A Comprehensive Analyzer for Organic and Inorganic Explosives

A comprehensive analysis and explosives technology, applied in the analysis of materials, material analysis by electromagnetic means, instruments, etc., can solve problems such as low ionization efficiency, improve selectivity and specificity, facilitate qualitative analysis, and improve ionization efficiency. and the effect of detection sensitivity

Active Publication Date: 2017-12-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the low-temperature plasma ionization source is mainly used to ionize organic explosives, and the ionization efficiency is low when it cannot ionize inorganic explosives or ionize inorganic explosives

Method used

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  • A Comprehensive Analyzer for Organic and Inorganic Explosives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The thermal analysis sampler 1 uses the halogen beam heating lamp LCB-50 to heat the sample non-contact, and the distance between the heating lamp and the sampling cloth 4 is 35 mm.

[0020] The carrier gas flows in from the carrier gas inlet 2 of the thermal analysis injector 1, and the sample molecules flow out from the sample gas outlet 3; the carrier gas is pure dry air, and the carrier gas flow rate is 100-500mL / min.

[0021] A nickel source 5 is provided on the gas path at the rear end of the sample gas outlet 3 of the thermal analysis injector 1; the distance between the nickel source 5 and the sample gas outlet 3 is 15 mm.

[0022] A low-temperature plasma ionization source 6 is arranged on the gas path at the rear end of the nickel source 5; the distance between the low-temperature plasma ionization source 6 and the nickel source 5 is 10 mm. The low-temperature plasma ionization source 6 uses a glass tube with an outer diameter of 6 mm and a thickness of 1 mm a...

Embodiment 2

[0025] The thermal analysis sampler 1 conducts contact heating on the sample through a hot stainless steel metal block.

[0026] The carrier gas flows in from the carrier gas inlet 2 of the thermal analysis injector 1, and the sample molecules flow out from the sample gas outlet 3; the carrier gas is pure dry air, and the carrier gas flow rate is 100-500mL / min, which can be selected in the air Add dichloromethane, O 3 Such doping gases can improve the selectivity and specificity of explosive detection.

[0027] A nickel source 5 is provided on the gas path at the rear end of the sample gas outlet 3 of the thermal analysis injector 1; the distance between the nickel source 5 and the sample gas outlet 3 is 15 mm.

[0028] A nickel source 5 is provided on the gas path at the rear end of the sample gas outlet 3 of the thermal analysis injector 1; the distance between the nickel source 5 and the sample gas outlet 3 is 15 mm.

[0029] A low-temperature plasma ionization source 6 i...

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PUM

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Abstract

The present invention relates to a mass spectrometry instrument, specifically a comprehensive analyzer for organic and inorganic explosives, comprising a thermal analysis sample injector, a sampling cloth, a nickel source, a low-temperature plasma ionization source and an analyzer. There is a carrier gas inlet and a sample gas outlet on the top; the sampling is arranged in the thermal analysis sampler, and the sample on the sampling cloth is injected after thermal analysis; Nickel source, low temperature plasma ionization source and analyzer. The comprehensive analyzer for explosives of the present invention can fully detect organic and inorganic explosives through two ionization modes of low-temperature plasma ionization source and nickel source; for explosives that can be ionized by both ionization sources, the ionization efficiency and Detection sensitivity; adding dopant gas to the carrier gas or the discharge gas of the low-temperature plasma ionization source can change the reactive reagent ions in the ionization source and improve the selectivity and specificity of explosive detection.

Description

technical field [0001] The invention relates to a mass spectrum analysis instrument, in particular to a comprehensive analyzer for organic and inorganic explosives. The invention can comprehensively detect organic and inorganic explosives through two ionization methods of low-temperature plasma ionization source and nickel source; for explosives that can be ionized by both ionization sources, the ionization efficiency and detection sensitivity can be improved; Adding dopant gas to the discharge gas of the plasma ionization source can change the reagent ions in the ionization source, improve the selectivity and specificity of explosive detection, and facilitate the qualitative analysis of explosives. Background technique [0002] The low-temperature plasma ionization source is based on the principle of dielectric barrier discharge, using He, Ar, N 2 , air, etc. as the discharge gas, a dielectric barrier discharge can occur when a radio frequency voltage is applied to the inn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/64G01N27/68
Inventor 李海洋陈文东侯可勇谢园园赵无垛花磊
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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