GB/T 22980-2008Determination of flunixin residue in bovine milk and milk powder - LC-UV method (English PDF)

1 Scope

This standard specifies the pure raw milk and milk powder flunixin (flunixin) residues LC - UV detection method.

This standard applies to the determination of pure raw milk and milk powder flunixin residues.

The detection limit of this standard. raw milk was 5.0µg/L, pure milk of 40µg/kg.

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, according to research encourages the parties to the agreement

Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions (GB/T 6379.1-

2004, ISO 5725-1.1994, IDT)

GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat

Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT)

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

Principle 3

Samples were digested with acetonitrile under acidic conditions extracted by n-hexane and solid-phase extraction (SPE), the configuration of the high performance liquid UV detector

Determination phase chromatography, external standard.

4 Reagents and materials

Unless otherwise indicated, all reagents were of analytical grade. Water as a water GB/T 6682 regulations.