Extraction of Chemical Impurities for Forensic Investigations: A Case Study for Indoor Releases of a Sarin Surrogate
Journal Article
·
· Building and Environment
- BATTELLE (PACIFIC NW LAB)
A solvent extraction approach was developed and examined for extraction of targeted organophosphorus compounds as well as nerve agent simulants from painted wallboard (PWB). Painted wallboard was chosen as a substrate due to its presence as large surface area media in an indoor environment that is applicable to a chemical agent release scenario. Three different solvent systems were examined with a 1:1 methylene chloride : acetone mixture having the most robust and consistent extraction for four target organophosphorus compounds (dimethyl methyl phosphonate (DMMP), diethyl methyl phosphonate (DEMP), diethyl methyl phosphonothioate (DEMPT), and diisopropyl methyl phosphonate (DIMP)). An average extraction efficiency of approximately 60% was obtained for these four compounds. The extraction approach was further demonstrated by extracting and detecting the chemical impurities present in neat DMMP that was vapor deposited onto painted wallboard tickets as a simulant to an agent release. Five chemical impurities that were present in DMMP - dimethyl phosphate, trimethyl ester phosphoric acid, ethyl methyl methylphosphonate, O,O,S-trimethyl ester phosphorothioic acid, and biphenyl- were detected on the PWB and were utilized to determine the source/supplier of the DMMP.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1638336
- Report Number(s):
- PNNL-SA-67758
- Journal Information:
- Building and Environment, Journal Name: Building and Environment Journal Issue: 5 Vol. 45
- Country of Publication:
- United States
- Language:
- English
Similar Records
Solvent Extraction of Chemical Attribution Signature Compounds from Painted Wall Board: Final Report
Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry
Photocatalytic degradation of organophosphorous compounds in an aqueous suspension of TiO{sub 2}
Technical Report
·
Thu Oct 29 00:00:00 EDT 2009
·
OSTI ID:1008265
Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry
Journal Article
·
Sun Mar 31 23:00:00 EST 1985
· Anal. Chem.; (United States)
·
OSTI ID:5424109
Photocatalytic degradation of organophosphorous compounds in an aqueous suspension of TiO{sub 2}
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:370095