GB/T 31816-2015 English PDF

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GB/T 31816-2015: Water treatment chemicals -- Determination of the molecular weight and molecular weight distribution of polymers -- Gel filtration chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31816-2015	189	Add to Cart	3 days	Water treatment chemicals -- Determination of the molecular weight and molecular weight distribution of polymers -- Gel filtration chromatography	Valid

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Basic data

Standard ID: GB/T 31816-2015 (GB/T31816-2015)
Description (Translated English): Water treatment chemicals -- Determination of the molecular weight and molecular weight distribution of polymers -- Gel filtration chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Classification of International Standard: 71.040.50
Word Count Estimation: 9,990
Date of Issue: 2015-07-03
Date of Implementation: 2016-02-01
Quoted Standard: GB/T 6682
Regulation (derived from): National Standard Announcement 2015 No.22
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 methods and test conditions by gel filtration chromatography (GFC) Determination of molecular weight polymeric water treatment agent and its distribution. This Standard applies to the determination of the relative average molecular weight and molecular weight of water treatment agent in a water-soluble polymer DISPERSOR distribution. This Standard applies to the determination of the molecular weight distribution in the range of 100 to 30 000 polymeric water treatment agent. This Standard does not apply to the mobile phase separation material reacts Branch, absorption, adsorption and other water-soluble polymer interactions.

GB/T 31816-2015: Water treatment chemicals -- Determination of the molecular weight and molecular weight distribution of polymers -- Gel filtration 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.
Water treatment chemicals. Determination of the molecular weight and molecular weight distribution of polymers. Gel filtration chromatography ICS 71.040.50 G76 National Standards of People's Republic of China Polymer molecular weight, water treatment agent Its distribution was measured by gel filtration chromatography Issued on. 2015-07-03 2016-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Chemistry (SAC/TC63) centralized. This standard was drafted. CNOOC Tianjin Chemical Research Institute, Henan clear Water Technology Co., Ltd., Shandong Taihe Water Treatment Ltd., China Petroleum and Chemical Corporation Beijing Research Institute of Chemical Yanshan Branch, Tianjin Pacific Technology Co., Ltd. The main drafters of this standard. Hou Yang, Jin Xiaoxia, starfish Yang, Cheng made the final, Wang Dong, Zhuchuan Jun, Li Lin. Polymer molecular weight, water treatment agent Its distribution was measured by gel filtration chromatography

1 Scope

This standard specifies the method of gel filtration chromatography (GFC) Determination of molecular weight polymeric water treatment agent and its distribution test condition. This standard applies to the determination of the relative average molecular weight and molecular weight of the water-soluble polymer water treatment agent DISPERSOR distribution. This standard For the determination of molecular weight distribution in the range of 100 to 30000 polymeric water treatment agent. This standard does not apply to phase separation material reacts with the flow, absorption, adsorption and other water-soluble polymer interactions.

2 Normative references

The 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. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Gel filtration chromatography gelfiltrationchromatography; GFC Based on the molecular size of the polymer with water or a buffer solution as mobile phase, so that the different components of the polymer can be separated from a liquid chromatography From technology. 3.2 Polymer molecular weight molecularweightofpolymer Structural units and structural units of the molecular weight of the product, the available number average molecular weight, weight average molecular weight, Z-average molecular weight, or viscosity average molecular weight peak Bit molecular weight characterization. 3.3 The number average molecular weight of the number-averagemolecularweight Mn Molecular weight according to the statistical average number of molecules, Mn = i = 1 Hi i = 1 HiMi-1 ......

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