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SN/T 2095-2008: Determination of chlorfluazuron residues in vegetables for import and export.High performance liquid chromatographic method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2095-2008 | English | 369 |
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Determination of chlorfluazuron residues in vegetables for import and export.High performance liquid chromatographic method
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SN/T 2095-2008
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Basic data | Standard ID | SN/T 2095-2008 (SN/T2095-2008) | | Description (Translated English) | Determination of chlorfluazuron residues in vegetables for import and export.High performance liquid chromatographic method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X26 | | Word Count Estimation | 14,116 | | Date of Issue | 2008-07-17 | | Date of Implementation | 2009-02-01 | | Regulation (derived from) | Industry standard filing Notice 2008 No. 9 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the vegetables Chlorfluazuron residues in sample preparation and high performance liquid chromatographic method. This standard applies to cucumbers, radishes, peas in Chlorfluazuron pulse detection of residues. | SN/T 2095-2008: Determination of chlorfluazuron residues in vegetables for import and export.High performance liquid chromatographic method
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Determination of chlorfluazuron residues in vegetables for import and export.High performance liquid chromatographic method
Exit inspection and quarantine industry standard book People's Republic of China
Import and export of vegetables in chlorfluazuron Residue Detection
High Performance Liquid Chromatography
Posted 2008-07-17
2009-02-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Appendix A of this standard is the data appendix.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard by the People's Republic of China Zhejiang Exit Inspection and Quarantine is responsible for drafting.
The main drafters of this standard. Liu Shan, Chen Xiaomei, Shi Lei, Chi Hao Chao, Tang Hang Yan, Yang Lei.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Import and export of vegetables in chlorfluazuron Residue Detection
High Performance Liquid Chromatography
1 Scope
This standard specifies the sample preparation HPLC method in vegetables chlorfluazuron Residues and.
This standard applies to cucumbers, radishes, peas in chlorfluazuron residues detected.
2 Method summary
HPLC measurement sample was extracted with acetonitrile in chlorfluazuron by Florisil column purification, distribution diode array detector
Fixed, external standard.
3 Reagents and materials
Unless otherwise specified, reagents were of analytical grade, water is distilled or deionized water.
3.1 acetonitrile. HPLC grade.
3.2 hexane. HPLC grade.
3.3 ether. HPLC grade.
3.4 sodium chloride.
3.5 anhydrous sodium. 650 ℃ burning 4h, cooled in a desiccator to room temperature and stored in a sealed bottle aside.
3.6 eluent. n-hexane + ethyl ether (8 + 2, volume ratio).
3.7 cotton.
3.8 Florisil. 100 mesh to 200 mesh, particle size. 0.075mm ~ 0.15mm, 650 ℃ burning 4h, 130 ℃ before use day 's work
Of 4h, cooled in a desiccator to room temperature, add 1% of water deactivation backup.
3.9 Purification Column.200mm × 15mm (inner diameter) glass column, the bottom of the fill height of about 5mm and 20mm high cotton anhydrous sodium sulfate (3.5),
10g Florisil, top plus 20mm high over anhydrous sodium sulfate, 20mL hexane rinsed before use.
3.10 chlorfluazuron standards. purity not less than 99.0%.
3.11 chlorfluazuron standard stock solution. accurately weighed amount chlorfluazuron standards, prepared in methanol and 100μg/mL standard stock solution.
0 ℃ ~ 4 ℃ storage (for 6 months).
3.12 chlorfluazuron standard solution. If necessary, the standard stock solution (3.12) and diluted with methanol to the standard working solution of appropriate concentration.
4 instruments and equipment
4.1 high performance liquid chromatography with diode array detector.
4.2 homogenizer.
4.3 rotary evaporator.
4.4 Mixer.
4.5 centrifuge (4000r/min).
5 Sample Preparation and Storage
Shrink from mixing the original sample was separated 1kg, take the edible part, by the organization stamp mill crushed, they were divided into two, charged in a clean container for
As a sample, sealed and marked with tags. The sample is placed in the following -18 ℃ cryopreservation. In the sample preparation procedure, it should prevent sample contamination by
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