...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Optimisation of recovery protocols for double-base smokeless powder residues analysed by total vaporisation (TV) SPME/GC-MS
【24h】

Optimisation of recovery protocols for double-base smokeless powder residues analysed by total vaporisation (TV) SPME/GC-MS

机译：通过全蒸发（TV）SPME / GC-MS分析双碱无烟粉末残留物的回收方案的优化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The investigation of explosive events requires appropriate evidential protocols to recover and preserve residues from the scene. In this study, a central composite design was used to determine statistically validated optimum recovery parameters for double-base smokeless powder residues on steel, analysed using total vaporisation (TV) SPME/GC-MS. It was found that maximum recovery was obtained using isopropanol-wetted swabs stored under refrigerated conditions, then extracted for 15 min into acetone on the same day as sample collection. These parameters were applied to the recovery of post-blast residues deposited on steel witness surfaces following a PVC pipe bomb detonation, resulting in detection of all target components across the majority of samples. Higher overall recoveries were obtained from plates facing the sides of the device, consistent with the point of first failure occurring, in the pipe body as observed in previous studies. The methodology employed here may be readily applied to a variety of other explosive compounds, and thus assist in establishing 'best practice' procedures for explosive investigations. (C) 2016 Elsevier B.V. All rights reserved.
机译：爆炸事件的调查需要适当的证据方案，以从现场回收和保存残留物。在这项研究中，采用中央复合设计来确定经统计验证的钢上双基无烟粉末残留物的最佳回收率参数，并使用总气化（TV）SPME / GC-MS进行分析。发现在冷藏条件下使用浸有异丙醇的棉签可获得最大的回收率，然后在收集样品的同一天将其提取到丙酮中提取15分钟。这些参数用于回收PVC管炸弹爆炸后沉积在钢制见证表面上的爆炸后残留物，从而检测出大多数样品中的所有目标成分。如先前研究中所观察到的，从面向设备侧面的板获得的更高的总回收率与管道主体中首次发生故障的点一致。此处采用的方法可以很容易地应用于多种其他爆炸性化合物，因此有助于建立爆炸性研究的“最佳实践”程序。 （C）2016 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号