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GB/T 32492-2016: Content of dimethyl ether in liquefied petroleum gas by gas chromatography
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32492-2016 | English | 219 |
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Content of dimethyl ether in liquefied petroleum gas by gas chromatography
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GB/T 32492-2016
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Basic data | Standard ID | GB/T 32492-2016 (GB/T32492-2016) | | Description (Translated English) | Content of dimethyl ether in liquefied petroleum gas by gas chromatography | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P45 | | Classification of International Standard | 75.160.30 | | Word Count Estimation | 11,124 | | Date of Issue | 2016-02-24 | | Date of Implementation | 2017-01-01 | | Quoted Standard | GB/T 4946; GB/T 5274 | | Regulation (derived from) | National Standard Announcement No | | 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 for the determination of dimethyl ether in liquefied petroleum gas by gas chromatography. This standard is applicable to the determination of dimethyl ether in liquefied petroleum gas. | GB/T 32492-2016: Content of dimethyl ether in liquefied petroleum gas by 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.
Content of dimethyl ether in liquefied petroleum gas by gas chromatography
ICS 75.160.30
P45
National Standards of People's Republic of China
LPG DME content
Gas Chromatography
Issued on. 2016-02-24
2017-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This standard is under the jurisdiction of the Ministry of Housing and Urban Gas Standardization Technical Committee.
This standard is drafted by. Zhejiang Quality Inspection Institute of Science, North China Municipal Engineering Design & Research Institute Co., Ltd.
It participated in the drafting of this standard. National Chemical Industrial Gases Product Quality Supervision and Inspection Center (Fujian), Beijing Puri Analytical Instruments Co., national gas appliances Quality Supervision and Inspection Center.
The main drafters of this standard. Ye Jing, Li Wenshuo, Zou Zhen, Li Jing liter, Chen Lan, Shen Kang.
LPG DME content
Gas Chromatography
1 Scope
This standard specifies the method for determination of liquefied petroleum gas dimethyl ether content by gas chromatography.
This standard applies to the determination of liquefied petroleum gas dimethyl ether content.
2 Normative references
The following documents for the application of this document is essential. For cited documents with dates, only the dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 4946 GC term
GB/T 5274 gas analyzer calibration weighing method for preparing a mixed gas
3 Terms and Definitions
GB/T 4946 defined the terms and definitions apply to this document.
4 principle of the method
4.1 Under the selected chromatographic conditions of work, the gas sample into the chromatographic system, through the column so that DME and LPG effective separation of the components, note the peak value of DME.
Under the same chromatographic operating conditions with external standard method known standard gas dimethyl ether content of the sample is measured in the peak value of DME and DME standard gas chromatographic peak value calculated by comparing DME content in the sample.
4.2 component separation in the column should meet the following requirements (see Figure 1).
a) When component content greater than or equal to 5%, A/B should be greater than 0.8;
b) when the component content is less than 5%, A/B should be greater than 0.4;
c) In the sub-group adjacent to the large component, take the small peak of the slope as a baseline.
A/B ratio of the legend of team points Peak A/B ratio of Legends
Explanation.
A --- deep valley between two peaks;
B --- two adjacent peaks high above the baseline of the smaller peak.
Figure 1 fractionation effect on column
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