دانلود مقاله انگلیسی رایگان:تجزیه و تحلیل نمونه های مواد منفجره کشف شده از کف دریای بالتیک - 2020
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  • Analysis of samples of explosives excavated from the Baltic Sea floor Analysis of samples of explosives excavated from the Baltic Sea floor
    Analysis of samples of explosives excavated from the Baltic Sea floor

    سال انتشار:

    2020


    عنوان انگلیسی مقاله:

    Analysis of samples of explosives excavated from the Baltic Sea floor


    ترجمه فارسی عنوان مقاله:

    تجزیه و تحلیل نمونه های مواد منفجره کشف شده از کف دریای بالتیک


    منبع:

    Sciencedirect - Elsevier - Science of the Total Environment, 708 (2020) 135198. doi:10.1016/j.scitotenv.2019.135198


    نویسنده:

    Jakub Nawała a,⇑, Mateusz Szala a, Daniel Dziedzic a, Diana Gordon a, Barbara Dawidziuk a, Jacek Fabisiak b, Stanisław Popiel


    چکیده انگلیسی:

    After World War II, conventional and chemical ammunition containing mainly secondary and primary explosives was dumped in the sea. Explosives have medium toxicity to aquatic organisms, earthworms and indigenous soil microorganisms. Therefore, environmental monitoring is required, especially for dumped munitions. The main aspect of this work was to analyse the samples of lumps and sediments taken from the Baltic seabed. These samples were potentially explosives. The main goal of the study was to identify the type and composition of studied materials. In order to determine the chemical composition of samples of explosives, we used as follows: GC–MS/MS, LC-HRMS and NMR. Additionally, to determine the energetic properties we performed microcalorimetric-thermogravimetric analysis. Based on the obtained results, the composition of this explosive was TNT (41%), RDX (53%), aluminium powder (5%), and degradation products (below 1%). The resulting composition indicates that the analysed material can be classified in the ‘‘torpex” family, widely used during World War II. Regarding the results of the microcalorimetric analysis, we can conclude that excavated fragments of explosives are in very good condition and they still can detonate after being initiated. Therefore, there is a threat that they could be used for criminal or terrorist purposes.
    Keywords: Environmental samples | Explosives and their degradation products | Chromatographic analysis | Mass spectrometry | Nuclear magnetic resonance spectroscopy


    سطح: متوسط
    تعداد صفحات فایل pdf انگلیسی: 10
    حجم فایل: 1354 کیلوبایت

    قیمت: رایگان


    توضیحات اضافی:




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