GB/T 22312-2008Plastics -- Polyacrylamide -- Determination for residual acrylamide (English PDF)

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.

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