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GB/T 33649-2017 English PDF

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GB/T 33649-2017: Determination of oxygenates and aniline compounds in motor gasoline -- Gas chromatography
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PDF similar to GB/T 33649-2017


Standard similar to GB/T 33649-2017

GB 35793   GB/T 33646   GB/T 32066   GB/T 33648   

Basic data

Standard ID GB/T 33649-2017 (GB/T33649-2017)
Description (Translated English) Determination of oxygenates and aniline compounds in motor gasoline -- Gas chromatography
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard E31
Classification of International Standard 75.160.20
Word Count Estimation 20,250
Date of Issue 2017-05-12
Date of Implementation 2017-12-01
Quoted Standard GB/T 4756; GB/T 6683; GB/T 27867; NB/SH/T 0663
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 method of determining the content of oxygen compounds and aniline compounds in vehicle gasoline by gas chromatography. This standard is suitable for the determination of dimethoxymethane (also known as methylal), ethyl acetate, sec-butyl acetate, aniline, N-methyl aniline, o-methylaniline, Methyl aniline and p-methyl aniline; this standard can also be used to determine the vehicle gasoline in the methyl tert-butyl ether, methanol and other oxygen content of the components. The content of the components to be added is in the range of 0.05% to 15% of methyl tert-butyl ether: 0.05% to 10% of methanol, sec-butyl acetate, dimethoxymethane, ethyl acetate and aniline: -methylaniline, o-methylaniline, p-methylaniline and m-methylaniline

GB/T 33649-2017: Determination of oxygenates and aniline compounds in motor gasoline -- Gas chromatography


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Determination of oxygenates and aniline compounds in motor gasoline - Gas chromatography ICS 75.160.20 E31 National Standards of People's Republic of China Automotive oxygen and aniline compounds in gasoline Determination of gas chromatography Determination ofoxygenatesandanilinecompoundsinmotorgasoline- 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III Introduction IV 1 Scope 1 2 normative reference document 1 3 Summary of methods 1 4 reagents and materials 2 5 equipment 2 6 sampling 3 7 Instrument preparation 3 8 correction 4 9 Test Step 9 10 results calculated 9 11 precision 9 Quality Assurance and Control 13 Test Report 10 Appendix A (informative) Central cutting method for the characterization of components and the elimination of interference 11

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the National Petroleum Products and Lubricants Standardization Technical Committee (SAC/TC280). This standard is responsible for drafting units. China Petroleum & Chemical Corporation Petrochemical Research Institute. This standard participates in the drafting unit. Shenzhen Metrology Quality Inspection Research Institute, National Petroleum and Petrochemical Product Quality Supervision and Inspection Center (Guangdong), China Petroleum & Chemical Corporation Shanghai Petrochemical Research Institute and China Petroleum and Natural Gas Co., Ltd. Lanzhou Petrochemical Company. The main drafters of this standard. Li Changxiu, Zhao Yan, Xu Dongyu, Wenhuan, Wu Mei, Gao Zhirong, Guo Xing.

Introduction

Dimethoxymethane, ethyl acetate, sec-butyl acetate, aniline, N-methylaniline, o-methylaniline, m-methylaniline And p-methyl aniline and other unconventional addition of components, will be on the quality of gasoline and the use of performance impact, the determination of the content of these components beneficial In the vehicle gasoline product quality control and supervision. Automotive oxygen and aniline compounds in gasoline Determination of gas chromatography Caution - Personnel using this standard should have practical experience in formal laboratory work. The use of this standard may involve certain hazards Of the materials, equipment and operations, this standard does not indicate all possible safety issues. It is the user's responsibility to take appropriate safety and health measures And to ensure compliance with the provisions of the relevant national laws and regulations.

1 Scope

This standard specifies the method of using gas chromatography to determine the content of oxygen compounds and aniline compounds in vehicle gasoline. This standard applies to the determination of vehicle gasoline (including ethanol gasoline) in the dimethoxymethane (also known as methyl acetal), ethyl acetate, Esters, aniline, N-methyl aniline, o-methyl aniline, m-methyl aniline and p-methyl aniline; this standard can also be used in the determination of gasoline The content of the oxygen-containing compound component such as methyl tert-butyl ether and methanol. The mass fraction of the components to be added is the methyl tert-butyl group Ether. 0.05% to 15%; methanol, sec-butyl acetate, dimethoxymethane, ethyl acetate and aniline. 0.05% to 10%; N-methyl aniline, Aniline, p-methylaniline and m-methylaniline. 0.01% to 10%. Note. This standard can qualitatively detect dimethyl carbonate, but does not contain quantitative determination of the content. When necessary, this standard can also be used to determine the content of oxygen-containing compounds such as C2-C4 alcohols, ethyl tert-butyl ethers, t-amyl methyl ethers, This standard does not provide accurate data on these components. The content of these oxygen-containing compounds can be determined according to the NB/SH/T 0663 method Determination. Automotive gasoline may contain trace amounts of acetone, butanone and other ketones do not interfere with the determination.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Petroleum liquid manual sampling method GB/T 4756 Petroleum products - Test methods - Determination of precision data Automatic sampling of oil and liquid pipelines GB/T Determination of alcohols and ethers in gasoline - Gas chromatographic method

3 Summary of methods

3.1 Import the test sample with the internal standard ethylene glycol dimethyl ether (or 2-hexanone) into a center cut with microplate flow control (Deansswitch) components and two capillary columns. The components first enter the non-polar column and are divided according to the boiling point sequence The switching of the solenoid valve through the central cutting assembly only allows the components having a boiling point less than 2-hexanone to flow from the nonpolar column into the strong Polar column, the remaining components directly through the detector detection. The components of the strong polar column are used to achieve the hydrocarbon composition on the column The separation of oxygen - containing compounds was carried out by hydrogen flame ionization detector and quantified by internal standard method. Can be quantitatively detected gasoline fraction in the two (MTBE) contained in the sample, and the content of the other components such as methyl ethyl t-butyl ether (MTBE), methanol and the like Oxygen content.

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