In:
CLEAN – Soil, Air, Water, Wiley, Vol. 46, No. 4 ( 2018-04)
Abstract:
The measurement of a temperature‐dependent volatilization rate of the nerve agent GB (sarin) from various common matrices, using a laboratory‐designed wind tunnel (model system), is described. Small GB droplets are dispersed on the matrices surfaces, and samples are collected from the model system and analyzed utilizing a solid phase extraction/gas chromatography analytical method. Profiles demonstrating the vapor concentrations as a function of time are calculated. The results indicate that asphalt blocks relatively conserve GB, exhibiting a slow‐release mode of action over at least 2 weeks. Nevertheless, using standard decontamination procedures such as super tropical bleach may prevent this secondary evaporation risk. The concentration profile of commercial sidewalk bricks show a moderate decay, probably due to the existence of basic sites in the cement‐containing bricks. Fast clearance of GB is measured from smooth surface tiles, as these porous tiles both adsorb and/or degrade GB droplets very quickly.
Type of Medium:
Online Resource
ISSN:
1863-0650
,
1863-0669
DOI:
10.1002/clen.201700142
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2270984-8
detail.hit.zdb_id:
2271097-8
SSG:
13
SSG:
14
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