GB/T 22312-2008 English PDF

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GB/T 22312-2008: Plastics -- Polyacrylamide -- Determination for residual acrylamide
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22312-2008	130	Add to Cart	3 days	Plastics -- Polyacrylamide -- Determination for residual acrylamide	Obsolete

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Basic data

Standard ID: GB/T 22312-2008 (GB/T22312-2008)
Description (Translated English): Plastics -- Polyacrylamide -- Determination for residual acrylamide
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080
Word Count Estimation: 11,124
Date of Issue: 2008-08-04
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 12005.3-1989; GB/T 12005.4-1989; GB/T 12005.5-1989
Quoted Standard: GB/T 601-2002; GB/T 603-2002; GB/T 4946-2008; GB/T 6682-1992; GB/T 12005.2-1989
Regulation (derived from): National Standard Approval Announcement 2008 No.14 (Total No.127)
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 method for the determination of residual acrylamide in polyacrylamide content.

GB/T 22312-2008: Plastics -- Polyacrylamide -- Determination for residual acrylamide

---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.
Plastics. Polyacrylamide. Determination for residual acrylamide ICS 83.080 G31 National Standards of People's Republic of China Replacing GB/T 12005.3-1989, GB/T 12005.4-1989, GB/T 12005.5-1989 Plastic polyacrylamide residual acrylamide Determination Method Posted 2008-08-04 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 12005.3-1989 "Polyacrylamide residual acrylamide content determination bromide method" GB/T 12005.4-1989 "Polyacrylamide residual acrylamide content determination liquid chromatography", GB/T 12005.5- 1989 "Polyacrylamide residual acrylamide content determination by gas chromatography", the GB/T 12005.3-1989, GB/T 12005.4-1989 and GB/T 12005.5-1989 integration were based standard method A, Method B and Method C. This standard is in the original standard differences are as follows. a) the standard name changed to "Determination of the plastic polyacrylamide residual acrylamide content"; b) the "reference standard" to "normative references" to add a normative references; c) editorial changes. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of plastic (SAC/TC15) centralized. This standard is drafted by. National Quality Supervision and Inspection Center of synthetic resin. Participated in the drafting of this standard. Heilongjiang University, Beijing nuclear industry fifth Institute. The main drafters of this standard. Wang Yan, Chen Jiushun, White continued Duo, Hao Huilian, Zhangfeng Lian. This standard replaces the standards previously issued as follows. --- GB/T 12005.3-1989; --- GB/T 12005.4-1989; --- GB/T 12005.5-1989. Plastic polyacrylamide residual acrylamide Determination Method

1 Scope

1.1 standard specifies the method for the determination of polyacrylamide residual levels of acrylamide. 1.2 Method A specifies the use of aqueous solution and methanol - water extraction sample solution prepared to bromine addition determination polyacrylamide residual acrylamide An amide content. Suitable for different residual propylene polymerization process powder and gum nonionic and anionic polyacrylamide Determination of acrylamide content. Residual acrylamide content higher than 0.5% polyacrylamide aqueous solution was prepared by Method adapted samples were measured, Residual acrylamide content higher than 0.05% polyacrylamide suitable for use extracts prepared samples were measured. 1.3 Method B specifies the leached residue of acrylamide from polyacrylamide and its content was determined by liquid chromatography method. Measuring a Given the residual acrylamide content of less than 0.01% polyacrylamide gel and powder. 1.4 Method C specifies the leached residue of acrylamide from polyacrylamide and its content was determined by gas chromatography method. Apply powder Determination of jelly-like and non-ionic polyacrylamide and anionic polyacrylamide residual levels of acrylamide, and acrylamide content Higher than 0.01%, especially more than 0.05% of the measured sample.

2 Normative references

The 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 601-2002 Chemical Reagent standard titration solution GB/T 603-2002 Chemical Reagent Test Methods - Preparations with GB/T 4946-2008 term gas chromatography Laboratory use specifications and test methods GB/T 6682-1992 Analysis GB/T 12005.2-1989 polyacrylamide solid content determination 3 Method A. Bromination 3.1 Principle An excess of potassium bromate in the sample solution - a solution of potassium bromide, potassium bromide and potassium bromate reaction of bromine in acidic medium with the sample Acrylamide double bond. After completion of the reaction, an excess of potassium iodide and reduction of unreacted bromine is generated iodo, with sodium thiosulfate standard Precipitated iodine solution back drop. 3.2 Reagents Unless otherwise specified in this standard, the purity of the reagents used should be more analytical, test water should be consistent with GB/T 6682-1992 Three Or above the water specifications. 3.2.1 hydrochloric acid. 3.2.2 methanol - water extract. volume ratio of 8.2. 3.2.3 bromate - potassium bromide solution. Ba (1/6KBrO3) = 0.1mol/L. According to GB/T 601-2002 formulated. 3.2.4 KI solution. 20%. 3.2.5 aqueous hydrochloric acid. volume ratio of 1. 3.2.6 Starch indicator. Press GB/T 603-2002 formulated. ......

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