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GA/T 1945-2021: Forensic sciences - Common inorganic explosives and their residues testing - Chemical method
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Forensic sciences - Common inorganic explosives and their residues testing - Chemical method
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GA/T 1945-2021
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Basic data | Standard ID | GA/T 1945-2021 (GA/T1945-2021) | | Description (Translated English) | Forensic sciences - Common inorganic explosives and their residues testing - Chemical method | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 17,167 | | Date of Issue | 2021-10-14 | | Date of Implementation | 2022-05-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1945-2021: Forensic sciences - Common inorganic explosives and their residues testing - Chemical method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13.310
CCSA92
People's Republic of China Public Security Industry Standards
Forensic Science Common Inorganic Explosives and Their
Chemical method for the examination of explosive residues
residue testing-Chemical method
Released on 10-14-2021
2022-05-01 implementation
Released by the Ministry of Public Security of the People's Republic of China
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document was proposed by the National Criminal Technology Standardization Technical Committee Physical and Chemical Inspection Sub-Technical Committee (SAC/TC179/SC4) and submitted
Focus on.
This document was drafted by. Criminal Science and Technology Research Institute of Tai'an Public Security Bureau, Physical Evidence Appraisal Center of Ministry of Public Security, Chief Criminal Investigation Department of Beijing Public Security Bureau
Criminal Technology Detachment, Guangxi Zhuang Autonomous Region Public Security Bureau Criminal Investigation Team, Xinjiang Uygur Autonomous Region Public Security Bureau Criminal Investigation Team Criminal Division Center, Shanxi
Provincial Public Security Department Science and Technology Department, Guizhou Provincial Public Security Department Evidence Appraisal Center, Heilongjiang Provincial Public Security Department Criminal Technology Team, Guangdong Provincial Public Security Department Criminal Technology
Center, Criminal Technology Institute of Guangzhou Public Security Bureau, People's Public Security University of China, Criminal Division Institute of Criminal Police Detachment of Jinan Public Security Bureau, Chinese Criminal Police
college.
The main drafters of this document. Li Wenhai, Shao Kai, Liu Zhanfang, Zhu Jun, Zhang Guannan, Sun Honglei, Lin Dawei, Li Xiuyun, Zheng Jiajia, Xia Qingbing,
Li Xin, Liu Xiaofeng, Qiao Wentao, Li Wei, Zhang Gaoqin, Chen Shi, Li Yunzhi, Yu Weibiao, Zhang Liang, Lin Xianwen, Yang Ruiqin, Wu Jifeng, Li Jimin.
Forensic Science Common Inorganic Explosives and Their
Chemical method for the examination of explosive residues
1 Scope
This document specifies the chemical examination methods for 16 inorganic ions in common inorganic explosives and their explosive residues in the field of forensic science.
This document applies to ammonium ions (NH4) and nitrate ions in common inorganic explosives and their explosive residues in the field of forensic science
(NO3-), nitrite ion (NO2-), potassium ion (K), sulfur ion (S2-), sodium ion (Na), magnesium ion (Mg2), aluminum ion
(Al3), strontium ion (Sr2), copper ion (Cu2), barium ion (Ba2), chloride ion (Cl-), chlorate ion (ClO3-), perchlorate ion
The screening tests for ion (ClO4-), sulfate ion (SO42-), and thiocyanate ion (SCN-) can be used by reference in other fields.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
GA/T 242 Physicochemical Examination Terminology for Trace Evidence in Forensic Science
3 Terms and Definitions
The terms and definitions defined in GA/T 242 apply to this document.
4 principles
Based on the chemical reaction of substances, through trace color reaction (mainly including acid-base reaction, redox reaction, complexation reaction, etc.), microscopic
Quantitative precipitation reaction and micro-crystallization test and other methods for screening test, see Appendix A.
5 reagents
5.1 Deionized water (resistivity not less than 18.2MΩ·cm).
5.2 Reagents required for ammonium ion (NH4) test.
a) potassium hydroxide (KOH) solution (10%);
b) Naphthalene's reagent (tetraiodomercury complex ion). Take 1.0g of mercuric chloride and dissolve it in 70mL of water, add 3.5g of potassium iodide, and then add 25% hydroxide
Potassium chloride solution 30mL;
c) Ammonium ion (NH4) standard ion solution.
5.3 Reagents required for nitrate ion (NO3-) test.
a) sulfuric acid solution of strychnine (0.02%);
b) Concentrated sulfuric acid (H2SO4) (95%~98%);
c) ferrous sulfate (FeSO4 7H2O) solution (1mol/L);
d) diphenylamine concentrated sulfuric acid solution (1%);
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