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Measuring method for gun shooting time

A measurement method and gun technology, which are applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problem of low accuracy, large errors, and inability to meet the sub-standard requirements of shooting residues. Determination of nitrate content and other issues to achieve the effect of improving detection efficiency and ensuring accuracy

Inactive Publication Date: 2012-06-27
GANSU INST OF POLITICAL SCI & LAW
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Problems solved by technology

Therefore, the experimental conditions and working curves of the above-mentioned method for the determination of "trace" nitrite in food cannot meet the requirements for the determination of nitrite content in shooting residues.
[0008] At present, for the detection of nitrite in shooting residues, generally only qualitative analysis is carried out; for the detection of the shooting time of guns, the conclusion of whether they have been fired within three days can only be given in a general range, and the error is relatively large. not tall

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  • Measuring method for gun shooting time

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[0037] The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention, and the following examples do not limit the present invention. The present invention can be explained in more detail by the following examples.

[0038] A method for measuring the shooting time of guns. Under the condition of acetic acid (HAC), the nitrite in the shooting residue undergoes diazotization reaction with p-aminobenzenesulfonic acid (SN), and then couples with α-naphthylamine (NC) Color development, using spectrophotometry to measure the nitrite content, draw the absorbance-nitrite content standard curve; extract and analyze the shooting residues corresponding to different times after shooting, and obtain the change relationship between absorbance and shooting time. The absorbance-time relationship is converted into the relationship curve of nitrite content-shooting time; the absorbance value of the suspected shooting gun extr...

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Abstract

Provided is a measuring method for gun shooting time. On the condition of acetic acid (HAC), nitrite and sulfanilic acid (SN) have a diazo reaction and then couple with alpha-naphthylamine (NC) for coloration. Based on the light absorption characteristic of the product, spectrophotometry is adopted to measure the content of nitrite in shooting residue. The residue in a gun barrel obtained at different time after shooting is extracted for analysis, a relation curve of the content of nitrite and shooting time is obtained, and thus gun shooting time is determined. The measuring method for gun shooting time is capable of providing an effective method for detection of gun shooting time, causes no damage to a gun on the premise of guaranteeing extraction effect, has the advantages of being accurate, fast, high in sensitivity, good in stability, reliable in results and the like, and meets the requirements for detection and scientific research of gun shooting time.

Description

technical field [0001] The invention belongs to the technical field of shooting residue analysis and shooting time detection, and specifically refers to measuring the shooting time of the gun by measuring the content of nitrite in the gun shooting residue and the relationship between the content and time. technical background [0002] The composition of shooting residues in guns is complex, not only in trace or trace levels, but also in different detection methods for different components; at present, the detection of nitrite in shooting residues in my country is mainly focused on qualitative analysis, and more attention is paid to quantitative analysis. There are few, and there is no report on the application of its content with time to detect the shooting time. There is no relatively mature technology and method from the extraction conditions of the residual nitrite on the inner wall of the gun to the determination of the shooting time. [0003] In recent years, there has b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 李重阳丁斌俞诗源李波阳杨洪国
Owner GANSU INST OF POLITICAL SCI & LAW
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