GB/T 14327-2009 English PDF

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GB/T 14327-2009: Determination of thiophene content in benzene
Status: Valid

GB/T 14327: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14327-2009	149	Add to Cart	2 days	Determination of thiophene content in benzene	Valid
GB/T 14327-1993	199	Add to Cart	2 days	Determination of thiophene content in benzene	Obsolete

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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Older Standard (superseded by this standard): GB/T 14327-1993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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