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GB/T 33043-2016: Standard test method for determining formaldehyde concentrations in air and emission rates from wood products using a large chamber
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33043-2016 | English | 239 |
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Standard test method for determining formaldehyde concentrations in air and emission rates from wood products using a large chamber
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GB/T 33043-2016
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Basic data | Standard ID | GB/T 33043-2016 (GB/T33043-2016) | | Description (Translated English) | Standard test method for determining formaldehyde concentrations in air and emission rates from wood products using a large chamber | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B70 | | Classification of International Standard | 79.060.01 | | Word Count Estimation | 12,166 | | Date of Issue | 2016-10-13 | | Date of Implementation | 2017-05-01 | | Regulation (derived from) | National Standard Announcement 2016 No.17 | | 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 | GB/T 33043-2016: Standard test method for determining formaldehyde concentrations in air and emission rates from wood products using a large chamber
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Standard test method for determining formaldehyde concentrations in air and emission rates from wood products using a large chamber
ICS 79.060.01
B70
National Standards of People's Republic of China
Determination of formaldehyde emission from wood - based panel
2016-10-13 released
2017-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
Principle 1
Equipment and equipment
6 reagents and solution preparation 2
7 specimen 2
8 Transportation of test materials and pretreatment of specimen 3
9 Step 3
10 Calculate 4
11 Test Report 4
12 detection limit, interference factor, repeatability and reproducibility 5
Appendix A (normative) formaldehyde standard solutions A and B 6
Appendix B (normative) Standard curve 7
Appendix C (normative appendix) formaldehyde temperature correction factor 8
Appendix D (normative) formaldehyde relative humidity correction coefficient 9
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the State Forestry Administration.
This standard is nationalized by the National Standardization Technical Board for Wood-based Panel (SAC/TC198).
The drafting unit of this standard. China Forestry Science Research Institute of Wood Industry Research Institute, the State Furniture and Indoor Environmental Quality Supervision and Inspection Center,
Dongguan Inspection Products Inspection Co., Ltd., Shenzhen City Building Science Research Institute Co., Ltd., Fujian Province, wood carving classical furniture product quality supervision
Inspection Center, Deqing County Yunfeng Central good Technology Co., Ltd., Zhejiang sublimation Yunfeng New Material Co., Ltd., Guangdong Yiu Donghua furniture sheet
Limited company, Zhejiang Liangyou Wood Industry Co., Ltd., Baroque Wood (Zhongshan) Co., Ltd.
The main drafters of this standard. Yang Fan, Jia Dongyu, Sun Lihua, Fan Rumei, Chen Fengna, Yang Xiaojun, Li Bolao, Zhao Yongxuan, Gu Shuixiang, Zeng Minhua,
Ge Xiaohai, Liu Shuozhen.
Determination of formaldehyde emission from wood - based panel
1 Scope
This standard specifies the method for the determination of formaldehyde emission from wood-based panels in large-scale climate chamber methods.
This standard applies to the determination of formaldehyde emission from wood-based panels.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Preparation of standard titration solution for GB/T 601 chemical reagents
GB/T 6682 Analytical laboratory water specifications and test methods
LAY/T 1982 Large chamber for the determination of formaldehyde emission in wood-based panels and their products
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Air replacement rate airchangerate
The ratio of the air volume per unit time through the climate chamber to the volume of the climate chamber is usually expressed in terms of the number of air exchanged per hour (h-1).
3.2
Rate of emission
The amount of formaldehyde released per unit area in unit time is expressed in mg/(m2 · h).
3.3
Load capacity
The ratio of the total area exposed to the surface of the specimen is expressed in m2/m3.
4 principle
In the temperature, relative humidity, air flow rate and air replacement rate control in a certain value of the climate box (volume of the smallest 22m3), placed
Know the surface area of the sample, regular extraction of formaldehyde and air mixture in the box. The extracted gas is passed through an absorption bottle containing an absorbent liquid. Use change
Chromic acid method or other equivalent method to determine the formaldehyde content of the absorption solution.
5 equipment and equipment
5.1 Technical specifications of the test box shall meet the requirements of LY/T 1982. When the test box is running, the concentration of formaldehyde in the box should be uniform. In the box
Body floor and roof 0.3m and 1.3m ~ 1.5m between the length of the box from the ends of the 1/3, the width of the midpoint of the direction, take at least
Six points detection, formaldehyde concentration difference of not more than 0.04mg/m3. Set at least two gas sampling ports, equidistantly set in the direction along the air flow
1.3m ~ 1.5m, and at least 0.6m from the inner wall. The sample tube is made of non-adsorbed formaldehyde. Such as stainless steel, aluminum and polytetrafluoroethylene
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