GB/T 23204-2008Determination of 519 pesticides and related chemicals residues in teas - GC-MS method (English PDF)

1 Scope

This standard specifies the green tea, black tea, Pu'er tea, oolong tea 490 pesticides and related chemicals (see Appendix A and Appendix F) residue

Gas chromatography - mass spectrometry, as well as green tea, black tea, Pu'er tea, oolong tea 29 acidic herbicide residues gas chromatography -

Mass spectrometry.

This standard applies to green tea, black tea, Pu'er tea, oolong tea 490 pesticides and related chemicals residues in the qualitative identification, which may be set

Determination of the amount of pesticides and related chemicals 453 kinds, as well as green tea, black tea, Pu'er tea, oolong tea dichloro picolinic acid, acid tone of chlorophenoxy acetic

Acid, dicamba, 2-methyl-4-chloro, 2,4-D acid, bromoxynil, 2,4-D, triclopyr acid, 1-naphthaleneacetic acid, 5-chloro-phenol, 2,4 , 5 drops of propionic acid,

Chloramben, 2-methyl -4- neoprene acid, 2,4,5-T, fluroxypyr, 2,4-D acid, bentazone, ioxynil, picloram, quinclorac, fluazifop

Ling, haloxyfop, straw fluorine, acifluorfen, ethyl sulfide grass, fenhexamid, quizalofop, bispyribac 29 acidic herbicide residues

Determination.

453 kinds of pesticides and related chemicals present standard quantitative determination of the detection limit of 0.001mg/kg ~ 0.500mg/kg (see attached

Record A), 29 acidic herbicide method detection limit of 0.01mg/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, 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/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)

SN/T 0918-2000 and export of tea sampling method

3 Tea 490 pesticides and related chemicals residues by gas chromatography - mass spectrometry