Pretreatment Method for Chloramine-T Decon Sample Before GC Analysis of HD and VX.
In: Bulletin of Environmental Contamination & Toxicology, Jg. 109 (2022-11-01), Heft 5, S. 859-864
Online
academicJournal
Zugriff:
Chloramine-T, especially its solution in weak acidity, is one of the decontaminants for chemical warfare agents (CWAs), HD, and VX. A high CWAs recovery from decontamination (decon) sample via pretreatment was essential for evaluating decontamination effects. This paper performed experiments to optimize pretreatment methods to extract residual CWAs from chloramine-T decon samples before GC analysis. Effects of two neutralization methods, destroying decon activity by 15% Na2SO3 or decreasing decon activity by 3% NH3·H2O or 4% NaOH, were studied. Results showed they were all suitable for the HD decon sample, but only 4% NaOH was ideal for the VX decon sample. As for extractant, compared with dichloromethane, petroleum ether was more suitable for recovering CWAs from decon samples. A high recovery above 80% could be obtained for HD and VX samples ranging from 10 mg/L to 10,000 mg/L when optimized neutralization and extraction methods were simultaneously carried out. [ABSTRACT FROM AUTHOR]
| Titel: |
Pretreatment Method for Chloramine-T Decon Sample Before GC Analysis of HD and VX.
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| Autor/in / Beteiligte Person: | Xu, Mengxue ; Wu, Shaoxiong ; Zhu, Haiyan ; Wang, Lianyuan ; Zhang, Hongpeng ; Ma, Lan ; Miao, Ting ; Cheng, Zhenxing |
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| Zeitschrift: | Bulletin of Environmental Contamination & Toxicology, Jg. 109 (2022-11-01), Heft 5, S. 859-864 |
| Veröffentlichung: | 2022 |
| Medientyp: | academicJournal |
| ISSN: | 0007-4861 (print) |
| DOI: | 10.1007/s00128-022-03612-5 |
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