Modified clay minerals efficiency against chemical and biological warfare agents for civil human protection
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
24603112
DOI
10.1016/j.jhazmat.2014.01.059
PII: S0304-3894(14)00092-2
Knihovny.cz E-zdroje
- Klíčová slova
- Antibacterial activity, Clay mineral, Mustard gas, Permeation, Yperite,
- MeSH
- akrylové pryskyřice chemie MeSH
- bentonit chemie farmakologie MeSH
- biologické bojové látky * MeSH
- chemické bojové látky chemie MeSH
- gramnegativní bakterie účinky léků růst a vývoj MeSH
- grampozitivní bakterie účinky léků růst a vývoj MeSH
- lidé MeSH
- mikrobiální testy citlivosti MeSH
- ochranné oděvy * MeSH
- polyethylen chemie MeSH
- silikáty hliníku chemie farmakologie MeSH
- yperit chemie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- akrylové pryskyřice MeSH
- bentonit MeSH
- biologické bojové látky * MeSH
- chemické bojové látky MeSH
- polyacrylonitrile MeSH Prohlížeč
- polyethylen MeSH
- silikáty hliníku MeSH
- vermiculite MeSH Prohlížeč
- yperit MeSH
Sorption efficiencies of modified montmorillonite and vermiculite of their mono ionic Na and organic HDTMA and HDP forms were studied against chemical and biological warfare agents such as yperite and selected bacterial strains. Yperite interactions with modified clay minerals were observed through its capture in low-density polyethylene foil-modified clay composites by measuring yperite gas permeation with using chemical indication and gas chromatography methods. The antibacterial activities of synthetized organoclays were tested against selected Gram-positive and Gram-negative bacterial species in minimum inhibitory concentration tests. The obtained results showed a positive influence of modified clay minerals on the significant yperite breakthrough-time increase. The most effective material was the polyethylene-Na form montmorillonite, while the polyethylene-Na form vermiculite showed the lowest efficiency. With increasing organic cations loading in the interlayer space the montmorillonite efficiency decreased, and in the case of vermiculite an opposite effect was observed. Generally the modified montmorillonites were more effective than modified vermiculites. The HDP cations seem to be more effective compare to the HDTMA. The antibacterial activity tests confirmed efficiency of all organically modified clay minerals against Gram-positive bacteria. The confirmation of antibacterial activity against Y. pestis, plague bacteria, is the most interesting result of this part of the study.
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