GB/T 36929-2018 in English
VALIDLeather and fur-Chemical tests-Determination of perfluorooctane sulphonates(PFOS) and perfluorooctanoic acid(PFOA) content
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
《GB/T 36929-2018皮革和毛皮 化学试验 全氟辛烷磺酰基化合物（PFOS）和全氟辛酸类物质（PFOA）的测定》由TC252（全国皮革工业标准化技术委员会）归口，主管部门为中国轻工业联合会。
Introduction
1. Standard Overview
GB/T 36929—2018 is a national standard of the People's Republic of China, which specifically stipulates the liquid chromatography-tandem mass spectrometry method for the determination of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) extractable from leather and fur.
2. Background of Standard Drafting
This standard was proposed by the China Light Industry Federation and managed by the National Technical Committee for Standardization of Leather Industry. The drafting units include Zhejiang Fangyuan Testing Group Co., Ltd., National Leather Quality Supervision and Inspection Center (Zhejiang) and other authoritative institutions.
3. Principle of the Method
PFOS and PFOA in the sample were extracted using a Soxhlet extraction device using methanol as the solvent. After the extract was purified by a solid phase extraction column, it was determined using a liquid chromatography-tandem mass spectrometer (LC-MS/MS), and selected ion confirmation and external standard method were used for quantification.
| Steps | Detailed description |
|---|---|
| Extraction | Accurately weigh the sample and use methanol for Soxhlet extraction. |
| Purification | Remove impurities through a solid phase extraction column, collect the eluate and concentrate it to a fixed volume. |
| Determination | Use LC-MS/MS to analyze the sample and draw a standard curve to determine the content. |
4. Key technical requirements
Instruments and reagents:Analytical balance, liquid chromatography-tandem mass spectrometer (LC-MS/MS), methanol, acetonitrile, etc.
Extraction conditions:Methanol as solvent, temperature 85℃, extraction time 30 minutes.
5. Experimental steps
5.1 Sampling method
- Leather samples were sampled according to QB/T 2706.
- Fur samples were sampled according to QB/T 1267 to ensure that the fur was intact.
5.2 Sample preparation
Leather and fur samples were prepared according to QB/T 2716 and QB/T 1272, respectively.
6. Data analysis and result calculation
Calculate the PFOS and PFOA content in the sample according to the standard curve and formula. The result is rounded to one decimal place in milligrams per kilogram (mg/kg).
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 6440-2012 in English
Raw goat skin
2012-12-31 -
GB/T 39370-2020 in English
Leather—Physical and mechanical tests—Determination of surface reflectance
2020-11-19
