National Centre for Forensic Studies, University of Canberra, Canberra, ACT 2601, Australia.
Forensic Sci Int. 2012 Oct 10;222(1-3):102-10. doi: 10.1016/j.forsciint.2012.05.006. Epub 2012 May 31.
Commercially available skin cleansing alcohol wipes and conventional swabs were investigated for their use as a universal sampling medium for the simultaneous collection of both organic and inorganic explosive residues. Six compounds with the potential to be encountered in casework [pentaerythritol tetranitrate (PETN), 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), triacetone triperoxide (TATP), ammonium nitrate, and sodium chlorate] were selected as representative target compounds. Quantities of these target compounds were deposited on four different substrates (glass, plastic, aluminium foil and laminate). Two chosen alcohol wipes demonstrated better overall performance in the recovery of both the organic and inorganic representative compounds from each of the test surfaces compared to the results obtained using conventional cotton and polyester swabs, pre-moistened with various solvents, and a direct methanol wash (used as a control). Results obtained using dry cotton swabs indicated that it was not an effective swabbing system for the collection of both organic and inorganic explosive residues on common substrates.
市售皮肤清洁酒精擦拭巾和常规棉签被研究用于作为一种通用的采样介质，用于同时采集有机和无机爆炸残留物。选择了六种在实际工作中可能遇到的化合物[季戊四醇四硝酸酯（PETN）、2,4,6-三硝基甲苯（TNT）、六氢-1,3,5-三硝基-1,3,5-三嗪（RDX）、三丙酮三过氧化物（TATP）、硝酸铵和氯酸钠]作为代表性目标化合物。将这些目标化合物的数量沉积在四种不同的基质（玻璃、塑料、铝箔和层压板）上。与使用各种溶剂预润湿的传统棉和聚酯棉签以及直接甲醇洗涤（用作对照）相比，两种选定的酒精擦拭巾在从每个测试表面回收有机和无机代表性化合物方面表现出更好的整体性能。使用干棉拭子获得的结果表明，对于在常见基质上收集有机和无机爆炸残留物，它不是一种有效的拭子采集系统。
