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Recovery of oxygenated ignitable liquids by zeolites, Part I: Novel extraction methodology in fire debris analysis  Kathryne A. St. Pierre, Vincent J.

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Presentation on theme: "Recovery of oxygenated ignitable liquids by zeolites, Part I: Novel extraction methodology in fire debris analysis  Kathryne A. St. Pierre, Vincent J."— Presentation transcript:

1 Recovery of oxygenated ignitable liquids by zeolites, Part I: Novel extraction methodology in fire debris analysis  Kathryne A. St. Pierre, Vincent J. Desiderio, Adam B. Hall  Forensic Science International  Volume 240, Pages (July 2014) DOI: /j.forsciint Copyright © Terms and Conditions

2 Fig. 1 13X zeolite structure: Zeolites are crystalline, aluminosilicate, mineral structures with unique molecular sized pores and cavities. The primary structure of a zeolite is a tetrahedral framework of silicon (Si), aluminum (Al), and oxygen (O) atoms balanced by a cation. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

3 Fig. 2 13X Zeolite SEM images (500 to 10,000× magnification): The number of oxygen atoms contained within the framework of the zeolite structure determines the pore size of the zeolite (observed at higher magnifications). The unique pore sizes allow zeolites to host guest molecules adsorbed during heated passive headspace extraction. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

4 Fig. 3 Recovery of acetone: Results of the proof of concept study showing a comparison of 13X zeolites to a carbon strip for the recovery of acetone. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

5 Fig. 4 Recovery of ethanol: Results of the proof of concept study showing a comparison of 13X zeolites to a carbon strip for the recovery of ethanol. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

6 Fig. 5 Recovery of methanol: Results of the proof of concept study showing a comparison of 13X zeolites to a carbon strip for the recovery of methanol. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

7 Fig. 6 Recovery of isopropanol: Results of the proof of concept study showing a comparison of 13X zeolites to a carbon strip for the recovery of isopropanol. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © Terms and Conditions

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