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GB/T 24313-2009 English PDF

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GB/T 24313-2009: Determination of olefin in beeswax -- Gas chromatographic mass spectrum method
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GB/T 24313-2009English229 Add to Cart 3 days [Need to translate] Determination of olefin in beeswax -- Gas chromatographic mass spectrum method Valid GB/T 24313-2009

PDF similar to GB/T 24313-2009


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Basic data

Standard ID GB/T 24313-2009 (GB/T24313-2009)
Description (Translated English) Determination of olefin in beeswax -- Gas chromatographic mass spectrum method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B47
Classification of International Standard 65.140
Word Count Estimation 10,171
Date of Issue 2009-09-30
Date of Implementation 2009-12-01
Regulation (derived from) National Standard Approval Announcement 2009 No.10 (Total No.150)
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 beeswax paraffin hydrocarbons by gas chromatography-mass spectrometry (GC-MS) determination. This standard applies to the Chinese honeybee (Apis cerana) beeswax, measured in paraffin wax M-Ir substances Italian bees (Apis mellifera ligustica). This standard limit on discrimination in paraffin wax hydrocarbons is 10%.

GB/T 24313-2009: Determination of olefin in beeswax -- Gas chromatographic mass spectrum method

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Determination of olefin in beeswax. Gas chromatographic-Mass spectrum method ICS 65.140 B47 National Standards of People's Republic of China Determination of the paraffin wax Gas chromatography - mass spectrometry Posted 2009-09-30 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The Standard Appendix A, Appendix B, Appendix C and Appendix D is an informative annex. The standard proposed by China Federation of Supply and Marketing Cooperatives. This standard is under the jurisdiction of the national bee standardization working group. This standard was drafted. Chinese Academy of Agricultural Sciences Institute of bees, bee Ministry of Agriculture Quality Supervision and Testing Center (Beijing). The main drafters of this standard. Chen Fang, Zhao Jing, Chen Lanzhen, Xue Xiaofeng, Li Yi, Wu Liming, Zhou Jinhui, Zhang Jinzhen, Wang Peng, Huang Jingping. Determination of the paraffin wax Gas chromatography - mass spectrometry

1 Scope

This standard specifies the beeswax paraffin hydrocarbons by gas chromatography - mass spectrometry (GC-MS) spectrometry. The standard for determining limits beeswax paraffin hydrocarbons is 10%.

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 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions (GB/T 6379.1-2004, ISO 5725-1.1994, IDT) GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) Principle 3 Sample with petroleum ether extraction, gas chromatography - mass spectrometer, with internal standard, determined using statistical methods.

4 Reagents and materials

4.1 petroleum ether. AR. 4.2 squalane. standards, purity > 99%. 4.3 Beeswax. Take China superfluous spleen bees wax, beeswax in a ratio of 1000mL of water 100g of boiling water, coarse filtration to remove gross impurities, After cooling blade cut the bottom of the impurities, purifying repeat once. Italy 4.4 Beeswax. Take Italian bees wax superfluous spleen, prepared the same way as 4.3. 4.5 Paraffin. Commercially pure paraffin. 4.6 Preparation of standard beeswax add different proportions of wax. beeswax and paraffin mass ratio of 1.9; 2.8; 3.7; 4.6; 5.5; 6.4; 7/3; 8.2 and 9.1 individually weighed desired paraffin (4.5) and beeswax (4.3, 4.4) standard of 18 parts, each sample 1000mL proportion of water 100g of boiling water beeswax, beeswax and paraffin to make fully melted and stir well, remove the air-dried after cooling. The sample obtained The proportion of wax is added 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%. 4.7 iso-paraffins thirty working standard solution (1000mg/L). Weigh accurately 50.0mg iso-paraffins thirty standard (4.2) in 50mL capacity Bottle with petroleum ether was dissolved and set the volume. -18 ℃ refrigerator.

5 Instruments

5.1 GC - MS. 5.2 Analysis of balance. a sense of the amount of 0.1g and 0.0001g. 5.3 sonicator.

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