SN/T 2257-2015 English PDF

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SN/T 2257-2015: Determination of perfluorooctanoic acid(PFOA) in polytetrafluoroethene materials and non-stick pan coatings--Gas chromatography-mass spectrometry
Status: Valid

SN/T 2257: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2257-2015	229	Add to Cart	3 days	Determination of perfluorooctanoic acid(PFOA) in polytetrafluoroethene materials and non-stick pan coatings--Gas chromatography-mass spectrometry	Valid
SN/T 2257-2009	319	Add to Cart	3 days	Determination of perfluorooctanoic acid(PEOA)in Teflon materials and sticky pan coatings. Gas chromotagraphy-mass spectrometry(GC-MS)method	Obsolete

Similar standards

GB/T 3654.3   GB/T 16597   GB/T 14265   SN/T 5682   SN/T 5683   SN/T 2259   

Basic data

Standard ID: SN/T 2257-2015 (SN/T2257-2015)
Description (Translated English): Determination of perfluorooctanoic acid(PFOA) in polytetrafluoroethene materials and non-stick pan coatings--Gas chromatography-mass spectrometry
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: H10
Classification of International Standard: 77.040
Word Count Estimation: 10,147
Date of Issue: 2015-12-04
Date of Implementation: 2016-07-01
Older Standard (superseded by this standard): SN/T 2257-2009
Regulation (derived from): AQSIQ Announcement 2015 No.4th batch 120 items of Industry Standards
Issuing agency(ies): General Administration of Customs

SN/T 2257-2009: Determination of perfluorooctanoic acid(PEOA)in Teflon materials and sticky pan coatings. Gas chromotagraphy-mass spectrometry(GC-MS)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 perfluorooctanoic acid (PEOA) in Teflon materials and sticky pan coatings.Gas chromotagraphy-mass spectrometry (GC-MS) method Exit inspection and quarantine industry standard book People's Republic of China Teflon non-stick coating materials and PFOA Gas chromatography - mass spectrometry Posted 2009-02-20 2009-09-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

The Standard Appendix A and Appendix B are informative. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau, Chinese Academy of Inspection and Quarantine, the People's Republic of China And country SZCIQ. The main drafters of this standard. Sun star, Jiang Haining, Zhou Yuyan, Chenzong Hong, Li Chen, birch, Zhihong. This standard is the first release of the entry-exit inspection and quarantine industry standards. Teflon non-stick coating materials and PFOA Gas chromatography - mass spectrometry Warning. Use of this person should be a standard laboratory qualifications and experience of time. This standard does not point out all possible security Wide issues. The user's responsibility to take appropriate safety and health protection measures.

1 Scope

This standard specifies the Teflon material (Teflon) and fluorine non-stick coating material perfluorooctanoic acid (PFOA) gas chromatography - mass spectroscopy Setting Method. This standard applies to raw materials and fluorine-containing fluorine-containing non-stick measuring caprylic (PFOA) content of perfluorinated coating. The low standard of PFOA detection limit of 0.01mg/kg. Principle 2 Fluorinated or non-stick coating material samples with methanol, water extraction, and the extract was evaporated under acid catalysis esterification with methanol by gas Chromatography - mass spectrometer for qualitative and quantitative analysis.

3 Reagents and materials

Unless otherwise specified, all reagents were of analytical grade, double distilled water or water of equivalent purity. 3.1 methanol. 3.2 hexane. chromatographically pure. 3.3 anhydrous sodium carbonate. 3.4 sodium hydroxide. 3.5 acetyl chloride (methylene sulfone). pure class distinctions. 3.6 methanol + water (1 + 1). Measure 100mL of methanol (3.1) was mixed with 100mL of water. 3.7 10% sodium carbonate solution. Weigh 10g of anhydrous sodium carbonate (AR) was dissolved in 90g of water dubbed. 3.8% sodium hydroxide solution. Weigh 5g of sodium hydroxide (analytical grade) was dissolved in 95g of water dubbed. 3.9 perfluorooctanoic acid (PFOA). purity > 99%. 3.10 perfluoro decanoic acid (PFDA). purity > 99%. 3.11 PFOA standard solution (50mg/L). Weigh accurately the right amount of PFOA standard substance (3.9) (accurate to 0.1mg), methanol (3.1) formulated as 50mg/L standard stock solution. Seal stored in refrigerator at 4 ℃, valid for two months. 3.12 PFDA stock standard solution (10mg/L). Weigh accurately the right amount of PFDA standard substance (3.10) (accurate to 0.1mg), with A Alcohol (3.1) formulated as 10mg/L standard stock solution. Seal stored in 4 ℃ refrigerator spare.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry (GC-MS), with EI source. 4.2 meter microwave extraction apparatus. Heating tube reactor with condensed 4.3 (derived tube) (see Appendix A). 4.4 ultrasound water bath.

5 Sample Preparation

For powdered Teflon material, by mixing the sample can be directly called. Membrane material should be cut into 5mm × 5mm small pieces, and mix the sample to be weighed. Fluorine ......

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