Characterisation of gunshot residue from three ammunition types using suppressed anion exchange chromatography

Gunshot residue (GSR) is commonly analysed in forensic casework using either scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) or gas chromatography-mass spectrometry (GC-MS). Relatively little work has been reported on the post-discharge GSR content of non-metallic inorganic or low molecular weight organic anions to distinguish between different ammunition types. The development of an analytical method using suppressed micro-bore anion exchange chromatography (IC) is presented for the analysis of GSR. A hydroxide gradient was optimised for the separation of 19 forensically relevant organic and inorganic anions in <23min and sensitivities of the order of 0.12-3.52ng of anion detected for all species were achieved. Along with an optimised extraction procedure, this method was applied to the analysis of post-ignition residues from three selected ammunition types. By profiling and comparing the anionic content in each ammunition residue, the possibility to distinguish between each type using their anionic profiles and absolute weight is presented. The potential for interference is also discussed with respect to sample types which are typically problematic in the analysis of GSR using SEM-EDX and GC-MS. To the best of our knowledge this represents the first study on the analysis of inorganic anions in GSR using suppressed ion chromatography.     

Research universities as actors in the governance of local and regional development

In the increasingly competitive, knowledge-based economy, universities have a variety of potential roles for stimulating economic development beyond teaching, research and technology development. In this article we focus on universities’ role as actors in the governance of local and regional development. Using recently developed theories about the emergence of heterarchical governance, we discuss the motivations, interests, structural arrangements, and contingent conditions for universities becoming actors and partners in steering regional economic development policy and contributing to regional problem-solving, and explore the how university involvement may increase the effectiveness of governance processes. We test several hypotheses and draw lessons for the design and participation of governance arrangements. Our results suggest that individual leadership initiatives and the quality or interpersonal working relationships among leaders may be more important than the particular structural arrangements for producing effective governance outcomes.