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SN/T 2086-2008: Determination of the formaldehyde in wooden toys. High performance liquid chromatography method
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Determination of the formaldehyde in wooden toys. High performance liquid chromatography method
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SN/T 2086-2008
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Basic data | Standard ID | SN/T 2086-2008 (SN/T2086-2008) | | Description (Translated English) | Determination of the formaldehyde in wooden toys. High performance liquid chromatography method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | Y57 | | Word Count Estimation | 8,862 | | Date of Issue | 2008-04-29 | | Date of Implementation | 2008-11-01 | | Quoted Standard | GB/T 2912.1-1998; GB/T 6682 | | Regulation (derived from) | Industry standard filing Notice 2008 No. 7 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the determination of formaldehyde in wooden toys high performance liquid chromatography. This standard applies to all kinds of solid wood and artificial by the toys made of sheet metal and other formaldehyde content. | SN/T 2086-2008: Determination of the formaldehyde in wooden toys. High performance liquid chromatography method
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Determination of the formaldehyde in wooden toys.High performance liquid chromatography method
Exit inspection and quarantine industry standard book People's Republic of China
Determination of formaldehyde content in wooden toys
High Performance Liquid Chromatography
Posted 2008-04-29
2008-11-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Guangdong CIQ.
The main drafters of this standard. Huang Li Na, Ouyang Lun, Yang Chen, Li Bingzhong, Liuchong Hua, ants Le Chau, Zhong Zhiguang.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Determination of formaldehyde content in wooden toys
High Performance Liquid Chromatography
1 Scope
This standard specifies the wooden toys formaldehyde content determined by HPLC.
This standard applies to the determination of various toys made of solid wood and formaldehyde content and other man-made sheet steel.
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 agreement in accordance with the standard parties RESEARCH
Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
2912.1-1998 Textiles - Determination of formaldehyde GB/T Part 1. Free and hydrolyzed formaldehyde (water extraction method) (eqv
ISO /FDIS14184-1.1997)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987)
Principle 3
Extraction of water samples in formaldehyde, formaldehyde extract with 2,4-dinitrophenylhydrazine (2,4-Dinitrophenylhydrazine, DNPH)
Derivatization process in weak acid buffer solution, the direct determination of the formaldehyde content by HPLC.
4 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682 under the two water.
4.1 acetic acid.
4.2 sodium acetate.
4.3 2,4-dinitrophenylhydrazine (DNPH). 50% aqueous solution.
4.4 acetonitrile. chromatography.
4.5 5mol/L acetic acid. Take 28.5mL acetic acid (4.1), constant volume of water to 100mL.
4.6 5mol/L sodium acetate solution. Weigh 41.0g of sodium acetate (4.2), constant volume of water to 100mL.
4.7 acetate buffer (pH5.0). Take 40.0mL5mol/L acetic acid (4.5), 60.0mL5mol/L sodium acetate solution (4.6), mixed
Together evenly. Adjusted to pH5.0 ± 0.1 with 6mol/L sodium hydroxide or 6mol/L hydrochloric acid, if necessary.
4.8 2,4-dinitrophenylhydrazine (DNPH) solution (3mg/mL). said 600mgDNPH (50%) in 100mL flask with acetonitrile
To the mark. Cold dark, valid for two weeks.
4.9 formaldehyde standard. standard solution (12mg/mL or so) or formaldehyde stock solution according to GB/T 2912.1-1998 Appendix A calibration method
After diluted with pure water to a concentration of 12mg/mL or so stored.
4.10 120μg/mL concentration of formaldehyde standard solution. Take formaldehyde standard solution (4.9) diluted 100 times to give 120μg/mL or so
Formaldehyde standard solution.
4.11 5μg/mL concentration of formaldehyde standard solution. Take 1mL120μg/mL formaldehyde standard solution (4.10) diluted 25-fold to give 5μg/mL
About formaldehyde standard solution.
5. Apparatus
5.1 High performance liquid chromatograph. with diode array detector (DAD) or UV - visible detector (UV-VIS).
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