Polymeric resins were synthesized by suspension polymerization on a pilot scale and packed in an acrylic column for use in a semi-industrial elution system, to study their behavior as adsorbents of oily water. The performance in removing benzene, toluene and xylene (BTX) was greater than 95.9 %, and the efficiency in retaining polyaromatic hydrocarbons (PAH) remained near 96.3 %.
Gas chromatography simultaneously coupled to flame photometric detector, nitrogen phosphorus detector and mass spectrometer (GC/FPD/NPD-MS) was used to identify nitrogen and sulfur mustards, their precursors and degradation products in samples of water, soil, organic solvent and a PVC floor. Extraction techniques and derivatization with BSTFA were employed during sample preparation. Fast screening of the samples was possible due the high sensibility and selectivity of FPD and NPD for sulfur and nitrogen compounds. Mass spectra of the identified chemicals presented match factors equal or bigger than 90% when compared to OPCW databases.Keywords: Mustard gas; gas chromatography; mass spectrometry; chemical weapons. ResumoCromatografia gasosa acoplada simultaneamente a detectores fotométricos de chama, de nitrogênio e fósforo e espectrômetro de massas (CG/DFC/DNP-EM) foi utilizada na identificação de mostardas de enxofre e de nitrogênio, seus precursores e produtos de degradação em amostras de água, solo, solvente orgânico e um piso de PVC preparadas de forma controlada. Técnicas de extração e derivatização com BSTFA foram utilizadas para possibilitar as análises das substâncias por cromatografia gasosa. O uso simultâneo de vários detectores em um só equipamento possibilitou rapidez nas análises. DFC e DNF apresentam boa seletividade e sensibilidade para compostos contendo enxofre e nitrogênio, permitindo a seleção inicial dos picos cromatográficos de possíveis compostos de interesse. Todos os espectros de massa das substâncias identificadas apresentaram índices de similaridades iguais ou superiores a 90% quando comparados aos existentes nas bases de dados da OPAQ.Palavras-chave: Gás mostarda; cromatografia gasosa; espectrometria de massas; armas químicas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.