SN/T 2314-2009 English PDF

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SN/T 2314-2009: Determination of diphenylurea residues in foodstuffs animal origin for import and export
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2314-2009	709	Add to Cart	5 days	Determination of diphenylurea residues in foodstuffs animal origin for import and export	Valid

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Basic data

Standard ID: SN/T 2314-2009 (SN/T2314-2009)
Description (Translated English): Determination of diphenylurea residues in foodstuffs animal origin for import and export
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X22
Classification of International Standard: 67.120.01
Word Count Estimation: 27,219
Date of Issue: 2009-07-07
Date of Implementation: 2010-01-16
Regulation (derived from): Industry standard filing Notice 2009 No. 10 (No. 118 overall)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the export movement derived food nicarbazin (mark all residues for the two nitro diphenyl urea) and imidocarb residual liquid chromatography and liquid chromatography mass spectrometry/mass spectrometry method. This standard applies to beef, chicken, beef liver, chicken liver and eggs nicarbazin and imidocarb residues and confirmation.

SN/T 2314-2009: Determination of diphenylurea residues in foodstuffs animal origin for import and export

---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 diphenylurea residues in foodstuffs animal origin for import and export Exit inspection and quarantine industry standard book People's Republic of China Importers residues in food of animal origin diphenyl urea Detection method Posted 2009-07-07 2010-01-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

The Standard Appendix A, Appendix B and Appendix C are informative appendices. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Guangdong Entry-Exit-Entry Inspection and Heilongjiang People's Republic of China Quarantine Bureau. The main drafters of this standard. Linhai Dan, Yao Yang Xun, Shaolin Zhi, Raymond, Xie Shou new, Qin Yan, Hong celebrate Wuying Xuan. This standard is the first release of the entry-exit inspection and quarantine industry standards. Importers residues in food of animal origin diphenyl urea Detection method

1 Scope

This standard specifies the import and export of animal-derived foods nicarbazin (symbol residue are double-nitro-diphenyl urea) and imidocarb Residues Liquid chromatography and liquid chromatography - Determination of MS/MS method. This standard applies to beef, chicken, beef liver, chicken liver and eggs nicarbazin and imidocarb residues measured and confirmed.

2 Method summary

Samples were extracted with acetonitrile under basic conditions, liquid distribution hexane solution imidocarb subject to weak cation exchange solid phase extraction (SPE), with Liquid chromatography, external standard; liquid chromatography - mass spectrometry/mass spectrometry and confirmed, the amount of internal standard are dual-nitro-diphenyl urea, external standard Amount imidocarb.

3 Reagents and materials

Unless otherwise indicated, all reagents were of analytical grade, water is deionized water. 3.1 acetonitrile. chromatography. 3.2 n-hexane. 3.3 Methanol. chromatographically pure. 3.4 glacial acetic acid. Chromatographic pure. 3.5 potassium hydroxide. 3.6 N, N- dimethylformamide. 3.7 anhydrous sodium sulfate. After burning 650 ℃ 4h, placed in the dryer set aside. 3.8 acetonitrile saturated with n-hexane. n-hexane and acetonitrile were mixed enough to saturation. 3.9 0.1% aqueous acetic acid. Take glacial acetic acid 1mL, water volume to 1L. Through 0.45μm filter spare. 3.10 1% aqueous solution of acetic acid. Take glacial acetic acid 10mL, water volume to 1L. Through 0.45μm filter spare. 3.11 2% aqueous solution of acetic acid. Take glacial acetic acid 2mL, water volume to 100mL. Through 0.45μm filter spare. 3.12 5% acetic acid in methanol. glacial acetic acid to take 5mL, with methanol to 100mL. 3.13 50% potassium hydroxide solution. Take 50g of potassium hydroxide, dissolved in 100mL water. 3.14 - 0.1% acetic acid in methanol (1 + 1, volume ratio). Measure 50mL methanol was added 50mL0.1% aqueous acetic acid (3.9), mixed Spare uniform. 3.15 blank sample extraction solution - water (1 + 9, volume ratio). 1mL measure the blank sample extract solution, add water, 9mL, mixing spare. 3.16 pairs nitro diphenyl urea are standard substance (Dinitrocarbanilide, CAS number. 587-90-6). purity greater than or equal to 97%. 3.17 pairs microphone phenylurea standard substance (Imidocarb, CAS number. 27885-92-3). purity greater than or equal to 97%. 3.18 deuterated nitro-stilbene bis urea (both double-nitro diphenyl urea -d8, Dinitrocarbanilide-d8). purity greater than or equal to 99%. 3.19 pairs are nitro diphenyl urea stock standard solution (100mg/L). accurately weighed amount nitro stilbene double standard substance urea, plus N, N- two Dimethylformamide 5mL dissolved in acetonitrile dubbed the concentration of 100mg/L of standard stock solution. The solution was stored at 4 ℃. 3.20 pairs microphone phenylurea stock standard solution (100mg/L). accurately weighed amount imidocarb standard substance, dubbed the concentration of acetonitrile 100mg/L of standard stock solution. The solution was stored at 4 ℃. 3.21 deuterated nitro-stilbene double standard urea stock solution (100mg/L). accurately weighed amount of deuterated nitro-stilbene double standard substance urea, ......

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