HYT197-2015 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. HYT197-2015: Determination of total alkalinity in seawater on potentiometric titration using an open-cell titration Status: Valid
Basic dataStandard ID: HY/T 197-2015 (HY/T197-2015)Description (Translated English): Determination of total alkalinity in seawater on potentiometric titration using an open-cell titration Sector / Industry: Marine Industry Standard (Recommended) Classification of Chinese Standard: Z17 Classification of International Standard: 07.060; 13.060 Word Count Estimation: 8,848 Date of Issue: 2016-03-02 Date of Implementation: 2016-06-01 Regulation (derived from): State Oceanic Administration Notice 2016 No. 1 (Total No. 25) Issuing agency(ies): State Oceanic Administration Summary: This standard specifies the principle, analysis steps and calculation of the results of the open potentiometric titration method for determining the total alkalinity of seawater. This standard is applicable to the determination of the total alkalinity of oceanic seawater, coastal seawater and estuarine seawater, and the determination range is (1 700 ~ 2 700) ��mol/kg. HYT197-2015: Determination of total alkalinity in seawater on potentiometric titration using an open-cell titration---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 total alkalinity in seawater on potentiometric titration using an open-cell titration ICS 07.060;13.060 Z17 People's Republic of China Marine Industry Standard Determination of total alkalinity of sea water by open potentiometric titration Released on.2016-02-16 2016-06-01 Implementation Issued by the State Oceanic Administration ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the National Marine Environmental Monitoring Center. This standard is under the jurisdiction of the National Marine Standardization Technical Committee (SAC/TC283). Drafting organization of this standard. National Marine Environmental Monitoring Center. The main drafters of this standard. Xu Xuemei, Wang Juying, Zheng Nan, Zang Kunpeng, Zhao Huade, Huo Cheng, Mu Jingli. Determination of total alkalinity of sea water by open potentiometric titration1 ScopeThis standard specifies the method principle, analysis procedure and result calculation for the determination of total alkalinity of seawater by open-mouth potentiometric titration. This standard is applicable to the determination of total alkalinity of ocean seawater, coastal seawater, and estuary seawater, etc., and the measurement range is (1700~ 2700) μmol/kg.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 12763.4-2007 Marine Survey Specification Part 4.Investigation of Seawater Chemical Elements GB/T 12763.7 Ocean Survey Specification Part 7.Ocean Survey Data Exchange3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Totalalkalinity, TAlk The number of moles of hydrogen ions corresponding to the amount of proton acceptors exceeding proton donors per kilogram of seawater, in micromoles per kilogram (μmol/kg), see formula (1) for the definition. TAlk=[HCO3-] 2[CO32-] [B(OH)4-] [OH-] [HPO42-] 2[PO43-] [SiO(OH)3-] [NH3] [HS-] -[H ]F-[HSO4-]-[HF]-[H3PO4]- (1) Note 1.Proton donor refers to the component in seawater with a dissociation constant K >10-4.5 when the temperature is 25℃ and the ionic strength is 0; the proton acceptor refers to the component in seawater under the same conditions Components with dissociation constant K≤10-4.5; Note 2.Adapted from GB/T 12763.4-2007. 3.2 Gran function, GF Based on the intermediate function defined when the total alkalinity of sea water is measured by the potentiometric titration method, the definition formula is shown in formula (2). GF= [H](V0 VHCl) V0 = E-E0 a (V0 VHCl) V0 = CHCl(VHClVeq)/V0 (2) Where. GF ---Gran function; [H]---The concentration of hydrogen ions in the solution; V0 --- The titration volume of the seawater sample, in milliliters (mL); VHCl --- the dropping volume of the hydrochloric acid standard solution at each titration point, in milliliter (mL); E ---The potential value of the solution, in millivolts (mV); E0 --- the exclusive constant of the electrode; ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HYT197-2015_English be delivered?Answer: Upon your order, we will start to translate HYT197-2015_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 HYT197-2015_English with my colleagues?Answer: Yes. 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