The UV Absorption Spectra of Chemical Agents and Simulants

Abstract

The uv spectra of chemical agents GA, GB, GD, VX, HD, and L and common agent simulants have been measured in cyclohexane solution from 350 to 200 nm. The purity of the agents, measured by gas chromatographic analysis, was in general >96%. At 230 nm, the strength of the uv absorption followed the general trend L > VX > GA > HD > GD > GB > DMMP. Except for HD and L, agent spectra lacked characteristic features that will be useful for remote detection by uv sensors.

Toxicology Studies of Lewisite and Sulfur Mustard Agents:genetic Toxicity of Lewisite (L) in Chinese Hamster Ovary Cells

“…Measurement ol the ultraviolet absorption spectrum of the sample in isooctane revealed that the spectrum and the absorptivity of the material at 215 nm agreed with published values in the literature (Rewick, et al, 1986;Mohler and Sorge, 1939) and did not indicate the presence of ultravioletbsorbing compounds other than Lewisite. This conclusion was supported by our results from gas-chromatographic analyses of the sample following derivatization with 2-mercaptoethanol.…”

Teratology studies of lewisite and sulfur mustard agents: Effects of lewisite in rats and rabbits: Final report

“…Measurement of the ultraviolet absorption spectrum of the sample in isooctane revealed that the spectrum and the absorptivity of the material at 215 nm agreed with published values in the literature (Rewick, et al, 1986;Mohler and Sorge, 1939) and did not indicate the presence of ultraviolet-absorbing compounds other than lewisite. This conclusion was supported by results from gas-chromatographic analyses of the sample following derivatization with 2-mercaptoethanol (Appendix A).…”

Atmospheric degradation mechanisms of a simulant organophosphorus pesticide isopropyl methyl methylphosphonate: A theoretical consideration

“…[1,2,9,[11][12][13][14][15][16][17] Previous experimental and theoretical studies on OPs containing AOCH 3 or AOCH 2 A reported that reactions of these OPs with O 2 /NO result in the formation of an alkoxy radical ([P(O)OCH(OÁ)A). [12,15,[18][19][20][21][22] These results are in agreement with a subsequent rearrangement of the alkoxy radical occurring through a five-member transition state with the formation of [P(O)OH and a molecular carbonyl radical. In a recent experimental study, [23] the rate constant for atmospheric reaction of OH radicals and a simulant OP containing the AOCH\ and AOCH 3 groups isopropyl methyl methylphosphonate (IMMP, (CH 3 ) 2 CHO-P(O)(CH 3 )OCH 3 ) was determined to be 6.72 Â 10 À11 cm 3 mol À1 s…”