کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
96593 160467 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of losses of volatile compounds from dynamites. Investigation of cross-contamination between dynamites stored in polyethylene bags
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Study of losses of volatile compounds from dynamites. Investigation of cross-contamination between dynamites stored in polyethylene bags
چکیده انگلیسی

The purpose of this work was to study the appropriateness of polyethylene bags for the preservation of explosive specimens. To this end, specimens of two types of dynamites, Goma-2 EC, containing nitroglycol (EGDN) and dinitrotoluene (DNT), and Goma-2 ECO, containing only EGDN, were placed individually inside bags and introduced into hermetically sealed glass jars, which were stored for a period of time. Losses of volatile compounds were studied by headspace analysis using gas chromatography coupled to mass spectrometry (GC–MS). The cross-contamination between dynamites was studied by using high performance liquid chromatography with mass spectrometry (HPLC–MS) to analyse the extracts obtained after a sequential solvent extraction of these specimens. Polyethylene bags permit the loss of volatile compounds since EGDN and DNT were detected in the headspaces of the jars. Moreover, cross-contamination between dynamites was also demonstrated since DNT content decreased in the dynamite containing this compound and increased in the dynamite that had not contained it.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 211, Issues 1–3, 10 September 2011, Pages 27–33
نویسندگان
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