[Identification of synthetic adhesives by simultaneous pyrolysis methylation gas chromatography].
Se Pu
; 18(4): 364-6, 2000 Jul.
Article
en Zh
| MEDLINE
| ID: mdl-12541520
At present, pyrolysis gas chromatography (Py-GC) is an effective analytical method for trace synthetic adhesives. Synthetic adhesives are usually composed of polar components. Thus, the polar pyrolysis products are normally difficult to measure by Py-GC due to their partial or complete adsorption in the pyrolysis zone, injection system or capillary column and the accuracy of results is seriously affected. Simultaneous pyrolysis methylation gas chromatography (Py-Me-GC) is a fast analytical method which was developed in recent years for polar compounds. The five synthetic adhesives have been identified by using Py-Me-GC in our study. Analytical conditions were: filament pyrolysis apparatus, flame ionization detector (FID), gas chromatograph, FFAP capillary column (30 m x 0.25 mm i.d.) and a quaternary ammonium salt as methylating agent. Major peaks of the products of pyrolysis were analysed qualitatively by GC/MS and comparisons were also made between the results by Py-Me-GC and those by Py-GC. The information gained from the components of substances by Py-Me-GC is more than that by Py-GC. The method is suitable for identifying synthetic adhesives of trace evidence in forensic science.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Adhesivos
/
Cromatografía de Gases
/
Metilmetacrilatos
Tipo de estudio:
Diagnostic_studies
Idioma:
Zh
Revista:
Se Pu
Año:
2000
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
China