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GB/T 22967-2008: Determination of β-estradiol residues in milk and milk powder -- Gas chromatography-negative-ion chemical ionization mass spectrometry method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22967-2008 | English | 229 |
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Determination of β-estradiol residues in milk and milk powder -- Gas chromatography-negative-ion chemical ionization mass spectrometry method
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GB/T 22967-2008
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Basic data | Standard ID | GB/T 22967-2008 (GB/T22967-2008) | | Description (Translated English) | Determination of ��-estradiol residues in milk and milk powder -- Gas chromatography-negative-ion chemical ionization mass spectrometry method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 10,117 | | Date of Issue | 2008-12-31 | | Date of Implementation | 2009-05-01 | | 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 ��- estradiol residues in gas chromatography-negative chemical ionization mass spectrometry. This standard applies to the determination of milk and milk powder ��- estradiol residues. This standard method detection limit: Milk 0 25 ��g/kg, milk 2 ��g/kg. | GB/T 22967-2008: Determination of β-estradiol residues in milk and milk powder -- Gas chromatography-negative-ion chemical ionization mass spectrometry method
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Determination of β-estradiol residues in milk and milk powder. Gas chromatography-negative-ion chemical ionization mass spectrometry method
ICS 67.050
X04
National Standards of People's Republic of China
Determination of milk and milk powder β- estradiol residues
Gas chromatography - negative chemical ionization 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 is an informative annex.
This standard is proposed and managed by the State Administration of Quality Supervision, Inspection and Quarantine.
This standard was drafted. People's Republic of China Qinhuangdao Exit Inspection and Quarantine, People's Republic of China Shandong Entry-Exit Inspection and
Quarantine Bureau.
The main drafters of this standard. Wang Jianhua, Zhang Yibing, Guo Cui, Wang Tong environment, Sun Zhongsong, Pang Guofang.
Determination of milk and milk powder β- estradiol residues
Gas chromatography - negative chemical ionization mass spectrometry
1 Scope
This standard specifies the milk and milk powder β- estradiol residues in gas chromatography - negative chemical ionization mass spectrometry.
This standard applies to the determination of milk and milk powder β- estradiol residues.
The standard method detection limit. milk 0.25μg/kg, milk 2μg/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
Milk and milk powder estradiol after enzymatic hydrolysis with acetonitrile as the extraction and extraction agent, protein precipitant, solid-phase extraction column purification,
After acylation derivatized by gas chromatography - negative chemical ionization mass spectrometry and selected ion monitoring mode measurement, internal standard.
4 Reagents and materials
Unless otherwise specified, reagents were of analytical grade water as a water GB/T 6682 regulations.
4.1 β- glucuronidase/arylsulfatase glucosidase. Helixpomatia, per ml β- glucuronidase 100000 units per ml of sulfuric acid
Esterase ≤1000 units.
4.2 Methanol. chromatographically pure.
4.3 acetonitrile. chromatography.
4.4 ethyl acetate. chromatography.
4.5 hexane. chromatographically pure.
4.6 pyridine. chromatography.
4.7 isooctane. chromatography.
4.8 n-propanol. AR.
4.9 Derivatization reagent. pentafluoro benzoyl chloride, in the dark, damp environment frozen storage.
4.10 sodium bicarbonate.
4.11 sodium acetate trihydrate.
4.12 sodium chloride.
4.13 0.1% acetic acid solution. Pipette 0.1mL of glacial acetic acid, water volume 100mL.
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