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Test method for determination of free glycerol content in Fatty Acid Methyl Esters (FAME) by gas chromatography
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Basic data
| Standard ID | GB/T 28769-2012 (GB/T28769-2012) |
| Description (Translated English) | Test method for determination of free glycerol content in Fatty Acid Methyl Esters (FAME) by gas chromatography |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | E31 |
| Classification of International Standard | 75.160.20 |
| Word Count Estimation | 9,923 |
| Quoted Standard | GB/T 4756; GB/T 15687 |
| Adopted Standard | EN 14106-2003, MOD |
| Regulation (derived from) | National Standards Bulletin No. 28 of 2012 |
| 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 use of gas chromatography fatty acid methyl esters (FAME) in the range of 0. 005 wt % ~ 0. 07% of free glycerol content approach. This standard applies to evaluate pure state fatty acid methyl ester biodiesel quality. Glycerin |
GB/T 28769-2012: Test method for determination of free glycerol content in Fatty Acid Methyl Esters (FAME) 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.
ICS75.160.20
E31
National Standards of People's Republic of China
FAME Determination of free glycerol content
Gas chromatography
MethylEsters (FAME) bygaschromatography
Issued on. 2013-03-01 2012-11-05 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard rule according to GB/T 1.1-2009 given draft.
This standard uses redrafted law revision adopts the European standard EN14106.2003 "Animal and vegetable fats fatty acid methyl ester derivative tour
From glycerol content determination. "
This standard EN14106.2003 The main differences are as follows.
--- Increased use splitless mode chromatographic conditions to improve the sensitivity of the assay in 9.1.
This standard by the National Standardization Technical Committee on products and lubricant oil (SAC/TC280) proposed.
This standard by the National Petroleum Products and Lubricants Standardization Technical Committee of petroleum fuels and lubricants Technical Committee
(SAC/TC280/SC1) centralized.
This standard was drafted. China Petroleum & Chemical Corporation Research Institute of Petroleum.
The main drafters of this standard. Li Zhangxiu.
FAME Determination of free glycerol content
Gas chromatography
Warning. The application of this standard may involve some hazardous materials, operations and equipment, but not all security related thereto ask
Questions are suggestions. Users Before using this standard has the responsibility to develop appropriate safety and health practices and determine the limits of the relevant rules applicable
Versatility.
1 Scope
1.1 standard by gas chromatography fatty acid methyl esters (FAME) content in the range of 0.005% to 0.07% of the
Free glycerol content approach.
1.2 This standard applies to evaluate the quality of pure form of biodiesel fatty acid methyl esters. Glycerol as the transesterification reaction by-product, the concentration will
Affect the performance of the fuel.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 4756 petroleum liquids hand sampling method (GB/T 4756-1998, eqvISO 3170. 1988)
GB/T 15687 animal and plant oils prepared sample (GB/T 15687-2008, ISO 661.2003, IDT)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Free glycerol content freeglycerolcontent
Animal and vegetable fats by transesterification reaction and phase separation of glycerin fatty acid methyl ester remaining in a small amount of glycerol.
4. Summary
Ethanol, water and n-hexane and a quantity of an internal standard is added to a known amount of the sample, forming the mixture into two phases. Quantification of free glycerol
The solution was transferred to the lower layer. Determination of the lower solution by gas chromatography to quantitatively determine the amount of free glycerol.
5 Reagents and materials
If not otherwise stated, all reagents were of analytical grade.
5.1 n-hexane.
5.2 1,4-Butylene glycol. not less than 99% purity.
5.3 Ethanol. purity of not less than 95%.
5.4 formic acid. purity of not less than 99%.
...
