HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 22989-2008 English PDF

US$399.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22989-2008: Determination of cefapirin, cephalexin, cefalonium, cefquinome residues in milk and milk powder -- LC-MS-MS method
Status: Obsolete
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 22989-2008English399 Add to Cart 3 days [Need to translate] Determination of cefapirin, cephalexin, cefalonium, cefquinome residues in milk and milk powder -- LC-MS-MS method Obsolete GB/T 22989-2008

PDF similar to GB/T 22989-2008


Standard similar to GB/T 22989-2008

GB/T 23504   GB/T 22988   GB/T 22460   GB/T 22980   GB/T 22981   GB/T 22979   

Basic data

Standard ID GB/T 22989-2008 (GB/T22989-2008)
Description (Translated English) Determination of cefapirin, cephalexin, cefalonium, cefquinome 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 10,192
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 cephapirin, cephalexin, cephalosporins CTP, Cefquinome residue liquid chromatography-tandem mass spectrometry. This standard applies to milk and milk powder cephapirin, cephalexin, determination Cefquinome residues, cephalosporin Loening. The method detection limit of standard milk: cephapirin, cephalexin, cephalosporins CTP, Cefquinome as 4. 0��g/kg, milk detection limit is: cephapirin, cephalexin, cephalosporins CTP, cephalosporin quinoline oxime 32��g/kg.

GB/T 22989-2008: Determination of cefapirin, cephalexin, cefalonium, cefquinome residues in milk and milk powder -- LC-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 cefapirin, cephalexin, cefalonium, cefquinome residues in milk and milk powder. LC-MS-MS method ICS 67.050 X04 National Standards of People's Republic of China Milk and milk powder cephalosporin aspirin, cephalexin, Determination of Luoning cephalosporin, cefquinome 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. The main drafters of this standard. Li Xuemin, female health, Caoyan Zhong, FEDERATION Qian Qing Pang Guofang. Milk and milk powder cephalosporin aspirin, cephalexin, Determination of Luoning cephalosporin, cefquinome residues Liquid chromatography - tandem mass spectrometry

1 Scope

This standard specifies the milk and milk powder cephalosporin aspirin, cephalexin, CTP, cefquinome residues in liquid chromatography - tandem mass spectrometry test methods. This standard applies to milk and milk powder cephalosporin aspirin, cephalexin, CTP, cefquinome residues determination. The method detection limit of standard milk. cephalosporin aspirin, cephalexin, CTP, cefquinome is 4.0μg/kg; milk inspection method The limit is. cephalosporin aspirin, cephalexin, CTP, cefquinome is 32μg/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 A sample of four cephalosporins residue with acetonitrile, phosphate buffer solution extraction, solid-phase extraction (SPE), liquid chromatography - tandem Mass spectrometer, external standard.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade. 4.1 Water. GB/T 6682, level. 4.2 Methanol. chromatographically pure. 4.3 acetonitrile. chromatography. 4.4 sodium dihydrogen phosphate (NaH2PO4). 4.5 Sodium hydroxide. pure class distinctions. 4.6 acetic acid. 4.7 n-hexane. 4.8 acetonitrile - water (3 + 1). Measure 60mL acetonitrile (4.3) and 20mL water mix thoroughly. 4.9 acetonitrile saturated with n-hexane. Take 100mL n-hexane (4.7) and 50mL of acetonitrile in 250mL separating funnel, shaken 1min, quiet Post-stratification discarded acetonitrile. 4.10 5mol/L sodium hydroxide solution. Weigh 20g of sodium hydroxide (4.5), dissolved in water, dilute to 100mL. 4.11 0.10mol/L sodium dihydrogen phosphate buffer solution. Weigh 12.0g sodium dihydrogen phosphate (4.4), dissolved in water, dilute to 1000mL,

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22989-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22989-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 22989-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22989-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.