GB/T 18606-2017 in English
SUPERSEDEDThe test method for biomarkers in sediment and crude oil by GC-MS
- Issued on:2017-05-12
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
$214.00
《GB/T 18606-2017气相色谱-质谱法测定沉积物和原油中生物标志物》由TC355(全国石油天然气标准化技术委员会)归口,TC355SC3(全国石油天然气标准化技术委员会石油地质勘探分会)执行,主管部门为国家标准化管理委员会。
Introduction
Standard Technology Evolution and Core Upgrade
| Dimensions | 2001 Edition | 2017 Edition Upgrade Content |
|---|---|---|
| Detection Compounds | Basic Tricycloalkanes, Hopanes | 7 New Compounds: Bicyclic Sesquiterpenes, Polycyclic Aromatic Hydrocarbons, etc. |
| Chromatogram Specifications | Appendix B has fewer diagrams | Add 8 types of mass chromatograms (Figures B.1-B.8) |
| Mass Spectrometer Parameters | Scanning Mass Number ≥500 | Explicitly require ≥650amu |
Technical requirements for key instruments
The core equipment Gas Chromatography-Mass Spectrometer must meet the following requirements:
- EI ion source electron energy70eV
- Capillary column stationary phase is 5% benzylsiloxane
- Carrier gas purity ≥99.99% nitrogen
Compound identification system
Typical application case: The following were detected in a crude oil sample from an oil field:
- The m/z 191 chromatogram shows that the C31 hopane (22S/22R) peak separation is 92%
- m/z 217 spectrum successfully identified ααα-C29sterane (20R)
Quality Control Requirements
| Indicators | Requirements | Detection Methods |
|---|---|---|
| Resolution | Complete Separation of C31 Hopane Dimers | Peak Height Ratio Method |
| Precision | Repeatabilityr=0.0047+0.0125m | GB/T 6379.1 |
Implementation Suggestions
Operational precautions:
- During tuning, ensure that the peak height of m/z 69 is 100% and the peak height of m/z 219 is 40-80%
- For aromatic analysis, a 3℃/min gradient temperature increase is recommended
- For highly mature samples, focus on the sterane 20S/20R separation

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