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GB/T 14327-2009: Determination of thiophene content in benzene
Status: Valid GB/T 14327: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 14327-2009 | English | 149 |
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Determination of thiophene content in benzene
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GB/T 14327-2009
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| GB/T 14327-1993 | English | 199 |
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Determination of thiophene content in benzene
| Obsolete |
GB/T 14327-1993
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PDF similar to GB/T 14327-2009
Basic data | Standard ID | GB/T 14327-2009 (GB/T14327-2009) | | Description (Translated English) | Determination of thiophene content in benzene | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G17 | | Classification of International Standard | 71.080.15 | | Word Count Estimation | 5,575 | | Date of Issue | 2009-07-08 | | Date of Implementation | 2010-04-01 | | Older Standard (superseded by this standard) | GB/T 14327-1993 | | Quoted Standard | GB/T 1999; GB/T 9977; YB/T 5155 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.9 (Total No.149) | | 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 principles of benzene thiophene content determination, reagents, instrument, trial preparation, test procedure, results of calculations and experimental error. This standard applies to the determination of benzene thiophene content. Determination Fan States 0. 1mg/kg ~ 250mg/kg range of benzene. | GB/T 14327-2009: Determination of thiophene content in benzene---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.
Determination of thiophene content in benzene
ICS 71.080.15
G17
National Standards of People's Republic of China
Replacing GB/T 14327-1993
Determination of thiophene content of benzene
Posted 2009-07-08
2010-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 14327-1993 "Determination of thiophene thiophene benzene content."
This standard and GB/T 14327-1993 compared to the main changes are as follows.
--- Increase the "sampling" section;
--- Some units and standardized format.
The standard proposed by China Iron and Steel Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee.
This standard was drafted. Wuhan University of Science and Technology, Metallurgical Industry Information Standards Institute.
The main drafters of this standard. Ho Xuan-ming, Zhao Minlun, Zhang Shaochun, Zhao Jinlong, Sun Wei.
This standard replaces the standards previously issued as follows.
--- GB/T 14327-1993.
Determination of thiophene content of benzene
1 Scope
This standard specifies the principles of thiophene benzene content determination, reagents, instruments, test preparation, test procedure, the results of calculations and experimental error.
This standard applies to the determination of the content of benzene thiophene. Determination of the range of 0.1mg/kg ~ 250mg/kg range benzene.
Note. The benzene content is higher thiophene diluted to a suitable concentration range of the re-measurement.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 1999 coking oil products sampling methods
GB/T 9977 coking products term
YB/T 5155 Determination of coking products General
Principle 3
Benzene thiophene and indole quinones react to produce sulfuric acid soluble blue indigo thiophene enjoin carried spectrophotometry.
4 Reagents
4.1 thiophene. gas chromatography reference material purity ≥99%.
4.2 isatin. AR.
4.3 chloroform. AR.
4.4 Sulfate. AR.
4.5 sulfuric acid. pure class distinctions.
4.6 benzene or toluene. not more than 0.005 absorbance.
4.7 isatin - chloroform solution. Weigh finely isatin 0.05g (weighing accuracy of 0.0002g), placed in 100mL flask brown
In chloroform was dissolved and diluted to the mark. After leaving 5d using (often required during placement shaking), within 40d valid.
4.8 ferric sulfate - sulfuric acid solution. Weigh Sulfate 0.05g (weighing accuracy of 0.0002g) in the beaker, add 19mL distilled water, stirring until completely
After the dissolution of the whole, adding an appropriate amount of concentrated sulfuric acid. After cooling, the brown transferred 500mL volumetric flask, beaker was washed several times with concentrated sulfuric acid, and the washings were
Into a volumetric flask, dilute to the mark with concentrated sulfuric acid. After leaving 5d using (often required during placement shaking).
5 Instruments
5.1 Spectrophotometer. wavelength of 400nm ~ 700nm.
5.2 cuvette. optical path 0.5cm.
5.3 funnel. 50mL, 250mL, 500mL and 1000mL.
5.4 straw. 1mL, single reticle.
5.5 scale straw. 2mL, 10mL, to tip the scale.
5.6 flask. Brown, 50mL, 250mL, 500mL.
5.7 cylinder. 25mL.
5.8 Syringe. 1mL.
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