Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 34, Issue 7, Pages 1967-1971Publisher
KOREAN CHEMICAL SOC
DOI: 10.5012/bkcs.2013.34.7.1967
Keywords
Chemical warfare agents (CWAs); Pre-concentration; Polydimethylsiloxane (PDMS)-coating; Silica
Categories
Funding
- Agency for Defense Development through Chemical and Biological Defense Research Center
Ask authors/readers for more resources
Aim of our study is finding adsorbents suitable for pre-concentration of chemical warfare agents (CWAs). We considered Tenax, bare silica and polydimethylsiloxane (PDMS)-coated silica as adsorbents for dimethyl methylphosphonate (DMMP) and dipropylene glycol methyl ether (DPGME). Tenax showed lower thermal stability, and therefore, desorption of CWA simulants and decomposition of Tenax took place simultaneously. Silica-based adsorbents showed higher thermal stabilities than Tenax. A drawback of silica was that adsorption of CWA simulant (DMMP) was significantly reduced by pre-treatment of the adsorbents with humid air. In the case of PDMS-coated silica, influence of humidity for CWA simulant adsorption was less pronounced due to the hydrophobic nature of PDMS-coating. We propose that PDMS-coated silica can be of potential importance as adsorbent of CWAs for their pre-concentration, which can facilitate detection of these CWAs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available