mateja Gosar (Avtor)

Povzetek

An important aspect of geochemical studies is determining health hazard of potentially toxic elements (PTEs). Key information on PTEs behaviour in the human body in case of their ingestion is provided with the use of in vitro bioaccessibility tests. We analysed and compared oral bioaccessibility of a wide range of PTEs (As, Cd, Ce, Cr, Cu, Hg, La, Li, Ni, Pb, Sb, Sn, Zn), including some that are not often studied but might pose a human health hazard, in soil, attic dust, street dust, and household dust, using Unified BARGE Method (UBM). Additionally, feasibility of usage of scanning electron microscope techniques in analyses of solid residuals of UBM phases was tested. Results show that bioaccessible fractions (BAFs) of PTEs vary significantly between individual samples of the same medium, between different media and between the gastric and gastro-intestinal phases. In soil, attic dust and street dust, bioaccessibility of individual PTE is mostly higher in gastric than in gastro-intestinal phase. The opposite is true for PTEs in household dust. In all four media, with the exception of Pb in household dust, among the most bioaccessible PTEs in gastric phase are Cd, Cu, Pb, and Zn. During the transition from the stomach to small intestine, the mean BAFs of most elements in soil, attic dust, and street dust decreases. The most bioaccessible PTEs in gastro-intestinal phase are Cu, Cd, Ni, and As. Micromorphological and chemical characterisation at individual particle level before and after bioaccessibility test contribute significantly to the understanding of oral bioaccessibility.

Ključne besede

potencialno toksični elementi;biodostopnost;onesnaženje okolja;

Podatki

Jezik:	Angleški jezik
Leto izida:	2024
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	GeoZS - Geološki zavod Slovenije
Založnik:	Springer Nature
UDK:	504.5
COBISS:	200919811
ISSN:	0269-4042
Št. ogledov:	29
Št. prenosov:	9
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Strani:	21 str.
Zvezek:	ǂvol. ǂ46
Čas izdaje:	2024
DOI:	10.1007/s10653-024-02073-5
ID:	24499644