GB/T 20770-2008Determination of 486 pesticides and related chemicals residues in grains - LC-MS-MS method (English PDF)

1 Scope

This standard specifies the barley, wheat, oats, rice, corn 486 pesticides and related chemicals (see Appendix A and Appendix E) residues

Allowance liquid chromatography - tandem mass spectrometry.

This standard applies to qualitative identification of barley, wheat, oats, rice, corn 486 pesticides and related chemicals residues, 376 kinds of agriculture

Quantitative determination of drugs and related chemicals residues.

376 kinds of standard quantitative determination of this pesticide and related chemicals detection limit was 0.02µg/kg ~ 0.96mg/kg (see Appendix A).

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.

GB 5491 grain and oilseeds testing for sampling, and sample method

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

Extraction method with acetonitrile homogeneous sample of pesticides and related chemicals, purifying gel permeation chromatography, liquid chromatography - tandem mass spectrometer, outside

Standard method.

4 Reagents and materials

Water as a water GB/T 6682 regulations.