Analysis of erionites from volcaniclastic sedimentary rocks and possible implications for toxicological research

Harper, Martin; Dozier, Alan; Chouinard, Julie; Ray, Robyn

doi:10.2138/am-2017-6069

Cited by 10 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different fractions were used depending on the experimental method applied. case, the processing of the friable host rocks can generate airborne asbestos-type fibers [56], which may represent a potential environmental and health hazard.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fibrous Ferrierite from Northern Italy: Mineralogical Characterization, Surface Properties, and Assessment of Potential Toxicity

et al. 2022

View full text Add to dashboard Cite

Nowadays, fibrous minerals pose as significant health hazards to humans, and exposure to these fibers can lead to the development of severe pulmonary diseases. This work investigated the morphology, crystal structure, chemistry, and surface activity of fibrous ferrierite recently found in northern Italy through an integrated approach using scanning electron microscopy–energy dispersive spectroscopy, electron microprobe, inductively coupled plasma atomic emission spectrometry, X-ray powder diffraction, and electron paramagnetic resonance. Our results show that a notable amount of ferrierite fibers are breathable (average length ~22 µm, average diameter 0.9 µm, diameter-length ratio >> 1:3) and able to reach the alveolar space (average Dae value 2.5 μm). The prevailing extra-framework cations are in the Mg > (Ca ≈ K) relationship, R is from 0.81 to 0.83, and the Si/Al ratio is high (4.2–4.8). The <T-O> bond distances suggest the occurrence of some degree of Si,Al ordering, with Al showing a site-specific occupation preference T1 > T2 > T3 > T4. Ferrierite fibers show high amounts of adsorbed EPR probes, suggesting a high ability to adsorb and interact with related chemicals. According to these results, fibrous ferrierite can be considered a potential health hazard, and a precautionary approach should be applied when this material is handled. Future in vitro and in vivo tests are necessary to provide further experimental confirmation of the outcome of this work.

show abstract

Section: Methodsmentioning

confidence: 99%

“…This is even more relevant if the rocks containing this ferrierite are mined and used for industrial applications. In this case, the processing of the friable host rocks can generate airborne asbestos-type fibers [56], which may represent a potential environmental and health hazard.…”

Section: Introductionmentioning

confidence: 99%

Fibrous Ferrierite from Northern Italy: Mineralogical Characterization, Surface Properties, and Assessment of Potential Toxicity

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This has come to attention due to work regarding silicas and, more recently, fibrous zeolites, with specific attention paid to erionite. Erionite is a Category 1 carcinogen ( IARC, 1983 ), with exposure linked to malignant mesothelioma and other lung cancers in regions where it has been found in disturbed bedrock ( Dogan et al, 2006 ; Carbone et al, 2011 ; Gualtieri et al, 2016 ) and where it has been found to be present on the near-surface dust and soil ( Van Gosen et al, 2013 ; Harper et al, 2017 ; Beaucham et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Reanalysis of historic elemental speciation filters to investigate the presence of fibrous mineral particles using microscopy techniques

et al. 2022

View full text Add to dashboard Cite

A case is presented for the value of archiving air quality filters to allow for retrospective analysis of emerging contaminants, that is filter constituents not considered to be harmful (and thus not identified or quantified specifically) at the time of collection but subsequently considered to be of interest. As an example, filters from a 20-year historical archive consisting of 16,000 filters from three sites across Auckland are re-examined for the presence of elongated mineral fibres known to be present in rock across the city. Originally collected for the purpose of the source apportionment of particulate matter, 10 filters from each of the three sites were chosen for reanalysis based on their high silica and aluminium content, and thus considered more likely to contain fibre-like particles (FLP). These filters were analysed using various microscopic methods, including phase contrast microscopy (PCM), scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). The results show that although the commonly used fibrous polytetrafluoroethylene (PTFE) material of the filters may hamper the visual identification of any fibre-like particles under a certain length, their key components are able to be identified using a combination of PCM and SEM when they are of a suitable dimension and have settled in a certain orientation on the filter. In this case, the use of EDS confirmed the silicon content of the fibres and also revealed elemental spectra. Although the exact identification of the mineral fibre is uncertain, the EDS scan is consistent with hazardous zeolites such as erionite, known to be present in the rock found in Auckland. This study highlights the value in maintaining filter archives for the purpose of investigating the historical evolution of emerging atmospheric pollutants.

show abstract

Erionites

Nakhaee

Mehrpour

2024

Encyclopedia of Toxicology

View full text Add to dashboard Cite

Analysis of erionites from volcaniclastic sedimentary rocks and possible implications for toxicological research

Cited by 10 publications

References 27 publications

Fibrous Ferrierite from Northern Italy: Mineralogical Characterization, Surface Properties, and Assessment of Potential Toxicity

Fibrous Ferrierite from Northern Italy: Mineralogical Characterization, Surface Properties, and Assessment of Potential Toxicity

Reanalysis of historic elemental speciation filters to investigate the presence of fibrous mineral particles using microscopy techniques

Erionites

Contact Info

Product

Resources

About