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Determination of organotin content in coatings -- Gas chromatography/mass spectrometry method
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Basic data
| Standard ID | GB/T 34706-2017 (GB/T34706-2017) |
| Description (Translated English) | Determination of organotin content in coatings -- Gas chromatography/mass spectrometry method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G50 |
| Classification of International Standard | 87.040 |
| Word Count Estimation | 10,134 |
| Date of Issue | 2017-11-01 |
| Date of Implementation | 2018-05-01 |
| 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 34706-2017: Determination of organotin content in coatings -- Gas chromatography/mass spectrometry method
---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 organotins content in coatings-Gas chromatography/mass spectrometry method
ICS 87.040
G50
National Standards of People's Republic of China
Determination of organic tin content in paints
GC/MS
Posted.2017-11-01
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard proposed by the China Petroleum and Chemical Industry Federation.
This standard by the National Coatings and Pigments Standardization Technical Committee (SAC/TC5) centralized.
This standard was drafted. CNOOC Changzhou Paint Chemical Research Institute Co., Ltd., Guangzhou Qingtian Materials Technology Co., Ltd., Guangzhou, synthetic materials
Materials Research Institute Co., Ltd., Guangdong Cody New Materials Technology Co., Ltd., Hezhong (Foshan) Chemical Co., Ltd., China Lacquer (Shenzhen) Co., Ltd.
Division, Quality Supervision, Inspection and Research Institute of Heilongjiang Province, Zhejiang Flying Whale New Material Technology Co., Ltd., Fujian Institute of product quality inspection, wide
East to Nano Technology Co., Ltd. can.
The main drafters of this standard. Li Jinying, Chen Xiaobo, Zhang Jie, Tan Hongyang, Li Donggang, Sun Lide, Lu Ming, Yao Dongsheng, Xu Junqiang, Wang Zhi,
Yan Chaoming, Wei Linlin, Xiaoqiao Bing, Zhu Yu.
Determination of organic tin content in paints
GC/MS
1 Scope
This standard specifies the principle of GC-MS determination of organic tin content and soluble organic tin content, reagents, equipment
And materials, samples, test procedures, test data processing, detection limits and precision.
This standard applies to the determination of organic tin content in coatings, including but not limited to the cited organic tin, such as monomethyltin (MeT), dipropyl
(DProT), monobutyltin (MBT), dibutyltin (DBT), tributyltin (TBT), tetrabutyltin (TeBT), octyltin
(MOT), dioctyltin (DOT), diphenyltin (DPHT), triphenyltin (TPHT) and the like. Determination of organic tin content in coatings raw materials
Can refer to this standard.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3186 Paints, varnishes and varnish and varnish raw materials sampling
Laboratory use specifications and test methods for analysis GB/T 6682-2008
GB/T 12808 laboratory glassware single standard pipette
3 principle
3.1 Determination of organic tin content in the coating principle
With ethyl acetate and other solvents as the extraction solvent, ultrasonic extraction of organotin in the sample. In the extract, add acetic acid - sodium acetate buffer
Solution, sodium tetraethyl borate as a derivatization reagent, the organic tin in the extract was derivatized with n-hexane extraction of the organic extract
Tin derivatives were detected by gas chromatography-mass spectrometry (GC/MS).
3.2 Determination of soluble organic tin coating principle
The sample is made into a coating film according to the product regulations, and the soluble organotin in the coating film is extracted with 0.07mol/L hydrochloric acid solution. In the extract,
Acetic acid - sodium acetate buffer solution was added to the sodium tetraethylborate as a derivatization reagent, the organic tin in the extract was derivatized with n-hexane
The organotin derivatives were extracted from the extract and detected by gas chromatography-mass spectrometry (GC/MS).
4 reagent
Caution --- Sodium tetraethyl borate is flammable. For the safe operation of sodium tetraethyl borate, please refer to the relevant chemical safety manual or supplier
Safety warning instructions.
Unless otherwise specified, only the reagents identified as analytical grade and above are used in the analysis and the requirements of GB/T 6682-2008
A level of water.
4.1 Sodium tetraethyl borate (NaBEt4) content ≥ 98% (mass fraction).
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