GB/T 33029-2016 in English
SUPERSEDEDComposition of turpentine and related terpene products一 Test methods of capillary gas chromatography
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 33029-2016松节油及相关萜烯产品组成 毛细管气相色谱分析方法》由TC558（全国林化产品标准化技术委员会）归口，主管部门为国家林业和草原局。
Introduction
Background and significance of the standard
GB/T33029-2016 "Capillary gas chromatography analysis method for the composition of turpentine and related terpene products" is China's first standardized analysis method for turpentine and related terpene products, filling the domestic technical gap in this field.
Scope of application and core principles
| Project | Description |
|---|---|
| Scope of application | Turpentine, dipentene, pine oil, rosin neutral terpenes and other related terpene products |
| Core principles | Gas chromatography performs quantitative analysis through the retention time and peak area of the components, and adopts a combination of internal standard method and normalization method to ensure accuracy. |
Instrument and Equipment Requirements
Gas chromatograph shall be equipped with a hydrogen flame ionization detector (FID) and a program temperature control system. It is recommended to use a quartz capillary column (e.g. 30m long, 0.25mm inner diameter, 0.25μm film thickness) coated with a non-polar or weakly polar stationary liquid.
Analysis Steps and Technical Details
Preparation of Standard Solutions
- Calibration Standard Solution: Weigh 50mg of α-pinene, β-pinene and other standard samples and 15mg of n-decane, add 1mL of n-hexane and shake well.
- Retention Time Standard Solution: Prepare in the same way as above but without adding the internal standard.
Sample processing and analysis
- Sample preparation: Weigh 50mg of terpene sample and 15mg of n-decane, add 1mL of n-hexane and mix thoroughly.
- The injection volume is controlled within the range of 0.1μL~1.0μL, and the peak area of each component is recorded.
Result calculation and reporting
Based on the peak area of each component in the chromatogram, the mass fraction is calculated using the relative correction factor formula (Fi = AE*mR / (AR*mE)) and the normalization method (c_i = Ai / ∑Ai *100), and the reported results are retained to one decimal place.
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