GB/T 4946-2008 English PDFUS$599.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4946-2008: Terms of gas chromatography Status: Valid GB/T 4946: Historical versions
Basic dataStandard ID: GB/T 4946-2008 (GB/T4946-2008)Description (Translated English): Terms of gas chromatography Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G04 Classification of International Standard: 01.040.71; 71.040 Word Count Estimation: 26,213 Date of Issue: 2008-06-18 Date of Implementation: 2009-02-01 Older Standard (superseded by this standard): GB/T 4946-1985 Regulation (derived from): National Standard Approval Announcement 2008 No.10 (Total No.123) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the general term gas chromatography, instruments, fixed and mobile phases, chromatographic parameters, chromatograms and other, symbols. This standard applies to gas chromatography. GB/T 4946-2008: Terms of 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.Terms of gas chromatography ICS 01.040.71; 71.040 G04 National Standards of People's Republic of China Replacing GB/T 4946-1985 Gas Chromatography term Posted 2008-06-18 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard replaces GB/T 4946-1985 "Gas Chromatography term." The previous version of Standard GB/T 4946-1985 main technical differences are as follows. --- 2.1 Gas Chromatography method to increase the interpretation of "It uses material phase difference between the stationary phase partition coefficient in the flow, when When the two-phase relative movement of the tested sample components between the two phases of repeated allocation, with the mobile phase (gas) to be moving Distance, the last component of the sample to obtain separation and determination. "; --- Increased 2.4 filler gas chromatography; --- Increasing the 3.1.4.1 section two-dimensional gas chromatograph (GC + GC); --- Increased 3.1.4.2 comprehensive two-dimensional gas chromatography (GC × GC); --- 3.1.6 adds reaction gas chromatograph; --- 3.1.7 increased gas chromatography - mass spectrometry (GC-MS); --- Increased 3.1.8 GC - FTIR spectrometer (GC-FTIR); --- Increased 3.5.2.1.4 office wall hollow column; --- Increased 3.5.2.3 chemically bonded hollow column; --- Increased 3.5.2.4 chemical crosslinking hollow column; --- 3.5.3 increased film thickness; --- 3.5.4 adds coated efficiency; --- 3.5.7 increased column lifetime; --- Increased 3.6.4.5.1 pulsed flame photometric detector (PFPD); --- Increased 3.6.4.7 atomic emission detector (AED); --- Increased 3.6.4.8 MS detector (MSD); --- Increased 3.6.4.9 Fourier transform infrared spectroscopy; --- The microprocessor 2.9 to 3.9 data processing system; --- Correction factor will be 4.15 to 5.15 to the definition. Area, said correction factor expression is. --- 5.15.1 increased relative (quantitative) correction factor; --- Increased 6.13 percentage peak area method; --- Will be 5.13 to 6.14 normalization normalization method, the definition of the words "the contents of all the components in the sample and set to 100%, calculated Wherein a component content Quantitative Methods percent. Components corresponding to the respective peak use relative quantification correction factor calibration. "; --- Chapter 7 symbol reference material be replaced by "internal standard"; --- Appendix B increases B. 1 peak area percentage method. The Standard Appendix A, Appendix B are normative appendix. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemistry. This standard was drafted. China Inspection and Quarantine Science Research Institute, the Chemical Institute of Standardization. The main drafters of this standard. Yu Wen Lin, Wei Jing, Wang Junbing, Falls Apart, Zhou Xin, Wang Lifeng, Sun Xin, Wang Zheng. This standard was first published in 1985, this is the first revision. Gas Chromatography term1 ScopeThis standard specifies the general term gas chromatography, instruments, fixed and mobile phases, chromatographic parameters, chromatograms and other symbols. This standard applies to gas chromatography.2 general terms2.1 Gas is used as the mobile phase chromatography. It uses material phase difference between the stationary phase partition coefficient in the flow, when the two-phase relative Exercise, sample components between the two phases were repeated allocation, distribution coefficients of the components, even if only slightly different, with the mobile phase (Gas) to be moving distance of the last components of the sample to obtain separation and determination. 2.2 The stationary phase coated on the carrier as a stationary phase in gas chromatography. 2.3 Solid (usually adsorbent) as a stationary phase by gas chromatography. 2.4 Using a packed column gas chromatography. 2.5 Column or heated by gas chromatography in accordance with a predetermined program continuously in stages. 2.6 After the first sample column, the column or post-column reaction zone, the chemical reaction of gas chromatography. 2.7 After the sample temperature, laser, arc and other means, after cleavage of smaller molecules into the column gas chromatography, gas chromatography reaction A. 2.8 Analysis by gas chromatography in a closed system with a liquid (or solid) samples in thermodynamic equilibrium of gaseous components, is an indirect measure A method of volatile components of a given sample. 2.9 Having a high separation efficiency of capillary column gas chromatography. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4946-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 4946-2008_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 4946-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4946-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
