Signal detection limit of a portable Raman spectrometer for the SERS detection of gunshot residue
Signal detection limit of a portable Raman spectrometer for the SERS detection of gunshot residue
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DOI：
10.1557/mrc.2019.100
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发表时间：
2019-09
影响因子：
1.9
通讯作者：
Evan C. Thayer;W. Turner;Stephen Blama;M. S. Devadas;E. Hondrogiannis
中科院分区：
文献类型：
--
作者：
Evan C. Thayer;W. Turner;Stephen Blama;M. S. Devadas;E. Hondrogiannis
测定了无烟火药稳定剂二苯胺(DPA)和乙基中间体(EC)在丙酮、乙腈、乙醇和甲醇中的信号检出限(SDL)、检出限(LOD)和定量限。丙酮在四个DPA峰中的三个峰中产生的LOD最低，乙腈在三个EC峰中的两个峰和剩余的DPA峰中产生最低的LOD。当金纳米粒子加入到丙酮和乙腈的DPA溶液中时，观察到了统计上显著的变化(DPA峰的位置、半峰全宽和/或总面积)，并且在两种溶剂中的大部分峰的SDL都得到了改善。
Signal detection limit (SDL), limit of detection (LOD), and limit of quantitation of a portable Raman spectrometer were measured for smokeless gunpowder stabilizers, diphenylamine (DPA) and ethyl centralite (EC), in acetone, acetonitrile, ethanol, and methanol. Acetone yielded the lowest LOD for three of four DPA peaks, and acetonitrile yielded the lowest LOD for two of three EC peaks and the remaining DPA peak. When gold nanoparticles were added to the DPA solutions in acetone and acetonitrile, statistically significant changes were observed (DPA peak position, full width at half maximum, and/or total area) and SDL was improved for the majority of all peaks in both solvents.