Trace explosive detection analysis based on FQ and IMS

doi:10.16265/j.cnki.issn1003-3033.2024.11.0356

Abstract

Abstract:

In order to timely and effectively detect the explosives hidden in luggage, packages and individuals, multiple explosives such as trinitrotoluene(TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine(RDX), triacetone triperoxide(TATP), ammonium nitrate(AN), etc. were detected by FQ and IMS instruments by wiping and aspiration sampling methods. The comparison was mainly made from two aspects: alarm time and recovery time. The experimental results show that under wiping sampling, the average alarm time of FQ is about 2 seconds less than that of IMS, and the average recovery time is about 30 seconds less than that of IMS, which has higher detection efficiency. In the case of aspirated sampling, FQ instruments can detect TNT and TATP, while it is difficult for IMS instruments to detect explosives.

Key words: fluorescence quenching (FQ), ion mobility spectrometry (IMS), trace, explosive detection, alarm time, recovery time

CLC Number:

X924.2安全监测技术与设备

HAO Fenglong, ZHANG Qingsheng, JIANG Lingling, JIN Chuan, ZHANG Tao, JIA Erhui. Trace explosive detection analysis based on FQ and IMS[J]. China Safety Science Journal, 2024, 34(11): 179-184.

Figures/Tables 6

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样品名称	样品质量浓度/ (ng·μL ^-1)	平均报警响应时间/s	平均报警恢复时间/s
TNT	0.1	1.38	4.32
RDX	20	3.58	5.80
黑火药	10	2.36	4.79
膨化炸药	10	5.41	9.07
TATP	10	1.42	5.08
硝基苯	1	4.23	5.40
AN	5	1.16	5.05
硝基甲苯	5	1.52	4.82
奥克托金	100	2.38	4.93
8701炸药	10	1.43	5.87

样品名称	采样方式
样品名称	擦拭采样		吸气采样
TNT	报警响应时间	1.38	报警响应时间	1.71
TNT	报警恢复时间	4.32	报警恢复时间	4.90
TATP	报警响应时间	1.42	报警响应时间	1.07
TATP	报警恢复时间	5.08	报警恢复时间	7.15

样品名称	擦拭采样图谱	吸气采样图谱
TNT
AN

样品名称	FQ仪器		IMS仪器
样品名称	平均报警时间	平均恢复时间	平均报警时间	平均恢复时间
TNT	1.38	4.32	3.48	35.63
AN	1.16	5.05	3.57	35.33