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GB/T 23204-2008 English PDF

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GB/T 23204-2008: Determination of 519 pesticides and related chemicals residues in tea -- GC-MS method
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Basic data

Standard ID GB/T 23204-2008 (GB/T23204-2008)
Description (Translated English) Determination of 519 pesticides and related chemicals residues in tea -- GC-MS method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard X04
Classification of International Standard 67.050
Word Count Estimation 84,820
Date of Issue 2008-12-31
Date of Implementation 2009-05-01
Quoted Standard GB/T 6379.1; GB/T 6379.2; SN/T 0918-2000
Regulation (derived from) National Standard Approval Announcement 2008 No.27 (Total No.140)
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 green tea, tea, tea, Oolong 490 kinds of pesticides and related chemicals (see Appendix A and Appendix F) residual gas chromatography-mass spectrometry. And green tea, tea, tea, Oolong 29 acidic herbicide residues by gas chromatography-mass spectrometry. This standard applies to green tea, tea, tea, qualitative identification oolong 490 kinds of pesticides and related chemicals residues, which can be quantitatively measured pesticides and related chemicals 453 kinds, as well as green tea, tea, tea, Oolong dichloro picolinic acid, tune acid, chlorophenoxyacetic acid, dicamba, 2-a -4-chloro, 2, 4-propionic acid, bromoxynil, 2, 4 -, triclopyr, 1-Naphthylacetate, 5-chlorophenol. 2, 4, 5-drop acid, grass off flat, 2-a -4-neoprene acid, 2, 4, 5-tears, fluroxypyr, 2, 4-drop acid, Bentazone, iodobenzonitrile, picloram, Quinclorac, fluazifop, haloxyfop, straw fluorine, acifluorfen, ethyl sulfide grass, fenhexamid, quizalofop, Bispyribac of 29 acidic herbicide residues measured. 453 kinds of pesticides and related chemicals for the quantitative determination of the standard detection limit of 0. 001mg/kg ~ 0. 500mg/kg (see Appendix A), 29 acidic herbicide detection limit of 0. 01mg/kg.

GB/T 23204-2008: Determination of 519 pesticides and related chemicals residues in tea -- GC-MS method


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Determination of 519 pesticides and related chemicals residues in tea. GC-MS method ICS 67.050 X04 National Standards of People's Republic of China Tea 519 pesticides and related chemicals Determination of the amount of residual gas chromatography - mass spectrometry Posted 2008-12-31 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Tea 490 pesticides and related chemicals residues by gas chromatography - mass spectrometry 1 3.1 Principle 1 3.2 Reagents and materials 1 3.3 Instrument 2 3.4 Sample Preparation and Storage 2 3.5 Determination of Step 2 3.6 Calculation Results 3 3.7 Precision 4 4 tea 29 acidic herbicide residues by gas chromatography - mass spectrometry 4 4.1 Principle 4 4.2 Reagents and materials 4 4.3 Instrument 5 4.4 Sample Preparation and Storage 5 4.5 Determination of Step 5 4.6 Calculation Results 6 Precision 7 4.7 Appendix A (informative) tea 490 pesticides and related chemicals Chinese and English name, the detection limit, Grouping, solvent selection and concentration of the mixed standard solution 8 Annex B (informative) retention time tea 490 pesticides and related chemicals and the internal standard compound, Ion quantitative and qualitative ions and ion abundance of quantitative and qualitative ion ratio of 24 Annex C (informative) tea 490 pesticides and related chemicals A, B, C, D, E, F six groups Selected ion monitoring packet table 40 Annex D (informative) tea 490 pesticides and related chemicals in the tea matrix reference materials Selected ion monitoring GC-MS 47 Annex E (informative) tea 490 pesticides and related chemicals precision data table 53 Annex F (informative) tea 490 pesticides and related chemicals English name Chinese control index (In alphabetical order) 68 Annex G (informative) tea 29 acidic herbicide retention time, ion quantitative and qualitative ion And quantitative ion and abundance ratios and qualitative ion detection limit of 76 Appendix H (informative) tea 29 acidic herbicide selected ion monitoring packet table 78 Annex I (informative) tea 29 acidic herbicide Standards SIM chromatograms 79 Appendix J (informative) tea 29 acidic herbicide precision data table 80

Foreword

The Standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E, Appendix F, Appendix G, Appendix H, Appendices I and J are informative appendix. This standard is proposed and managed by the State Administration of Quality Supervision Inspection and Quarantine of People's Republic of China. This standard "tea 490 pesticides and related chemicals residues by gas chromatography - mass spectrometry," the drafting unit. China people Qinhuangdao People's Republic of Exit Inspection and Quarantine, Tea Research Institute of Chinese Academy of Agricultural Sciences, Tianjin Science and Technology Co., Ltd. 博纳艾杰尔; "tea 29 acidic herbicide residues by gas chromatography - mass spectrometry, "the drafting unit. Qinhuangdao People's Republic of China Entry-Exit Inspection Quarantine Bureau, People's Republic of China Hunan Exit Inspection and Quarantine. This standard "tea 490 pesticides and related chemicals residues by gas chromatography - mass spectrometry," The main drafters. Chen Zongmao, Pang Guofang, Caoyan Zhong, Hu Xueyan, Individual Students Liang Ping, Wang Qun-Jie, LOU Zheng Yun, Luo Fengjian, Tangfu Bin, Liu Guangming, Zhang Junyan; "tea 29 acidic herbicide residues by gas chromatography - mass spectrometry, "The main drafters. Yanhong Fei, Zhang Ying, Huang Zhiqiang, Huang Ping, Li Yongjun, Wang Meiling, Pang Guofang. Tea 519 pesticides and related chemicals Determination of the amount of residual gas chromatography - mass spectrometry

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 3.1 Principle Homogenized sample with acetonitrile extraction, solid-phase extraction (SPE), eluted with acetonitrile - toluene pesticides and related chemicals, gas chromatography - mass spectrometry detection Measurement, internal standard. 3.2 Reagents and materials 3.2.1 acetonitrile. chromatography. 3.2.2 Toluene. pure class distinctions. 3.2.3 acetone. AR, redistilled. 3.2.4 dichloromethane. chromatography. 3.2.5 n-hexane. AR, redistilled. 3.2.6 Methanol. chromatographically pure. 3.2.7 Anhydrous sodium sulfate. AR. 650 ℃ burning 4h, stored in a desiccator, cool reserve. 3.2.8 acetonitrile - toluene (3 + 1, volume ratio).

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