GA/T 823.2: Evolution and historical versions
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(Forensic Science - Testing methods for paint evidence - Part 2: Ironmaking blast furnaces)
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GA/T 823.2-2024
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| GA/T 823.2-2009 | English | 159 |
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Analysis method for paint fragment--Part 2: Infrared absorption spectrometry
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GA/T 823.2-2009
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Basic data | Standard ID | GA/T 823.2-2024 (GA/T823.2-2024) | | Description (Translated English) | (Forensic Science - Testing methods for paint evidence - Part 2: Ironmaking blast furnaces) | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 07.140 | | Date of Issue | 2024-12-13 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | GA/T 823.2-2009 | | Issuing agency(ies) | Ministry of Public Security | GA/T 823.2-2009: Analysis method for paint fragment--Part 2: Infrared absorption spectrometry---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.
Analysis method for paint fragment - Part 2. Infrared absorption spectrometry
ICS 13.310
A92
People's Republic of China Public Security Industry Standards
Paint Evidence of test methods
Part 2. Infrared absorption spectrometry
Posted 2009-03-09
2009-05-01 implementation
People's Republic of China Ministry of Public Security
Foreword
GA/T 823 "Test methods Paint Evidence" is divided into three parts.
--- Part 1. color matching method;
--- Part 2. Infrared absorption spectrometry;
--- Part 3. Scanning electron microscopy/energy dispersive spectroscopy method.
This section GA/T 823 Part 2.
The criminal section of the National Standardization Technical Committee Physical Testing Standardization Technical Committee (SAC/TC179/SC4) mention
And the focal point.
This section is drafted. Shanghai Public Security Bureau of Criminal Science and Technology Institute.
The main drafters of this section. Ding Minju, Shao Zhiyuan.
Paint Evidence of test methods
Part 2. Infrared absorption spectrometry
1 Scope
GA/T 823.2 of this part of the provisions of the infrared spectrometer analysis of paint.
This section applies to analytical testing technology in the field of criminal paint samples, may also refer to other areas of use.
2 Normative references
The following documents contain provisions which, through reference GA/T in this part 823, constitute provisions of this part. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
TESTING - Part 1 GB/T 19267.1-2008 criminal trace evidence. infrared absorption spectroscopy
TESTING term GA/T 242 trace evidence
3 Terms and Definitions
Terms and definitions GB/T 19267.1-2008 and GA/T 242 established in this section apply.
4 Equipment and materials
Equipment and materials required are as follows.
a) Fourier transform infrared spectroscopy, infrared microscopes can be configured, attenuated total reflection (ATR), diffuse reflectance, diamond pool and other accessories;
b) a tablet press;
c) an agate mortar;
d) drying me;
e) potassium bromide powder;
f) stereoscopic optical microscope.
5 samples processed
5.1 microscope sample
Observation of samples under stereomicroscope morphology of monolayer paint pieces extracted directly; multilayer paint films, layered cut from extraction.
5.2 sampling requirements
5.2.1 paint with a scalpel and other tools for sample separation, tools should be kept clean, all of Alcohol cotton cleaning process each sample.
5.2.2 paint samples cut from the hierarchy should be avoided incomplete separation of components caused by interference between the layers.
6 sample preparation method
Carried out according to the provisions of 6.2 19267.1-2008 GB/T.
7 Procedure
7.1 Instrument Preparation
7.1.1 IR chamber temperature and humidity meet the demand of the instrument.
Annex 7.1.2 infrared spectrometer host connection and configuration of the normal optical path stability.
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