GB/T 24572.5-2013 English PDF

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GB/T 24572.5-2013: Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 5: Purge and trap concentration
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24572.5-2013	139	Add to Cart	3 days	Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 5: Purge and trap concentration	Valid

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Basic data

Standard ID: GB/T 24572.5-2013 (GB/T24572.5-2013)
Description (Translated English): Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 5: Purge and trap concentration
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C82
Classification of International Standard: 13.220.01
Word Count Estimation: 6,680
Quoted Standard: GB/T 18294.3; GB/T 18294.5
Regulation (derived from): National Standards Bulletin No. 25 of 2013
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 laboratory using purge and trap method to extract the fire scene residues of flammable liquids in common terms and definitions, principles and characteristics of materials and equipment and test procedures. This standard applie

GB/T 24572.5-2013: Standard practice for separation and concentration of ignitable liquid residues from fire debris samples -- Part 5: Purge and trap concentration

---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.
Standard practice for separation and concentration of ignitable liquid residues from fire debris samples Part 5.. Purge and trap concentration ICS 13.220.01 C82 National Standards of People's Republic of China Scene of the fire flammable liquid residue laboratory extraction method Part 5. Purge and Trap firedebrissamples-Part 5. Purgeandtrapconcentration Issued on. 2013-12-17 2014-05-01 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 the following 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 5 GB/T 24572 of. This section drafted in accordance with GB/T 1.1-2009 given rules. This section presents the People's Republic of China Ministry of Public Security. This part of the National Technical Committee of Standardization Technical Committee Fire Fire Investigation (SAC/TC113/SC11) centralized. This section is responsible for drafting unit. Ministry of Public Security in Tianjin Fire Research Institute. Participated in the drafting of this section. Liaoning Province Public Security Fire Department, Heilongjiang Province Public Security Fire Department, the Tianjin Public Security Fire Corps. The main drafters of this section. Deng Zhenyu, Liu Zhengang, Tian Guihua, Fan Zilin, Liang Guofu, Sun Guofeng, Liu Hongwei, Li Jian, Chen Ke, Wang Xin. This section first release. Scene of the fire flammable liquid residue laboratory extraction method Part 5. Purge and Trap

1 Scope

This section GB/T 24572 specifies the scene of the fire in the common laboratory flammable liquid residue terminology extraction using purge and trap method And definitions, principles and characteristics of materials and equipment and test procedures. This section applies to the extraction of the laboratory fire scene gasoline, kerosene, diesel oil and paint thinners and other common flammable liquid residues.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 18294.3 Technical identification method for fire Part 3. Gas Chromatography GB/T 18294.5 fire technical appraisal methods - Part 5. gas chromatography - mass spectrometry

3 Terms and Definitions

3.1 Purge and trap method purgeandtrapconcentration One kind of continuous purging with an inert gas samples to be analyzed, the volatile organic substances by purging out and collected in the trap of adsorption, Heating the trap to make these components desorbed and transferred to a gas chromatograph or gas chromatograph/mass spectrometer flammable liquid residue detection test Chamber extraction method. 3.2 Trap trap Trapping flammable liquid residue component means for containing the adsorbent.

4 Principles and Characteristics

4.1 Principle High purity inert gas such as nitrogen at a constant flow continuous purge samples, flammable liquid residue blown component is adsorbed in the trap in. The trap is rapidly heated so that flammable liquid residue component desorption, and high purity nitrogen gas into the purge gas chromatography or gas chromatography - Mass spectrometer for detection. 4.2 Characteristics Purge and trap method has the following characteristics. --- Does not destroy the morphology of samples; --- Suitable for large volumes of samples extracted; --- Ingredients suitable for flammable liquids with low residue samples were extracted; --- Not suitable for the extraction of oil, high boiling point substances. ......

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