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GB/T 28769-2012 English PDF

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US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 28769-2012: Test method for determination of free glycerol content in Fatty Acid Methyl Esters (FAME) by gas chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28769-2012	209	Add to Cart	3 days	Test method for determination of free glycerol content in Fatty Acid Methyl Esters (FAME) by gas chromatography	Valid

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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: 9,931
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%. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 28769-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 28769-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 28769-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 28769-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.