GB/T 22626-2008 English PDFUS$139.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22626-2008: Determination of scale inhibition performance of water treatment agents -- Calcium phosphate precipitation method Status: Valid
Basic dataStandard ID: GB/T 22626-2008 (GB/T22626-2008)Description (Translated English): Determination of scale inhibition performance of water treatment agents -- Calcium phosphate precipitation method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G76 Classification of International Standard: 71.040.40 Word Count Estimation: 6,655 Date of Issue: 2008-12-23 Date of Implementation: 2009-09-01 Quoted Standard: GB/T 601; GB/T 603; GB/T 6682; GB/T 6904; GB/T 6913 Regulation (derived from): National Standard Approval Announcement 2008 No.21 (Total No.134) 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 same treatment inhibits calcium phosphate precipitation method for measuring the performance scale calcium phosphate deposition. This standard applies to the determination of similar scale and performance of water treatment agents inhibit the precipitation of calcium phosphate. GB/T 22626-2008: Determination of scale inhibition performance of water treatment agents -- Calcium phosphate precipitation method---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 scale inhibition performance of water treatment agents. Calcium phosphate precipitation method ICS 71.040.40 G76 National Standards of People's Republic of China Determination of scale inhibition performance of water treatment agents Calcium phosphate deposition Posted 2008-12-23 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of Chemical Water Treatment Chemicals Branch (SAC/TC63/SC5) centralized. This standard is drafted by. CNOOC Tianjin Chemical Research & Design Institute, Tianjin Pacific Technology Co., Ltd. The main drafters of this standard. Jin Xiaoxia, SUN, Wang Hui, Bai Ying, Li Lin. Determination of scale inhibition performance of water treatment agents Calcium phosphate deposition1 ScopeThis standard specifies the kind of water treatment agent to inhibit calcium phosphate precipitation method for measuring the performance of scale inhibition of calcium phosphate deposition. This standard applies to the determination of similar water treatment agent performance scale calcium phosphate precipitation inhibition.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. Preparation of GB/T 601 chemical reagent standard titration solution GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) Determination of GB/T 6904 Industrial circulating cooling water and boiler water pH value Determination of GB/T 6913 boiler water and cooling water analysis phosphate (GB/T 6913-2008, ISO 6878.2004, NEQ)3 Method summaryTo configure and water treatment agent containing a certain amount of phosphate and calcium ions into the test solution was prepared, under heating conditions, prompting phosphate and calcium ions Child forming calcium phosphate. Determination After reaching equilibrium supernatant, PO43- concentration, to assess the scale of the performance scale inhibitor, phosphate ion concentration The greater, the calcium phosphate scale performance of the water treatment agent, the better.4 Reagents and materialsTest methods used in the reagents and water, did not indicate when the other requirements, refer to the three water analytical reagent and GB/T 6682 regulations. Standard solution, test preparation and products required, in the absence of other provisions indicate, according to GB T 601, GB/T 603 requirements / preparation. 4.1 sodium tetraborate decahydrate. 4.2 phosphate standard stock solution. 1mL containing about 5mgPO43-. 4.3 disodium edetate (EDTA) Standard Solution. Ba (EDTA) about 0.01mol. 4.4 calcium chloride standard stock solution. 1mL contains about 20mgCa2 +. 4.4.1 Preparation Weigh 57.81g of anhydrous calcium chloride, accurate to 0.01g, dissolved in water, all transferred to 1000mL volumetric flask, dilute with water to After the mark, shaken, filtered to be marked. 4.4.2 Calibration 4.8.1 to take stock standard solution of calcium chloride 10.00mL in 1000mL volumetric flask, dilute to the mark, shake. Pipette 25.00mL diluted solution was placed in 250mL conical flask, add about 50mL water, 5mL potassium hydroxide solution and about 0.1g Calcium - acid indicator, disodium edetate standard titration solution titration solution from purple to light blue is the end. ...... |
