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GB/T 23974-2009 English PDFUS$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 23974-2009: Determination of the content of ortho-phenylphenol in dye products Status: Valid
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GB/T 23974-2009: Determination of the content of ortho-phenylphenol in dye products---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 the content of ortho-phenylphenol in dye products ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Determination phenylphenol dye products o Posted 2009-06-02 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordAppendix A of this standard is a normative appendix, Appendix B is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized. This standard was drafted. Shenyang Chemical Research Institute, the National Quality Supervision and Inspection Center dye. The main drafters of this standard. Ji-ho, Shen Jiong day. Determination phenylphenol dye products o Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis standard specifies the method for determination of dye products of o-phenylphenol. This standard applies to gas chromatography - mass spectrometry (GC-MS) of commercial dyes, dye products, dye intermediates and textile dyeing and finishing auxiliaries Determination of o-phenylphenol.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) GB/T 8170-2008 revised value represents about rules and limit values \u200b\u200band judgment Principle 3 Samples were extracted with hexane extraction, after the extract volume by gas chromatography - mass selective detector (GC-MSD) was subjected to extraction Determination of characteristic ions external standard.4 Determination4.1 General provisions Unless otherwise specified, use only recognized as analytical reagents and GB/T 6682-2008 specified in the third grade water. Test results judgment Given in GB/T 8170-2008 4.3.3 Rounding the value comparison method. 4.2 Reagents and materials a) n-hexane; b) o-phenylphenol standard. Purity ≥98% (mass fraction); c) standard stock solution. weigh the amount of o-phenylphenol standards, with n-hexane dissolved and formulated to about 10mg/mL standard stock Solution; d) standard solution. A stock solution required an appropriate concentration of the standard working solution with n-hexane diluted standards. NOTE. The standard stock solution was sealed and stored at 0 ℃ ~ 4 ℃ refrigerator, valid for 2 years; standard working solution was sealed and stored at 0 ℃ ~ 4 ℃ refrigerator, there Valid for six months. 4.3 Instrument a) Gas chromatograph. with a mass selective detector (MSD); b) ultrasonic generator. Operating frequency 40kHz; c) micro-syringe. 10μL; d) extractor. made of hard glass tube, with ground joint and stopper, 50mL; e) 0.45μm PTFE membrane filter head; f) grinding mouth stoppered centrifuge tube. 10mL; g) Centrifuge. 4000r/min. ...... |