LY/T 1786-2008 English PDF
Basic dataStandard ID: LY/T 1786-2008 (LY/T1786-2008)Description (Translated English): Determination on tannic value of activated carbon Sector / Industry: Forestry Industry Standard (Recommended) Classification of Chinese Standard: B72 Classification of International Standard: 65.050 Word Count Estimation: 8,859 Date of Issue: 2008-09-03 Date of Implementation: 2008-12-01 Quoted Standard: GB/T 6003.1-1997; GB/T 6682; GB/T 9721 Regulation (derived from): Industry standard filing Notice No. 10 of 2008 Issuing agency(ies): State Forestry Administration Summary: This standard specifies the activated carbon adsorption of tannic acid method. This standard applies to wood powdered activated carbon. LY/T 1786-2008: Determination on tannic value of activated carbon---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 on tannic value of activated carbon ICS 65.050 B72 People's Republic of China Forestry Industry Standard Method for determining the adsorption value of activated carbon tannic acid Released on.2008-09-03 2008-12-01 implementation State Forestry Administration released ForewordAppendix A and Appendix B of this standard are informative annexes. This standard is proposed and managed by the State Forestry Administration. This standard was drafted. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry. The main drafters of this standard. Dai Weijun, Sun Kang, Sun Yunjuan, Zhang Yanping, Chang Xia, Tong Yajuan. Method for determining the adsorption value of activated carbon tannic acid1 ScopeThis standard specifies the method for determining the adsorption value of activated carbon tannin. This standard applies to wood powdered activated carbon.2 Normative referencesThe terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 6003.1-1997 Wire woven mesh test sieve (eqv ISO 3310-1.1990) GB/T 6682 Analytical laboratory water specifications and test methods (GB/T 6682-2008, ISO 3696.1987, MOD) GB/T 9721 Chemical reagents - General rules for molecular absorption spectrophotometry (UV and visible light)3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 The concentration of activated carbon required to reduce the tannic acid concentration from 20 mg/L to 2 mg/L in mg/L.4 Determination of tannin adsorption valueUnless otherwise specified, the reagents used in this standard are of analytical grade, and the water used shall comply with the third grade water specified in GB/T 6682. 4.1 Method summary A certain amount of activated carbon sample and tannic acid solution were stirred and adsorbed, filtered, and measured by visible spectrophotometer at 600 nm. The filtrate absorbance, and the tannic acid concentration in the filtrate was found in the comparison of the tannic acid concentration and the solution absorbance. Calculate the unit concentration of activated carbon The concentration of tannin acid adsorbed is X/M, and on the double logarithmic coordinates, X/M is taken as the ordinate and 犮 is plotted on the abscissa to make the adsorption isotherm of activated carbon. Figure. The X/M value at the abscissa of 2 mg/L was found on the isotherm, and it was calculated that the tannin concentration was reduced from 20 mg/L to 2 mg/L. The concentration of activated carbon is MT, which is the adsorption value of activated carbon tannin. 4.2 Instruments and conditions 4.2.1 Instruments 4.2.1.1 Visible spectrophotometer (GB/T 9721). 4.2.1.2 Balance. Accuracy 0.0001g. 4.2.1.3 Drying box. Temperature control accuracy ±1 °C. 4.2.1.4 Stirrer. Magnetic stirrer or electric mixer. 4.2.2 Conditions The experimental environment temperature is 25 ° C ~ 30 ° C. 4.3 Reagents and solutions 4.3.1 Reagents Standard sample of tannic acid. the content should not be lower than 99.0%. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of LY/T 1786-2008_English be delivered?Answer: Upon your order, we will start to translate LY/T 1786-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically in 9 seconds (download/delivered in 9 seconds). The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of LY/T 1786-2008_English with my colleagues?Answer: Yes. The purchased PDF of LY/T 1786-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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