研究目的
To enhance the detection of highly energetic materials (HEMs) on various substrates using a tunable quantum cascade laser spectrometer coupled with a grazing angle probe.
研究成果
The study demonstrated the effectiveness of using a QCL-GAP setup for detecting RDX on various substrates, with low limits of detection achieved for stainless steel and anodized aluminum. The findings highlight the importance of substrate properties and deposition methods in the detection of HEMs. Future work could explore alternative deposition methodologies to improve quantification and homogeneity.
研究不足
The study faced challenges in quantifying the amount of RDX absorbed on cardboard substrates and in dealing with interferences from Teflon substrates. The methodology for sample preparation and deposition could be optimized for better homogeneity and quantification.
1：Experimental Design and Method Selection:
The study utilized a tunable quantum cascade laser (QCL) spectrometer coupled with a grazing angle probe (GAP) for reflection-absorption infrared spectroscopy (RAIRS) measurements of thin films of HEMs on different substrates.
2：Sample Selection and Data Sources:
A saturated solution of RDX in acetone was prepared, and subsequent dilutions were transferred to test surfaces including stainless steel (SS), anodized aluminum (AN-Al), cardboard, and Teflon.
3：List of Experimental Equipment and Materials:
QCL-GAP setup, RDX, acetone, stainless steel plates, anodized aluminum, cardboard, and Teflon substrates.
4：Experimental Procedures and Operational Workflow:
RDX solutions were deposited on substrates via spin coating or immersion methods, and reflectance signals were monitored as a function of decreasing surface concentration.
5：Data Analysis Methods:
Reflectance signals were converted to log(R) for quantitative analysis, and calibration curves were generated to determine limits of detection (LOD).
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