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SN/T 3032-2011 English PDF

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SN/T 3032-2011: Determination of melamine and cyanuric acid in foodstuffs for export. HPLC-MS/MS method
Status: Valid
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SN/T 3032-2011English629 Add to Cart 5 days [Need to translate] Determination of melamine and cyanuric acid in foodstuffs for export. HPLC-MS/MS method Valid SN/T 3032-2011

PDF similar to SN/T 3032-2011


Standard similar to SN/T 3032-2011

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Basic data

Standard ID SN/T 3032-2011 (SN/T3032-2011)
Description (Translated English) Determination of melamine and cyanuric acid in foodstuffs for export. HPLC-MS/MS method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X04
Classification of International Standard 67.050
Word Count Estimation 24,247
Date of Issue 2011-09-09
Date of Implementation 2012-04-01
Regulation (derived from) National-Quality-Inspection-accreditation (2011) 492
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the sample preparation and liquid chromatography melamine and cyanuric acid residues in food-mass spectrometry/mass spectrometry. This standard applies to eggs, pork, liver, pig kidneys, casings, shrimp, honey, soy milk, soybean meal, protein powder, liquid milk, milk, milk, cheese, cream, ice cream, candy, biscuits melamine and trimers Quantitative determination of the amount of residual isocyanate and confirmation.

SN/T 3032-2011: Determination of melamine and cyanuric acid in foodstuffs for export. HPLC-MS/MS method


---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 melamine and cyanuric acid in foodstuffs for export.HPLC-MS/MS method People's Republic of China Entry-Exit Inspection and Quarantine Standards Food exports of melamine and cyanuric acid Detection Liquid chromatography - mass spectrometry/mass spectrometry HPLC-MS/MSmethod Issued on. 2011-09-09 2012-04-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. Please note that some content of this document may involve patents, publication of this document Institutions do not assume the responsibility to identify these patents. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau, Chinese Academy of Inspection and Quarantine, the People's Republic of China And country SZCIQ, People's Republic of China Hubei Exit Inspection and Quarantine. The main drafters of this standard. Deng Xiaojun, Zhao Shanzhen, Guo Dehua, LI Shu-juan, Peng Tao, Jinbao Hui, Li Han, Sheng Yonggang, Zhao Asia, Wuqiao Bin, Zhang fluttering. Food exports of melamine and cyanuric acid Detection Liquid chromatography - mass spectrometry/mass spectrometry

1 Scope

This standard specifies the sample preparation and liquid chromatography melamine and cyanuric acid residues in food - mass spectrometry/mass spectrometry. This standard applies to eggs, pork, liver, kidney, sausage, shrimp, honey, soy milk, soy flour, protein powder, liquid milk, milk powder, condensed milk, cheese, Cream, ice cream, candy, cookies melamine and cyanuric acid residues in the quantitative determination and confirmation.

2 Method summary

After a sample of melamine and cyanuric acid residue extracted with acetonitrile and water, hydrochloric acid to adjust the pH to 2.0 to 3.0, acetonitrile saturated n Hexane-defatted extract by ion exchange and silica composite solid-phase extraction (SPE), liquid chromatography - mass spectrometry/mass spectrometry and validation, internal standard method Quantified.

3 Reagents and materials

Unless otherwise specified, use the analytical reagent, the water is deionized water. 3.1 acetonitrile. HPLC grade. 3.2 Methanol. HPLC grade. 3.3 hexane. HPLC grade. 3.4 formic acid. HPLC grade. 3.5 ammonium formate. 3.6 hydrochloric acid. 3.7 ammonia. 3.8 diethylamine. 3.9 aqueous acetonitrile (7 3, V1 V2). amount of 700mL of acetonitrile and 300mL water, and mix. 3.10 aqueous acetonitrile (5 5, V1 V2). amount of 500mL of acetonitrile and 500mL water, and mix. 3.11 1mol/L hydrochloric acid. precise amount of 83mL concentrated hydrochloric acid (3.6) diluted to volume with water to 1L. 3.12 5% methanol and ammonia. amount of 95mL of methanol and 5mL ammonia, and mix. Preparation before use. 3.13 100mmol/L ammonium formate in acetonitrile (1 9, V1 V2) pH3.2 solution. Weigh 6.3g ammonium formate (3.5) was dissolved in 100mL of purified water, was added 900mL of acetonitrile mixed with formic acid to adjust the pH to 3.2 ± 0.1. 3.14 0.1% formic acid in acetonitrile. amount of 1L of acetonitrile, formic acid is added 1mL mix. 3.15 Standard substances. melamine (melamine, CAS number. 108-78-1), melamine isotope internal standard (15N3-melamine, CAS No. 287476-11-3), cyanuric acid (cyanuricacid, CAS number. 108-80-5), cyanuric acid isotope internal standard (13C3-cyanuric acid, CAS number.201996-37-4), greater than 98% purity. 3.16 standard stock solution. Weigh respectively melamine, melamine isotope within the underlying standards (3.15) 0.1g (accurate to 0.0001g), with aqueous acetonitrile (3.10) dissolved and diluted to volume in 100mL flask, were prepared at a concentration of 1mg/mL of Standard stock solution. The solution should be formulated in a brown flask below -18 ℃ stored. Were accurately weighed cyanuric acid, trimer Internal standards of labeled cyanate (3.15) 0.1g (accurate to 0.0001g), was dissolved in a small amount of diethylamine (3.8), diluted with methanol and set the volume

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