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SN/T 3912.2-2014: Determination of paraffins, olefins, naphthenes and aromatics(PONA) in condensate for import - Gas chromatography
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| SN/T 3912.2-2014 | English | 519 |
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Determination of paraffins, olefins, naphthenes and aromatics(PONA) in condensate for import - Gas chromatography
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SN/T 3912.2-2014
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Basic data | Standard ID | SN/T 3912.2-2014 (SN/T3912.2-2014) | | Description (Translated English) | Determination of paraffins, olefins, naphthenes and aromatics(PONA) in condensate for import - Gas chromatography | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | E30 | | Classification of International Standard | 75.080 | | Word Count Estimation | 20,242 | | Date of Issue | 4/9/2014 | | Date of Implementation | 11/1/2014 | | Regulation (derived from) | State inspection certification (2014) 210 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the gas chromatographic determination of condensate alkanes (paraffins), olefins (olefins), cycloalkanes (naphthenes) and aromatics (aromatics) content approach. This standard applies to the determination olefin content of less tha | SN/T 3912.2-2014: Determination of paraffins, olefins, naphthenes and aromatics(PONA) in condensate for import - Gas chromatography
---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.
(Import condensate in alkanes, alkenes, cycloalkanes and aromatics (PONA) by Gas Chromatography)
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Imported condensate alkanes, alkenes, cycloalkanes and
Aromatics (PONA) by gas chromatography
Determinationofparaffins, olefins, naphthenesandaromatics (PONA) in
Issued on. 2014-04-09
2014-11-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
SN/T 3912 is divided into three parts.
--- Part 1. Imported condensate quality evaluation criteria;
--- Part 2. Imported condensate in paraffins, olefins, naphthenes and aromatics (PONA) by gas chromatography;
--- Part 3. Determination of condensate oil imports of mercury content in the direct injection method.
This section SN/T 3912 Part 2.
This section according to GB/T 1.1-2009 given rule drafting.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section was drafted by. People's Republic of China Guangdong CIQ.
The main drafters of this section. Preface Feng Wu, Xie Wei Xin, Zhang Haifeng, Zhangcheng Chen, Shu Bao, Zheng Jianguo.
Imported condensate alkanes, alkenes, cycloalkanes and
Aromatics (PONA) by gas chromatography
1 Scope
SN/T 3912 provisions of this part using gas chromatography condensate alkanes (paraffins), olefins (olefins), cycloalkanes
(Naphthenes) and aromatics (aromatics) method content.
This section applies to the olefin content of less than 1% of the carbon atoms in the condensate is not greater than the determination of various hydrocarbon components 13, and gives the hydrocarbon family
PONA analysis.
2 Summary of Method
The representative condensate sample introduction gas chromatograph, nitrogen carrier gas vaporized sample into the column, separating out the constituents
Outflow component with a flame ionization detector. All hydrocarbon monomer gas chromatogram are not greater than 13 carbon atoms were analyzed by school
Positive factor normalization method to calculate the mass and density, respectively, percentages and volume percentages of components, according to the carbon number and type of ownership of components into
Plus classify and obtain PONA analysis results.
NOTE. Test step of separating condensate component will use the method described, there are some mixed peak, this method can not determine the relative concentration of the mixed peak outflow component simultaneously
degree. In the absence of supporting information, if you need to know the relative content of such components is not recommended to use this method.
3 Reagents and materials
3.1 n-pentane. Purity ≥99%.
3.2 petroleum ether. boiling range 30 ℃ ~ 60 ℃.
3.3 Carrier gas. nitrogen, purity ≥99.99%.
3.4 Gas. hydrogen, purity ≥99.9%.
3.5 Compensation gas. helium or nitrogen purity ≥99.99%.
4 Instrument
Gas chromatograph. equipped with a FID detector.
5 Sample
At 0 ℃ ~ 1 ℃ refrigerated sample, and the sample has been stored prior to assay at this temperature.
Step 6 Analysis
6.1 Gas Chromatograph Operating Conditions
The following operating conditions are typical, according to the characteristics of different instruments, given operating conditions make the appropriate adjustments to get the best results.
a) FID detector temperature. 300 ℃;
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