GB/T 22979-2008 English PDF

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GB/T 22979-2008: Determination of boscalid residues in milk and milk powder -- GC-MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22979-2008	209	Add to Cart	3 days	Determination of boscalid residues in milk and milk powder -- GC-MS method	Valid

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Basic data

Standard ID: GB/T 22979-2008 (GB/T22979-2008)
Description (Translated English): Determination of boscalid residues in milk and milk powder -- GC-MS method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 9,916
Date of Issue: 2008-12-31
Date of Implementation: 2009-05-01
Quoted Standard: GB/T 6379.1; GB/T 6379.2; GB/T 6682
Regulation (derived from): National Standard Approval Announcement 2008 No.26 (Total No.139)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the milk and milk powder boscalid residue gas chromatography-mass spectrometry. This standard applies to milk and milk acid bacteria measured in pyridine amine residues. This standard method detection limit: milk 0. 010mg/kg, milk is 0. 080mg/kg.

GB/T 22979-2008: Determination of boscalid residues in milk and milk powder -- GC-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 boscalid residues in milk and milk powder. GC-MS method ICS 67.050 X04 National Standards of People's Republic of China Milk and milk powder Boscalid measured amine residues Gas chromatography - mass spectrometry Posted 2008-12-31 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The Standard Appendix A, Appendix B are informative appendices. This standard is proposed and managed by the State Administration of Quality Supervision Inspection and Quarantine of People's Republic of China. This standard was drafted. People's Republic of China Qinhuangdao Exit Inspection and Quarantine, Inner Mongolia, People's Republic of China Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Pan Guoqing, ZHANG Chun-yan, Baiguo Tao, Zheng Book Fair, to Liu Jun, Li, Zhang Wei, Pang Guofang. Milk and milk powder Boscalid measured amine residues Gas chromatography - mass spectrometry

1 Scope

This standard specifies the milk and milk powder boscalid residues by gas chromatography - mass spectrometry. This standard applies to milk and milk powder Boscalid measured amine residues. The standard detection limit. milk 0.010mg/kg; milk was 0.080mg/kg.

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. GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions (GB/T 6379.1-2004, ISO 5725-1.1994, IDT) GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) Principle 3 Sample of boscalid extracted with acetonitrile extract by salting, centrifugation, concentration and solvent exchanged by gel permeation chromatography, eluted with Gas chromatography - mass spectrometer, external standard.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682 regulations. 4.1 acetonitrile. chromatography. 4.2 ethyl acetate. chromatography. 4.3 Cyclohexane. chromatography. 4.4 anhydrous sodium. 650 ℃ burning 4h, cooled in a desiccator to room temperature and stored in a sealed bottle aside. 4.5 sodium chloride. 4.6 ethyl acetate - cyclohexane. ethyl acetate (4.2) and cyclohexane (4.3) were mixed according to 1.1 volume ratio. 4.7 boscalid standard. purity of greater than 98%. 4.8 boscalid standard stock solution. Weigh accurately a certain amount of boscalid standard with ethyl acetate - (4.6) dubbed cyclohexane solution Standard stock solution 0.10mg/mL, and stored in the dark at 4 ℃. 4.9 boscalid standard solution. draw the right amount of boscalid standard stock solution as needed, using ethyl acetate - cyclohexane (4.6) into a standard working solution by diluting the appropriate concentration, at 4 ℃ stored. 4.10 Boscalid amine-standard working solution. to draw an appropriate amount of boscalid standard working solution as needed, with a negative sample extract with Having a concentration in the range of 0.010μg/mL ~ 0.50μg/mL series matrix of standard working solution, and the solution should be using now. 4.11 Membrane. 0.2μm. ......

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