SN/T 2231-2021 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2231-2021	RFQ	ASK	3 days	(Determination of Dinotefuran and Its Metabolite Residues in Exported Foods Liquid Chromatography-Mass Spectrometry/Mass Spectrometry)	Valid
SN/T 2231-2008	719	Add to Cart	3 days	Determination of dinotefuran residues in food for import and export. LC-MS/MS	Obsolete

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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Older Standard (superseded by this standard): SN/T 2231-2008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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