SN/T 2611-2010 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2611-2010	239	Add to Cart	3 days	Determination of free formaldehyde in woodworks of food contact materials. Gas chromatography	Obsolete

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Basic data

Standard ID: SN/T 2611-2010 (SN/T2611-2010)
Description (Translated English): Determination of free formaldehyde in woodworks of food contact materials. Gas chromatography
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X08
Classification of International Standard: 67.250
Word Count Estimation: 6,657
Date of Issue: 2010-05-27
Date of Implementation: 2010-12-01
Quoted Standard: GB/T 5009.69; GB/T 6682
Regulation (derived from): National Quality Inspection (2010) 290; industry standard filing Notice 2010 No. 10 (No. 130 overall)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the food contact materials wood products formaldehyde gas chromatography detection methods. This standard applies to food contact materials Determination of free formaldehyde in wood products.

SN/T 2611-2010: Determination of free formaldehyde in woodworks of food contact materials. Gas chromatography

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Determination of free formaldehyde in woodworks of food contact materials.Gas chromatography People's Republic of China Entry-Exit Inspection and Quarantine Standards Food contact materials Wood products - Determination of free formaldehyde Gas chromatography Issued on. 2010-05-27 2010-12-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Guangdong Entry Inspection and Quarantine Bureau, South China Agricultural University. The main drafters of this standard. Li right Sunliang Juan, Zhang Zhihui, the OSCE, Gan Lian. Food contact materials Wood products - Determination of free formaldehyde Gas chromatography

1 Scope

This standard specifies the food contact materials in wood products formaldehyde gas chromatography detection methods. This standard applies to the determination of food contact materials in wood products free formaldehyde.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 5009.69 analysis epoxy phenolic coating the inner wall of canned food hygiene standards Laboratory use specifications and test methods GB/T 6682 Analysis

3 Method summary

Formaldehyde under acidic conditions to react with 2,4-dinitrophenylhydrazine to form a stable 2,4-dinitrophenyl hydrazone, extracted by cyclohexane, electric distribution Sub capture detector (ECD) were measured by gas chromatography, external standard.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682 regulations. 4.1 Cyclohexane. HPLC grade. 4.2 of concentrated hydrochloric acid. 4.3 2,4-dinitrophenylhydrazine (2,4-Dinitrophenylhydrazine, CASN o.119-26-6, formula C6H6N4O4, referred DNPH). 4.4 2,4-dinitrophenylhydrazine (DNPH) solution. Weigh 0.1g (accurate to 0.01g) 2,4- dinitrophenylhydrazine (DNPH) was dissolved in 24mL Concentrated hydrochloric acid (4.2), add water volume to 100mL, spare stopper. 4.5 Formaldehyde standard solution (100mg/L). according to GB/T 5009.69 formulated and calibrated. 4.6 Formaldehyde standard solution (1.0μg/mL). precise lessons 1.00mL formaldehyde standard solution was placed in 100mL volumetric flask, dilute with water Explanation to the mark. This is equivalent to 1.0μg per ml of formaldehyde solution (when using the formulation).

5 Instruments

5.1 Gas chromatograph equipped with ECD detector. 5.2 Analytical balance, a sense of the amount of 0.01mg. 5.3 Vortex. 5.4 water bath. ......

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