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GB/T 35862-2018: Surface active agents -- Determination of volatile organic compounds residues -- Headspace gas chromatography-mass spectrometry (GC-MS) Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 35862-2018: Surface active agents -- Determination of volatile organic compounds residues -- Headspace gas chromatography-mass spectrometry (GC-MS)---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT35862-2018 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.100.40 G 72 Surface active agents - Determination of volatile organic compounds residues - Headspace gas chromatography-mass spectrometry (GC-MS) Issued on: FEBRUARY 06, 2018 Implemented on: SEPTEMBER 01, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 Principle ... 4 5 Reagents ... 5 6 Apparatus ... 5 7 Preparation of standard solution ... 6 8 Sample preparation ... 6 9 Procedures ... 7 10 Result expression ... 7 11 Precision ... 8 12 Detection limit ... 8 13 Test report ... 8ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard was proposed by China Petroleum and Chemical Industry Federation. This Standard shall be under the jurisdiction of Subcommittee on (Special) Surfactant of National Technical Committee on Chemicals of Standardization Administration of China (SAC/TC 63/SC 8). The drafting organizations of this Standard. Shanghai Tianxiang Quality Technology Service Co., Ltd., Zhejiang Real Madrid Technology Co., Ltd. Main drafters of this Standard. Ning Qiaoyu, Ling Lijun, Xie Xueqin, Zhang Jingjie, Huang Sheng, Tang Fuwei, Xia Yichu. Surface active agents - Determination of volatile organic compounds residues - Headspace gas chromatography-mass spectrometry (GC-MS)1 ScopeThis Standard specifies the method for determining the volatile residues of organic compounds in surfactants by headspace gas chromatography-mass spectrometry. This Standard is applicable to various surfactants.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 13173, Surface active agents - Detergents - Testing methods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. 3.1 volatile organic compounds; VOCs any organic compound having an initial boiling point lower than or equal to 250°C at a standard pressure of 101.3 kPa4 PrincipleThe testing sample is placed in a headspace bottle and sealed. After heating in the headspace sampler for a certain period of time, the volatile components in the sample are directly introduced into the gas chromatograph for separation and detection. Calculate the concentration of organic compounds with a boiling point below 250°C by using the response coefficient of toluene. 8.3 Preparation of standard curve Prepare 6 headspace bottles. Add 1.00 mL of standard solution A, B, C, D, E to each of the 5 headspace bottles. Add 1.00 mL of marker working solution to the other headspace bottle. Add 1 mL of water separately. Immediately cover and seal. The toluene contents shall be 0.1 μg, 0.5 μg, 2.0 μg, 10 μg, and 20 μg, respectively.9 Procedures9.1 Testing conditions The testing conditions shall meet the following requirements. - Inlet temperature. 230°C; - Carrier gas. helium, flow rate at 1 mL/min; - Column temperature. temperature programmed, held at 50°C for 2 min, raised to 100°C at 12°C/min, then raised to 230°C at 35°C/min; - Detector. MSD; - Ionization mode. electron bombardment ionization (EI), ionization energy 70 eV; - Scan mode. full scan; - Headspace parameters. 80°C, balance for 40min, injection time is 1min, injection volume is 1mL. 9.2 Testing Prepare samples and standard curves as described in 8.2, 8.3. Put the headspace vial into the headspace sampler. Analyze according to the chromatographic conditions given in 9.1. Scan to obtain a chromatogram and record the peak area of the compound peaking before the marker.10 Result expression10.1 Calculate the content of volatile organic compounds (i) peaking in the sample before the marker according to formula (1). ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 35862-2018 be delivered?Answer: The full copy PDF of English version of GB/T 35862-2018 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 35862-2018_English with my colleagues?Answer: Yes. 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