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