GB/T 18340.5-2010Organic geochemical analysis methods for geological samples - Part 5: Analysis of saturated hydrocarbons in rock extracts and crude oils - Gas chromatography (English PDF)
地质样品有机地球化学分析方法 第5部分：岩石提取物和原油中饱和烃分析 气相色谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 10, 2010
Implementation date
February 1, 2011
Scope
GB/T 18340.5-2010 is the English-translated version of 地质样品有机地球化学分析方法 第5部分：岩石提取物和原油中饱和烃分析 气相色谱法.
GB/T 18340.5-2010 is the Chinese standard "Organic geochemical analysis methods for geological samples - Part 5: Analysis of saturated hydrocarbons in rock extracts and crude oils - Gas chromatography".
Its scope clause reads: This section GB/T 18340 specifies the rock and extract crude oil saturated hydrocarbon fraction is analyzed by gas chromatography method, chromatography geochemical parameters Calculation and precision requirements.
This section applies to crude oil and rock extracts of saturated hydrocarbon components.
Principle 2 Saturated hydrocarbon sample fraction chromatography using a flame ionization detector components have been flowing in the gas chromatograph, In the area normalization method to calculate the relative percentage of each component, press the appropriate formula to calculate the chromatogram geochemical parameters. Its clauses include reagents and materials; instrument; sample preparation.
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Document preview — GB/T 18340.5-2010
National Standard of the People's Republic of China
- ICS
- 73.010
- Classification
- D 04
- Replacing
- GB/T 18340.5-2001
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 3 Reagents and materials
- 4 Instrument
- 5 Sample Preparation
1 Scope
This section GB/T 18340 specifies the rock and extract crude oil saturated hydrocarbon fraction is analyzed by gas chromatography method, chromatography geochemical parameters
Calculation and precision requirements.
This section applies to crude oil and rock extracts of saturated hydrocarbon components.
Principle 2
Saturated hydrocarbon sample fraction chromatography using a flame ionization detector components have been flowing in the gas chromatograph,
In the area normalization method to calculate the relative percentage of each component, press the appropriate formula to calculate the chromatogram geochemical parameters.
3 Reagents and materials
3.1
Reagents.
a) hexane. AR (by weight distilled) or chromatography;
b) isooctane. AR (by weight distilled) or chromatography.
3.2
Gas.
a) Carrier gas. nitrogen or helium (purity of not less than 99.99%);
b) Gas. Hydrogen (purity of not less than 99.9%);
c) assisting gas. air.
3.3 micro syringe
1µL ~ 10µL.
3.4 plug small mouth vial
1mL ~ 2mL.
3.5 Columns
poly methyl silicone stationary phase or poly phenyl methyl silicone crosslinked silica capillary column, column length 20m ~ 30m, the inner diameter
0.2mm ~ 0.32mm.
4 Instrument
Gas chromatography. capillary column can be accessed with a split/splitless injection system, temperature programming systems and a flame ionization detector means,
And is equipped with a computer workstation chromatography or chromatography data processing system.
5 Sample Preparation
5.1
Weigh 30mg ~ 50mg rock or crude extract samples overnight with 30mL of n-hexane was dissolved asphaltene precipitation; was treated with 60 °C
Water bath and concentrated to 1mL ~ 2mL, transferred to a sample containing 2mg 4mg alumina and silica gel column chromatography, using 20mL of n-hexane fraction
Rinsed 4 times the saturated hydrocarbon fraction, a saturated hydrocarbon solution was concentrated with 40 °C transferred to stoppered vials small opening in the back.
5.2
split injection mode, the sample is dissolved with hexane back injector; splitless mode, the sample was dissolved with isooctane backward like.
Step 6 Analysis 6.1 Gas Chromatograph open road and circuitry.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 18340.5
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 18340.5-2010 | Organic geochemical analysis methods for geological samples - Part 5: Analysis of saturated hydrocarbons in rock extracts and crude oils - Gas chromatography | current edition | Current |
| GB/T 18340.5-2001 | Organic geochemical analysis methods for geological samples - Part 5: Analysis of saturated hydrocarbons in rock extracts and crude oils - Gas chromatography | previous edition | Superseded |
This page sells the current edition, GB/T 18340.5-2010. Earlier editions are listed for reference only.
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Related Standards
GB/T 18340.1-2010 — Organic geochemical analysis methods for geological samples - Part 1: Analysis of light crude oils - Gas chromatography
GB/T 18340.2-2010 — Organic geochemical analysis method for geological samples - Part 2: Determination of organic carbon stable isotopic component - Isotopic mass spectrometry
GB/T 18340.3-2010 — Organic geochemical analysis method for geological samples - Part 3: Determination of saturated hydrocarbon group components in heavy fraction of oil - Mass spectrometry
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GB/T 18340.5-2010
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