Path:
Home >
GB/T >
Page618 > GB/T 44740-2024
Price & Delivery
US$189.00 · In stock · Download in 9 secondsGB/T 44740-2024: Determination of chlorphenamine and bromphenamine in feeds - Liquid chromatography-tandem mass spectrometry
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 44740-2024 | English | 189 |
Add to Cart
|
3 days [Need to translate]
|
Determination of chlorphenamine and bromphenamine in feeds - Liquid chromatography-tandem mass spectrometry
|
Click to Preview a similar PDF
Basic data
| Standard ID | GB/T 44740-2024 (GB/T44740-2024) |
| Description (Translated English) | Determination of chlorphenamine and bromphenamine in feeds - Liquid chromatography-tandem mass spectrometry |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B46 |
| Classification of International Standard | 65.120 |
| Word Count Estimation | 9,975 |
| Date of Issue | 2024-10-26 |
| Date of Implementation | 2025-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44740-2024: Determination of chlorphenamine and bromphenamine in feeds - Liquid chromatography-tandem mass spectrometry
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44740-2024
Determination of chlorphenamine and bromphenamine in feeds - Liquid chromatography-tandem mass spectrometry
Determination of chlorpheniramine and brompheniramine in feed
Liquid chromatography-tandem mass spectrometry
Determination of chlorphenamine and bromphenamine in feeds-
Liquid chromatography﹘tandem mass spectrometry
ICS 65.120
CCS B 46
National Standard of the People's Republic of China
Released on October 26, 2024
Implementation on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Feed Industry Standardization Technical Committee (SAC/TC 76).
This document was drafted by. Institute of Agricultural Quality Standards and Testing Technology, Chinese Academy of Agricultural Sciences.
The main drafters of this document are. Suo Decheng, Fan Xia, Guan Xin, Feng Yuchao, Xiao Zhiming, Wang Keran, Lu Liping, Wu Hongkai, Zhang Hangjun,
Tang Jian.
Determination of chlorpheniramine and brompheniramine in feed
Liquid chromatography-tandem mass spectrometry
1 Scope
This document describes a method for the determination of chlorpheniramine and brompheniramine in feed by liquid chromatography-tandem mass spectrometry.
This document applies to chlorpheniramine in compound feeds, concentrated feeds, concentrate supplements, additive premixes and mixed feed additives.
Determination of pheniramine and brompheniramine.
The detection limit of this document is 0.003 mg/kg and the quantification limit is 0.01 mg/kg.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the latest version (including all amendments) applies to this document.
In this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 20195 Preparation of animal feed samples
3 Terms and Definitions
There are no terms or definitions that require definition in this document.
4 Principles
The analytes in the sample were extracted with formic acid and acetonitrile solution, cleaned up by mixed strong cation exchange solid phase extraction cartridge, and then purified by liquid chromatography-tandem mass spectrometry.
The samples were determined by spectrometer, calibrated by matrix-matched standard curve, and quantified by external standard method.
5 Reagents or materials
Unless otherwise specified, only analytical grade reagents were used.
5.1 Water. GB/T 6682, Grade 1.
5.2 Formic acid. chromatographically pure.
5.3 Methanol. chromatographic grade.
5.4 Acetonitrile. chromatographic grade.
5.5 0.1% formic acid solution. Pipette 1 mL of formic acid (5.2), dilute to 1000 mL with water, and mix thoroughly.
5.6 1% Formic Acid x Acetonitrile Solution. Pipette 1 mL of formic acid, dilute to 100 mL with acetonitrile, and mix thoroughly.
5.7 5% ammonia x methanol solution. Take 5 mL of ammonia water, dilute to 100 mL with methanol, and mix thoroughly.
5.8 Chlorpheniramine standard stock solution (500 μg/mL). Weigh chlorpheniramine (CAS No.. 132﹘22﹘9, purity ≥98%).
25 mg, accurate to 0.01 mg, dissolve in acetonitrile, transfer to a 50 mL volumetric flask, make up to volume, and shake well. Store below -18°C. The expiration date is not
More than 6 months, or using standard substances/standard samples.
5.9 Brompheniramine standard stock solution (500 μg/mL). Weigh brompheniramine (CAS number. 86﹘22﹘6, purity ≥98%).
...
