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GB/T 22986-2008: Determination of prednisolone residues in milk and milk powder -- LC-MS-MS method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22986-2008 | English | 209 |
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Determination of prednisolone residues in milk and milk powder -- LC-MS-MS method
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GB/T 22986-2008
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PDF similar to GB/T 22986-2008
Basic data | Standard ID | GB/T 22986-2008 (GB/T22986-2008) | | Description (Translated English) | Determination of prednisolone residues in milk and milk powder -- LC-MS-MS method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 9,998 | | 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 residues prednisolone liquid chromatography-tandem mass spectrometry. This standard applies to the determination of milk and milk powder prednisolone residues. This standard method detection limit: milk 0. 5��g/kg, milk is 4. 0��g/kg. | GB/T 22986-2008: Determination of prednisolone residues in milk and milk powder -- LC-MS-MS method
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Determination of prednisolone residues in milk and milk powder. LC-MS-MS method
ICS 67.050
X04
National Standards of People's Republic of China
Determination of milk and milk powder prednisolone Residues
Liquid chromatography - tandem 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 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, Inner Mongolia Mengniu Dairy (Group) Co., Ltd.
The main drafters of this standard. Pan Guoqing, Baiguo Tao, ZHANG Chun-yan, Liu Lai Jun, Zheng Book Fair, Li, Zhang, Li, Chang army, Pang Guofang.
Determination of milk and milk powder prednisolone Residues
Liquid chromatography - tandem mass spectrometry
1 Scope
This standard specifies the milk and milk powder prednisolone residues liquid chromatography - tandem mass spectrometry.
This standard applies to the determination of milk and milk powder prednisolone residues.
The standard detection limit. milk 0.5μg/kg, milk was 4.0μg/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)
3 PRINCIPLE OF THE METHOD
Sample of prednisolone with methanol - acetic acid buffer solution extracted with n-hexane in addition to fat, solid-phase extraction (SPE), liquid chromatography - tandem mass
Spectrometer, external standard, selected ion qualitative.
4 Reagents and materials
Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682 regulations.
4.1 Methanol. chromatographically pure.
4.2 formic acid. Chromatographic pure.
4.3 hexane. chromatographically pure.
4.4 glacial acetic acid.
4.5 sodium acetate trihydrate.
4.6 0.2mol/L acetic acid solution. lessons 5.72mL glacial acetic acid (4.4) to 500mL volumetric flask with water to volume.
4.7 0.2mol/L sodium acetate solution. Weigh 27.22g sodium acetate trihydrate (4.5), transfer dissolved in water to 1000mL volumetric flask,
Water to volume.
4.8 acetic acid - sodium acetate buffer solution (pH = 5.2). Measure 21mL of acetic acid solution (4.6) and the 79mL solution of sodium acetate (4.7) were mixed,
Adjusting the solution pH = 5.2.
4.9 30% aqueous solution of methanol. Measure 30mL of methanol (4.1), diluted with water volume to 100mL.
4.10 methanol saturated with n-hexane. amount of methanol (4.1) 10mL placed in a separatory funnel, add n-hexane (4.3) 90mL, and mixed by shaking
1min, standing stratification, the upper liquid reserve.
4.11 prednisolone standards. purity of greater than 99%.
4.12 prednisolone standard stock solution. Weigh accurately prednisolone standard, dubbed 0.10mg/mL standard with methanol (4.1)
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