SN/T 1974-2007 English PDF

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SN/T 1974-2007: Determination of methylene blue residues in aquatic product for import and export. LC-MS/MS and HPLC method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1974-2007	709	Add to Cart	4 days	Determination of methylene blue residues in aquatic product for import and export. LC-MS/MS and HPLC method	Valid

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Basic data

Standard ID: SN/T 1974-2007 (SN/T1974-2007)
Description (Translated English): Determination of methylene blue residues in aquatic product for import and export. LC-MS/MS and HPLC method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 22,241
Date of Issue: 2007-08-06
Date of Implementation: 2008-03-01
Quoted Standard: GB/T 6682
Regulation (derived from): National-accreditation-Science [2011] 63
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the residues in aquatic products Determination of methylene blue liquid chromatography mass spectrometry/mass spectrometry and HPLC detection method. This standard applies to fish, shrimp and their products Determination of residual methylene blue and confirmation.

SN/T 1974-2007: Determination of methylene blue residues in aquatic product for import and export. LC-MS/MS and HPLC 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 methylene blue residues in aquatic product for import and export.LC-MS/MS and HPLC method Exit inspection and quarantine industry standard book People's Republic of China Import and export of aquatic products Methylene Blue Residue Detection Liquid chromatography - mass spectrometry/mass spectrometry and high performance liquid chromatography Posted 2007-08-06 2008-03-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

The Standard Appendix A, Appendix B, 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 Jiangsu Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Fujian Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Wu Bin, Xu Jinzhong, Chen Huilan, Yang Fang, Ding Tao, Lin Hong, Guo Dehua, Huang Juan. This standard is the first release of the entry-exit inspection and quarantine industry standards. Import and export of aquatic products Methylene Blue Residue Detection Liquid chromatography - mass spectrometry/mass spectrometry and high performance liquid chromatography

1 Scope

This standard specifies the residues in aquatic Methylene Blue was measured by liquid chromatography - mass spectrometry/mass spectrometry and HPLC methods. This standard applies to the determination of fish, shrimp and residual products of methylene blue and confirmation.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Laboratory use specifications and test methods GB/T 6682 Analysis

3 Sample preparation and preservation

3.1 Sample Preparation Take fish eel skin, after the skin, meat, skin separation take place after the microwave heating 30s, along with fish, shrimp, eel products collected by There edible parts together into a homogeneous high-speed tissue masher, mix thoroughly, into a clean container and marked with tags. Sample preparation process must operate to prevent sample contamination or residue content change occurs. 3.2 Sample preservation The following sample stored at -18 ℃. The first method by liquid chromatography - mass spectrometry/mass spectrometry

4 Method summary

Sample residue with acetonitrile - sodium acetate buffer solution extraction, liquid-liquid partition into methylene chloride layer, neutral alumina and cationic solid phase Extraction column, eluted with electrospray ionization tandem mass spectrometry - to select the next reaction monitoring ion mode mass spectrometric quantitation and confirmation, external standard.

5 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682 regulations. 5.1 formic acid. HPLC grade. 5.2 Methanol. HPLC grade. 5.3 acetonitrile. 5.4 dichloromethane. 5.5 neutral alumina. 80 mesh to 120 mesh. 5.6 10% methanol solution of formic acid. volume of 10mL formic acid was added 90mL of methanol mix. 5.7 20% aqueous solution of diethylene glycol.200mL amount of diethylene glycol was added 800mL of water and mix. 5.8 sodium acetate buffer solution (0.1mol/L, pH = 4.5). Weigh 8.2g of anhydrous sodium acetate were dissolved in 1000mL of water, adjusted glacial acetic acid pH to 4.5. ......

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