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SN/T 3338-2012: Determination of polycyclic aromatic hydrocarbons residues in textiles for import and export
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| SN/T 3338-2012 | English | 289 |
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Determination of polycyclic aromatic hydrocarbons residues in textiles for import and export
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SN/T 3338-2012
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Basic data | Standard ID | SN/T 3338-2012 (SN/T3338-2012) | | Description (Translated English) | Determination of polycyclic aromatic hydrocarbons residues in textiles for import and export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | W55 | | Classification of International Standard | 59.080.30 | | Word Count Estimation | 11,149 | | Regulation (derived from) | National Quality Inspection (2012) 777; industry standard filing Notice 2013 No. 4 (No. 160 overall) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard provides 18 kinds of PAHs in textiles by gas chromatography mass spectrometry. This standard applies to any form of textiles. | SN/T 3338-2012: Determination of polycyclic aromatic hydrocarbons residues in textiles for import and export
---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 polycyclic aromatic hydrocarbons residues in textiles for import and export
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Import and export of textiles polycyclic aromatic hydrocarbons Residues
Detection method
importandexport
Issued on. 2012-12-12
2013-07-01 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.
Please note that some of the content of this document may involve patents. Distribution of this document
Institutions do not assume the responsibility to identify these patents.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Zhejiang Exit Inspection and Quarantine, Jiaxing College.
Drafters of this standard. Shen Bing, Xiqi Hui, Li Lei, come Yan Fang, Zhu Hongmin, Ding Yun, Jiang Jianjun, Zhang.
Import and export of textiles polycyclic aromatic hydrocarbons Residues
Detection method
1 Scope
This standard specifies the textile 18 PAHs by gas chromatography - mass spectrometry.
This standard applies to any kind of textiles.
2 Method summary
Hexane as the extraction solvent, a sample of the target compound was extracted with ultrasonic wave concentrated constant volume by gas chromatography - mass spectrometry
(GC/MSD) were measured, quantified by external standard.
3 Reagents and materials
3.1 hexane. AR.
3.2 PAHs standards. purity not less than 97.5%, see Table A.1.
3.3 standard stock solution. accurately weighed amount of PAHs standard (3.2) with n-hexane dissolved constant volume, were prepared at a concentration of about
1000mg/L of standard stock solution.
NOTE. The standard stock solution should be in the 0 ℃ ~ 4 ℃ refrigerator, valid for six months.
3.4 mixed standard working solution. If necessary, diluted to the appropriate concentration of mixed standard working with n-hexane (3.1) standard stock solution (3.3)
As a solution.
NOTE. The standard working solution should be in the 0 ℃ ~ 4 ℃ refrigerator, valid for three months.
4 instruments and equipment
4.1 Gas chromatography/mass spectrometry (GC-MS).
4.2 stoppered test tube. about 50mL.
4.3 Analysis of balance. a sense of the amount of 0.1mg and 0.01g each one.
4.4 ultrasonic bath. the frequency of 50kHz.
4.5 rotary vacuum concentrator.
5 measuring step
5.1 Extraction
The sample was cut to 5mm × 5mm or less, after mixing weighed 2g (accurate to 0.01g) sample in a stoppered test tube (4.2), and
20mL hexane (3.1), using an ultrasonic bath (4.4) ultrasonic extraction 30min, the upper extract decanted, and the residue after extraction was repeated once, together
And extract. The extract was concentrated using a vacuum rotary instrument (4.5) at 50 ℃ ± 2 ℃, 380mbar ± 20mbar concentrated to about 5mL, quantitative transfer
Move 10mL volumetric flask, constant volume with n-hexane for GC-MS (4.1) measured.
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