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Determination of dichlobenil residues in food for import and export. GC-MS method
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SN/T 2385-2009
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Basic data | Standard ID | SN/T 2385-2009 (SN/T2385-2009) | | Description (Translated English) | Determination of dichlobenil residues in food for import and export. GC-MS method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 20,270 | | Date of Issue | 2009-09-02 | | Date of Implementation | 2010-03-16 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | Entry-Exit Inspection and Quarantine circular industry standards (2009. 09. 02) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the food Dichlobenil residues by gas chromatography mass spectrometry. This standard applies to rice, beans, chestnuts, spinach, onions, mushrooms, tomatoes, mangoes, oranges, blackberries, watermelon, pork and milk Diuron nitrile residue detection and confirmation. | SN/T 2385-2009: Determination of dichlobenil residues in food for import and export. GC-MS method
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Determination of dichlobenil residues in food for import and export.GC-MS method
Exit inspection and quarantine industry standard book People's Republic of China
Determination of imported and exported food diuron nitrile residues
Gas chromatography - mass spectrometry
Posted 2009-09-02
2010-03-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A and Appendix B are informative.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Beijing Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this standard. Lu Xiaoyu, Wang Jinhua, Xu Jing Jing, Zhang Rong, Wang Ying, Lin Yuanhui.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Determination of imported and exported food diuron nitrile residues
Gas chromatography - mass spectrometry
1 Scope
This standard specifies the foods diuron nitrile residual gas chromatography - mass spectrometry.
This standard applies to rice, beans, chestnuts, spinach, onions, mushrooms, tomatoes, mangoes, oranges, blackberries, watermelon, pork and milk enemy
Nitrile grass residues in the detection and confirmation.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms of dated references, all subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to study under this agreement is standard
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 PRINCIPLE OF THE METHOD
Sample remaining diuron nitrile extracted with acetonitrile by solid phase extraction (SPE) column cleanup by gas chromatography - mass spectrometry detection, external standard
Statutory amount.
4 Reagents and materials
Unless otherwise indicated, the reagents used were HPLC grade water as a water line with GB/T 6682 regulations.
4.1 acetonitrile.
4.2 toluene.
4.3 acetone.
4.4 Diethylene glycol. AR.
4.5 Sodium chloride. AR.
4.6 anhydrous sodium. AR. After burning 650 ℃ 4h, placed in a desiccator.
4.7 protective agent. 2% diethylene glycol - acetone solution. Take acetone 100mL, was added 2mL of diethylene glycol, and mix.
4.8 Eluent. acetonitrile - toluene (1 + 3, volume ratio). Take acetonitrile 150mL, was added 50mL of toluene, and mix.
4.9 diuron nitrile standards (dichlobenil). CAS1194-65-6, molecular formula. C7H3Cl12N, molecular weight 172.02, purity greater than
Equal to 99%.
4.10 diuron nitrile standard stock solution. accurately weighed amount of diuron nitrile standards (accurate to 0.1mg), was dissolved in toluene to prepare a
Standard stock solution 1000μg/mL, and stored at -18 ℃.
4.11 diuron nitrile standard solution. if necessary diluted with toluene to a suitable concentration of standard working solution. Standard work 0.1μg/mL of
As the solution was stored at -18 ℃.
4.12 graphite carbon SPE. ENVI-Carb, 6mL, 500mg, or equivalent person. Before using the upper layer was added 1g ~ 2g of anhydrous sulfuric acid
Sodium, with 10mL acetonitrile - toluene (4.8) activation.
4.13 C18 solid phase extraction column. C18,6mL, 1000mg, or equivalent person. Before using the upper layer was added 1g ~ 2g anhydrous sodium sulfate, with 10mL
Acetonitrile - toluene (4.8) activation.
4.14 microporous membrane. 0.45μm, organic phase.
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