SN/T 2231: Evolution and historical versions
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| SN/T 2231-2021 | English | RFQ |
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(Determination of Dinotefuran and Its Metabolite Residues in Exported Foods Liquid Chromatography-Mass Spectrometry/Mass Spectrometry)
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SN/T 2231-2021
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| SN/T 2231-2008 | English | 719 |
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Determination of dinotefuran residues in food for import and export. LC-MS/MS
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SN/T 2231-2008
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PDF similar to SN/T 2231-2021
Basic data | Standard ID | SN/T 2231-2021 (SN/T2231-2021) | | Description (Translated English) | (Determination of Dinotefuran and Its Metabolite Residues in Exported Foods Liquid Chromatography-Mass Spectrometry/Mass Spectrometry) | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Date of Issue | 2021-11-22 | | Date of Implementation | 2022-06-01 | | Older Standard (superseded by this standard) | SN/T 2231-2008 | | Regulation (derived from) | General Administration of Customs Announcement No. 97 of 2021 | | Issuing agency(ies) | General Administration of Customs | SN/T 2231-2008: Determination of dinotefuran residues in food for import and export. LC-MS/MS---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of dinotefuran residues in food for import and export.LC-MS/MS
Exit inspection and quarantine industry standard book People's Republic of China
Imported and exported food dinotefuran Residue Detection
Liquid chromatography - mass spectrometry/mass spectrometry
Posted 2008-11-18
2009-06-01 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. Chinese Academy of Inspection and Quarantine, Longda Food Group Limited.
The main drafters of this standard. Li Li, Fu Jian, early Yusheng, Lou Himalayan, Wang Jie.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Imported and exported food dinotefuran Residue Detection
Liquid chromatography - mass spectrometry/mass spectrometry
1 Scope
This standard specifies the sample preparation and liquid chromatography imported and exported food dinotefuran residues - MS/MS detection method.
This standard applies to wheat, peanuts, corn, spinach, apples, carrots, basil, pork and salmon in dinotefuran residues detected
And confirmation.
2 Method summary
Samples were extracted with acetonitrile, after the extract was added over anhydrous sodium sulfate, graphite on non-porous carbon column (Envi-Carb)/amide propyl silyl
Alkylated silica gel column (LC-NH2) purification, liquid chromatography - mass spectrometry/mass spectrometry, external standard.
3 Reagents and materials
Unless otherwise specified, reagents were HPLC grade water for ultra-pure water.
3.1 acetonitrile.
3.2 n-hexane.
3.3 acetone.
3.4 ether.
3.5 Sodium chloride. pure class distinctions.
3.6 anhydrous sodium sulfate. AR, 650 ℃ burning 4h, natural cooling spare stored in a sealed bottle.
3.7 dipotassium hydrogen phosphate (K2HPO4). AR.
3.8 potassium dihydrogen phosphate (KH2PO4). AR.
3.9 Sodium hydroxide. AR.
3.10 hydrochloride. pure class distinctions.
3.11 1mol/L sodium hydroxide. Weigh 40g of sodium hydroxide (3.9), was dissolved in 1L of water.
3.12 1mol/L hydrochloric acid. Weigh 36.5g of pure hydrochloric acid (3.10), was dissolved in 1L of water.
3.13 hexane saturated acetonitrile. in 250mL separating funnel were added 100mL of acetonitrile (3.1) and 100mL hexane
(3.2), fully shaking, standing layer, the lower layer of n-hexane saturated acetonitrile.
3.14 acetone - n-hexane (1 + 1, volume ratio). An equal volume of acetone (3.3) and n-hexane (3.2) were mixed sufficiently shaken.
3.15 phosphate buffer solution. 0.5mol/L (pH = 7.0), weighed 52.7g and 30.2g of dibasic potassium dihydrogen phosphate, is added about
500mL dissolved in water, adjusted pH7.0 with 1mol/L sodium hydroxide or 1mol/L hydrochloric acid, and add water to 1L.
3.16 dinotefuran Standards. dinotefuran, C7H14N4O3, CAS number. 165252-70-0 purity of greater than or equal to 98%.
3.17 dinotefuran standard stock solution. weigh the amount of dinotefuran standard with acetone - n-hexane (1 + 1, volume ratio) formulated as 1.0mg/mL
Standard stock solution; 0 ℃ ~ 4 ℃ preservation. 1 year shelf life.
3.18 dinotefuran standard working solution. if necessary with acetone - n-hexane (1 + 1, volume ratio) stock solution was diluted to a suitable concentration of the standard preparation
Quasi working fluid. 0 ℃ ~ 4 ℃ preservation. Save 1 month.
3.19 Envi-Carb/LC-NH2 solid phase extraction column. 500mg/500mg. SupelcleanENVI-CarbSPE9 (non-porous graphitized
Carbon) with SupelcleanLC-NH2SPE (amidopropyl silylated silica gel) in series.
3.20 Membrane. 0.2μm.
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