SN/T 1792-2014 English PDFUS$419.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 1792-2014: Determination of polychlorinated biphenyls in electrical insulating oil. Gas chromatography Status: Valid SN/T 1792: Historical versions
Basic dataStandard ID: SN/T 1792-2014 (SN/T1792-2014)Description (Translated English): Determination of polychlorinated biphenyls in electrical insulating oil. Gas chromatography Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: E38 Classification of International Standard: 29.040.10 Word Count Estimation: 16,110 Older Standard (superseded by this standard): SN/T 1792-2006 Quoted Standard: ASTM D923 Regulation (derived from): AQSIQ notification issued in 2014 on the first batch of 230 industry-standard entry-exit inspection and quarantine Issuing agency(ies): General Administration of Customs Summary: This Standard specifies the gas chromatographic methods for electrical insulating oil of polychlorinated biphenyls (PCBs) content. This Standard applies to the determination by a single Aroclor mixture or Aroclors electrical insulating oil contamination o SN/T 1792-2014: Determination of polychlorinated biphenyls in electrical insulating oil. Gas chromatography---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. (PCBs in electrical insulating oil content - Determination - Gas Chromatography) People's Republic of China Entry-Exit Inspection and Quarantine Standards Instead of the SN/T 1792-2006 Determination of PCBs in electrical insulating oil content Gas chromatography Issued on. 2014-01-13 2014-08-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. Instead of the standard SN/T 1792-2006 "electrical insulating oil PCB content by gas chromatography." This standard compared with SN/T 1792-2006 The main changes are as follows. --- The content and sequence of the chapters have been rearranged; --- Remove the "Report", "Appendix D", "References." This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard is mainly drafted by. People's Republic of China Ningbo Exit Inspection and Quarantine. The main drafters of this standard. bud Wu, Lin Zhenxing, Yuan Lifeng, according to Kim Jin, Shuxiong Fei, Xu Shanhao, good leaf frieze. This standard previously issued as follows. --- SN/T 1792-2006. Determination of PCBs in electrical insulating oil content Gas chromatography1 ScopeThis standard specifies the gas chromatographic methods for electrical insulating oil of polychlorinated biphenyls (PCBs) content. This standard applies to the determination by a single Aroclor mixture Aroclors or contamination of PCBs in electrical insulating oil, but also for askarels electrical insulating oil mixture measurement of the PCB, but not for the determination of PCBs from other sources. Some of which contain halogen Hydrocarbons such electrical insulating oil may interfere with the determination of PCBs, and therefore in the absence of pretreatment can not be determined using this standard.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. ASTMD923 electrical insulating oil sampling test methods3 Method summarySample diluted with an appropriate solvent, the solution is pretreated to remove interfering substances, then take a small amount of sample through the column, electronic Capture detector (ECD) is detected. A known concentration of the sample under the peaks obtained and the same analysis of one or more conditions Peak Aroclors standard sample are compared to obtain quantitative results.4 Reagents and materialsUnless otherwise stated, use only reagents of analytical grade and above. 4.1 solvent. n-hexane, n-heptane, or 2,2,4-trimethyl pentane (isooctane), chromatography. 4.2 Concentrated sulfuric acid. AR. 4.3 p, p'-DDE [1,1'- two - (4-chlorophenyl) - ethane]. used to establish the relative retention time. 4.4 insulating oil, fresh and unused and does not contain PCB. Note. Viscosity 40 ℃, more than the production of oil is about 10mm2/s of mineral insulating oil for this. 4.5 Standard. Aroclors1242,1254 1260 and analysis solution, see Appendix A. 4.6 Adsorbent. for adsorbing polar electrophilic impurities. Note. Florisil (60 mesh/100 mesh) is suitable adsorbent. Activated before use, the required amount into a glass container closure foil was heated at 130 ℃ overnight. Florisil heated to a slightly higher temperature can absorb some of the PCB, Aroclor activation effect can be used to test the solution. 4.7 PCBs standard stock solution (1mg/mL). accurately weighed Aroclor standards, with a solvent (4.1), dubbed the concentration of approximately 1mg/mL solution. 4.8 standard solution PCBs. Polychlorinated biphenyls standard stock solution (4.7) further standard working solution, Aroclor diluted The final solution volume and mass were recorded as (WS, g) and (VS, mL). Note. If the standard solution for the determination of mineral oil, electric insulating oil sample should be used to dissolve the mineral oil formulated liquor PCBs and multi-standard stock solution PCBs standard working solution, that is to take 10g ~ 20g insulating oil (4.4) was dissolved in 1L solvent (4.1), make sure the standard solution and diluted sample for analysis With the same solvent to oil ratio, and the ratio between the two should not be less than 50.1. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 1792-2014_English be delivered?Answer: Upon your order, we will start to translate SN/T 1792-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of SN/T 1792-2014_English with my colleagues?Answer: Yes. 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