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van Damme, I.M. (author), Mestres-Fitó, P. (author), Ramaker, H.J. (author), Hulsbergen, A.W.C. (author), van der Heijden, A.E.D.M. (author), Kranenburg, R.F. (author), van Asten, A.C. (author)There is an ongoing forensic and security need for rapid, on-scene, easy-to-use, non-invasive chemical identification of intact energetic materials at pre-explosion crime scenes. Recent technological advances in instrument miniaturization, wireless transfer and cloud storage of digital data, and multivariate data analysis have created new and...article 2023
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Bezemer, K. (author), McLennan, L. (author), van Duin, L. (author), Kuijpers, C.J. (author), Koeberg, M. (author), van den Elshout, J.J.M.H. (author), van der Heijden, A.E.D.M. (author), Busby, T. (author), Yevdokimov, A. (author), Schoenmakers, P. (author), Smith, J. (author), Oxley, J. (author), van Asten, A. (author)Erythritol tetranitrate (ETN) was prepared independently by two research groups from the USA and the Netherlands. The partially nitrated impurities present in ETN were studied using liquid chromatography-mass spectrometry to address the ultimate challenge in forensic explosives investigations, i.e., providing chemical and tactical information on...article 2020
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Bezemer, K. (author), McLennan, L. (author), Hessels, R. (author), Schoorl, J. (author), van den Elshout, J.J.M.H. (author), van der Heijden, A.E.D.M. (author), Hulsbergen, A. (author), Koeberg, M. (author), Busby, T. (author), Yevdokimov, A. (author), Rijke, E. (author), Schoenmakers, P. (author), Smith, J. (author), Oxley, J. (author), van Asten, A. (author)In this follow-up study the collaboration between two research groups from the USA and the Netherlands was continued to expand the framework of chemical attribution for the homemade explosive erythritol tetranitrate (ETN). Isotope ratio mass spectrometry (IRMS) analysis was performed to predict possible links between ETN samples and its...article 2020
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Witte, J.P.M. (author), Zaadnoordijk, W.J. (author), Buyse, J.J. (author)Since the nineteen fifties, groundwater levels in the Netherlands dropped more than as simulated by hydrological models. In the rural sandy part of the Netherlands, the difference amounts to approximately 0.3 m on average. The answer to the question of what or who caused this 'background decline' of groundwater tables may have juridical and...article 2019
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Bezemer, K.D.B. (author), Koeberg, M. (author), van der Heijden, A.E.D.M. (author), van Driel, C.A. (author), Blaga, C. (author), Bruinsma, J. (author), van Asten, A.C. (author)Studying links between triacetone triperoxide (TATP) samples from crime scenes and suspects can assist in criminal investigations. Isotope ratio mass spectrometry (IRMS) and gas chromatography (GC)-IRMS were used to measure the isotopic compositions of TATP and its precursors acetone and hydrogen peroxide. In total, 31 TATP samples were...article 2016
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Brust, H. (author), van Asten, A. (author), Koeberg, M. (author), Dalmolen, J. (author), van der Heijden, A.E.D.M. (author), Schoenmakers, P. (author)After an explosion of pentaerythritol tetranitrate (PETN), its degradation products pentaerythritol trinitrate (PETriN), dinitrate (PEDiN) and mononitrate (PEMN) were detected using liquid chromatography-atmospheric-pressure chemical-ionization-mass spectrometry (LC-APCI-MS). Discrimination between post-explosion and naturally degraded PETN...article 2014
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Brust, H. (author), Willemse, S. (author), Zeng, T. (author), van Asten, A. (author), Koeberg, M. (author), van der Heijden, A.E.D.M. (author), Bolck, A. (author), Schoenmakers, P. (author)In this work, a reliable and robust vacuum-outlet gas chromatography-mass spectrometry (GC-MS) method is introduced for the identification and quantification of impurities in trinitrotoluene (TNT). Vacuum-outlet GC-MS allows for short analysis times the analysis of impurities in TNT was performed in 4. min. This study shows that impurity...article 2014