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GB/T 24572.2-2009: Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 2: Direct headspace vapors sampling
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24572.2-2009 | English | 149 |
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Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 2: Direct headspace vapors sampling
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GB/T 24572.2-2009
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Basic data | Standard ID | GB/T 24572.2-2009 (GB/T24572.2-2009) | | Description (Translated English) | Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 2: Direct headspace vapors sampling | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C82 | | Classification of International Standard | 13.220.01 | | Word Count Estimation | 5,592 | | Date of Issue | 2009-10-30 | | Date of Implementation | 2010-04-01 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the principles and characteristics of the fire scene flammable liquid residues extracted, equipment and apparatus and test procedure. This section applies to laboratory extraction gasoline, kerosene, diesel, paint thinner and flammable liquids such as ethanol fire common residues. | GB/T 24572.2-2009: Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 2: Direct headspace vapors sampling
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Standard practice for separation and concentration of ignitable liquid residues from fire debris samples Part 2. Direct headspace vapors sampling
ICS 13.220.01
C82
National Standards of People's Republic of China
Scene of the fire flammable liquid residue laboratory extraction method
Part 2. Direct headspace method
Posted 2009-10-30
2010-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 24572 "scene of the fire flammable liquid residue laboratory extraction method" is divided into five sections.
--- Part 1. solvent extraction;
--- Part 2. Direct headspace method;
--- Part 3. Activated Carbon Adsorption;
--- Part 4. Solid phase micro extraction;
--- Part 5. Purge and Trap Method.
This is Part 2 GB/T 24572 of.
This section presents the People's Republic of China Ministry of Public Security.
This part of the National Technical Committee of Standardization Technical Committee eleventh Fire (SAC/TC113/SC11) centralized.
This section is drafted. Tianjin Fire Research Institute of Ministry of Public Security.
The main drafters of this section. Liangguo Fu, Lu Zhi Bao Zheng Wei, Deng Zhenyu, Tian osmanthus, Fan Zilin.
Scene of the fire flammable liquid residue laboratory extraction method
Part 2. Direct headspace method
1 Scope
This section GB/T 24572 specifies the scene of the fire principle flammable liquid residue extracted and features, and equipment and test equipment
step.
This section applies to laboratory extraction gasoline, kerosene, diesel fuel, paint thinner and alcohol fire scene common flammable liquid residue.
2 Normative references
The following documents contain provisions which, through reference GB/T 24572 in this section constitute provisions of this section. 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.
GB/T 18294 (all parts) Identification of fire technology
GB/T 20162 Fire Identification evidence Extraction
3 Terms and Definitions
GB/T 18294 (all parts) and GB/T 20162 and established the following terms and definitions apply to this section.
3.1
A can containing liquid and solid material and has a medical sealing container.
3.2
The samples placed in a sealed container means, to maintain a certain temperature so that samples the vapor - phase equilibrium between the liquid phase is formed, and then with a syringe
Or autosampler extracted directly above the gas components for instrument analysis.
4 Principles and Characteristics
4.1 Principle
The samples placed in sealed airtight container means, means for heating the closed container, so that one of flammable liquid residues to volatile ingredient
Hair, and then extract the gas component volatilized by gas chromatography (GC) or gas chromatography - mass spectrometry (GC-MS) detection.
4.2 Characteristics
Headspace method has the following characteristics.
a) the number of samples can be extracted depends on the size of the sealed container means;
b) adapted to extract a low boiling point of flammable liquids do not apply to extract higher boiling flammable liquids;
c) When the tested materials containing both volatile and less volatile component, due to the high concentration of volatile components and generating greater pressure will
Suppress difficult to extract the volatile components;
d) by the method treated samples, solvent extraction method can also be used again.
5 Equipment and Apparatus
5.1 Device
With temperature oven, heating mantle, autosampler heating plate, temperature setting range is preferably 40 ℃ ~ 150 ℃.
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