GB/T 22146-2008 English PDF

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GB/T 22146-2008: Determination of roxarsone in animal feeds. 200 High performance liquid chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22146-2008	139	Add to Cart	3 days	Determination of roxarsone in animal feeds. 200 High performance liquid chromatography	Valid

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Basic data

Standard ID: GB/T 22146-2008 (GB/T22146-2008)
Description (Translated English): Determination of roxarsone in animal feeds. 200 High performance liquid chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B46
Classification of International Standard: 65.120
Word Count Estimation: 6,673
Date of Issue: 2008-06-27
Date of Implementation: 2008-10-01
Quoted Standard: GB/T 6682; GB/T 14699.1
Regulation (derived from): National Standard Approval Announcement 2008 No.11 (Total No.124)
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 determination of the content of roxarsone in feed by HPLC. This standard applies to feed, concentrated feed and feed additive premix roxarsone measured. This standard limit of quantification is 5 mg/kg.

GB/T 22146-2008: Determination of roxarsone in animal feeds. 200 High performance liquid chromatography

---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 roxarsone in animal feeds.200 High performance liquid chromatography ICS 65.120 B46 National Standards of People's Republic of China Determination of feed roxarsone High Performance Liquid Chromatography Posted 2008-06-27 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by the People's Republic of China Ministry of Agriculture. This standard by the National Standardization Technical Committee of the feed industry. This standard is drafted by. China Agricultural University, Ministry of Agriculture Feed potency and safety Supervision and Testing Center (Beijing). The main drafters. Zhang Liying, Wang Jinrong, Wenjun Yang, Wang Zongyi. Determination of feed roxarsone High Performance Liquid Chromatography

1 Scope

This standard specifies the determination in feed roxarsone content by high-performance liquid chromatography. This standard applies to feed, concentrated feed and feed additive Determination roxarsone premixed. The standard quantitative limit of 5mg/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 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987) GB/T 14699.1 feed samples Principle 3 As a post-extract, a composite anion-exchange column extraction, purified by reverse phase C18 column with a solution of potassium phosphate dibasic, ultraviolet Detector, based on qualitative roxarsone peak retention time than standard method for quantitative analysis.

4 Reagents and solutions

Except where noted, this standard reagents used were of analytical grade. Water is in line with GB/T 6682 two water regulations. 4.1 Methanol. chromatographically pure. 4.2 dipotassium hydrogen phosphate solution (20g/L). Weigh 20g dipotassium hydrogen phosphate (K2HPO4) dissolved in water, and dilute to 1000mL. 4.3 copper sulfate solution (100g/L). Weigh 10g of copper sulfate (CuSO4 · 5H2O) dissolved in water, and dilute to 100mL. 4.4 Solid phase extraction column eluent and the eluent 1 4.4.1 eluent. 6.80g/L sodium acetate - methanol solution. Weigh 6.80g of sodium acetate (Na2C2H3O2 · 3H2O) in a beaker, add 800mL dissolve into the water, with 10% acetic acid adjusted to pH 7, was added 53mL of methanol, dilute to 1000mL, 4 ℃ storage. 4.4.2 eluent 2. anhydrous methanol. 4.4.3 eluent. 5% methanol solution of formic acid, formic acid 5mL draw with anhydrous methanol to 100mL. 4.5 Mobile phase 4.5.1 A solution. 6.98g/L potassium dihydrogen phosphate solution containing 0.1% formic acid, weighed 6.98g potassium dihydrogen phosphate (KH2PO4) in a beaker In, dissolved in water, formic acid is added 1mL solution and dilute to 1000mL. 4.5.2 B solution. dry methanol. 4.6 Roxarsone standard solution 4.6.1 Standard stock solution. Weigh accurately roxarsone standard (content ≥99%) 500mg, placed 1000mL brown volumetric flask Dipotassium hydrogen phosphate solution (4.2) sonication to prepare a 500μg/mL standard stock solution, stored in a refrigerator at 4 ℃. 4.6.2 Standard working solution. draw stock standard solution (4.6.1) 0.2,0.4,0.6,0.8,1.0mL are brown to 50mL volumetric flask, And diluted with potassium phosphate dibasic solution (4.2) to the mark. Standard operating concentration were 2.0,4.0,6.0,8.0,10.0μg/mL of As a liquid. ......

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