GB/T 23813-2009 English PDF

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GB/T 23813-2009: Determination of 1, 2-propanediol in foods
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23813-2009	479	Add to Cart	3 days	Determination of 1, 2-propanediol in foods	Obsolete

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Basic data

Standard ID: GB/T 23813-2009 (GB/T23813-2009)
Description (Translated English): Determination of 1, 2-propanediol in foods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X40
Classification of International Standard: 67.220.20
Word Count Estimation: 12,122
Date of Issue: 2009-05-27
Date of Implementation: 2009-09-01
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
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 gas chromatography and gas chromatography-propanediol content-mass spectrometry in food 1, 2. This standard applies to foods 1, 2-propanediol. This standard method detection limit of 0. 01 g/kg.

GB/T 23813-2009: Determination of 1, 2-propanediol in foods

---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.
Determination of 1, 2-propanediol in foods ICS 67.220.20 X40 National Standards of People's Republic of China Determination of 1,2-propanediol in food Posted 2009-05-27 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard and Appendix B is an informative annex. This standard is proposed and managed by China National Institute of Standardization. This standard was drafted. the National Food Quality Supervision, Inspection and Safety Center. The main drafters of this standard. Zhao Yuqi, Juan periphery, often Yuwen, Li Wei, fields, Xie Jing Jing. Determination of 1,2-propanediol in food

1 Scope

This standard specifies by gas chromatography and gas chromatography - mass spectrometry method for the determination of 1,2-propanediol content of food. This standard applies to the determination of 1,2-propanediol in food. The standard method detection limit of 0.01g/kg. The first gas chromatography method Principle 2 Food 1,2-propanediol with ethanol extraction and the extract was filtered, retention time qualitative gas chromatography, external standard.

3 Reagents

Unless otherwise indicated, the reagents used in the analysis were of analytical grade. 3.1 ethanol. 3.2 sea sand. pure chemistry, particle size 0.65mm ~ 0.85mm. 3.3 1,2-propanediol standard sample. purity ≥99.9%. 3.4 1,2-propanediol standard stock solution. Weigh accurately 1,2-propanediol standard sample 1g (accurate to 0.0001g), was dissolved in ethanol And transferred to 100mL volumetric flask to the mark, and this solution per ml of 1,2-propanediol 10mg. Stored in a refrigerator at 4 ℃, effective 3 months. 3.5 1,2-propanediol standard solution. 1,2-propanediol, respectively Imbibe stock standard solution (10mg/mL) 0.0mL, 0.1mL, 0.2mL, 1.0mL, 2.0mL, 5.0mL to six 100mL volumetric flask, anhydrous ethanol to the mark, to give a concentration of 0.0μg/1,2- propanediol standard mL, 10.0μg/mL, 20.0μg/mL, 100.0μg/mL, 200.0μg/mL, 500.0μg/mL of Series solution. Using now.

4 Instrument

4.1 Gas Chromatograph (GC). equipped with a flame ionization detector (FID). 4.2 Analysis of balance. a sense of volume and 0.01g 0.0001g. 4.3 mill. 4.4 vortex mixer. 4.5 cyclotron oscillator. 4.6 centrifuge. speed ≥4000r/min. Step 5 Analysis 5.1 Extraction and purification 5.1.1 cakes, puffed food, cream, cheese, soy and other Sample pulverized with a grinder. Accurately weighed sample mix 5g (accurate to 0.01g), ethanol was added 50.00mL, Vortex After shaking extraction 2min 40min, 1h after the standing was filtered using qualitative filter paper, the resulting filtrate was analyzed by gas chromatography. 5.1.2 raw wet noodle products Sample pulverized with a grinder. Accurately weighed sample mix 2g (accurate to 0.01g) in a mortar, add the amount of sea sand (sea sand and the sample ......

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