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GB/T 23873-2009 English PDF

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US$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23873-2009: Determination of maduramicin ammonium in feeds
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23873-2009	229	Add to Cart	3 days	Determination of maduramicin ammonium in feeds	Valid

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Basic data

Standard ID: GB/T 23873-2009 (GB/T23873-2009)
Description (Translated English): Determination of maduramicin ammonium in feeds
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B46
Classification of International Standard: 65.120
Word Count Estimation: 10,148
Date of Issue: 2009-05-26
Date of Implementation: 2009-10-01
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
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 maduramicin ammonium content in feed by high performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometry (LC-MS). This standard applies to feed, concentrated feed and feed additive premix. HPLC method for the quantitative determination. The limit of quantification is 1 mg/kg. LC-MS method for the qualitative determination methods. The lowest detection levels of 0. 5 mg/kg.

GB/T 23873-2009: Determination of maduramicin ammonium in feeds

---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 maduramicin ammonium in feeds ICS 65.120 B46 National Standards of People's Republic of China Determination of maduramicin ammonium in feed Posted 2009-05-26 2009-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is an informative annex. This standard by the National Feed Industry Standardization Technical Committee (SAC/TC76) and focal points. This standard was drafted. Ministry of Agriculture Feed Quality Supervision and Testing Center (Jinan). The main drafters of this standard. Liang Meng, Tang Wenli, Renai Li, Zhao Jinyi Huang Ying LEE Wing Shan, Liu Xuejiang. Determination of maduramicin ammonium in feed

1 Scope

This standard specifies the determination of maduramicin ammonium content in feed by high performance liquid chromatography (HPLC) and liquid chromatography - mass spectrometry (LC-MS). This standard applies to feed, concentrated feed and feed additive premix. HPLC method for the quantitative determination method, the limit of quantification 1mg/kg. LC-MS method for the qualitative determination of minimum detectable amount of 0.5mg/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. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 14699.1 feed samples GB/T 20195 Animal feed sample preparation

3 Sampling

3.1 sampling step. execution by GB/T 14699.1 requirements. 3.2 Preparation of samples. execution according to the provisions GB/T 20195 of.

4 HPLC method

4.1 Principle Extraction feed maduramicin ammonium with acetonitrile, evaporated extract was dissolved with acetonitrile, with on - after dimethylaminobenzaldehyde solution was subjected to column Yan Health, HPLC assay. 4.2 Reagents and materials Unless otherwise specified, use only analytical reagent. 4.2.1 Water, GB/T 6682, level. 4.2.2 Methanol. chromatographically pure. 4.2.3 acetonitrile. chromatography. 4.2.4 tetrahydrofuran. chromatography. 4.2.5 potassium dihydrogen phosphate. pure class distinctions. 4.2.6 Phosphate. pure class distinctions. 4.2.7 - dimethylaminobenzaldehyde. 99%. 4.2.8 sulfuric acid. pure class distinctions. 4.2.9 Phosphate - potassium dihydrogen phosphate buffer solution (pH3.0). Weigh accurately 2.04g of potassium dihydrogen phosphate (4.2.5), add 900mL water dissolved, Plus phosphate (4.2.6) several drops of pH was adjusted to 3.0 and transferred to 1000mL volumetric flask to volume with water, shake. 4.2.10 Mobile phase. phosphate - potassium dihydrogen phosphate buffer solution (4.2.9) + tetrahydrofuran (4.2.4) + methanol (4.2.2) = 100 + 40 + 860. 4.2.11 to - dimethylaminobenzaldehyde derivatized solution. Accurately weigh 16g of - dimethylaminobenzaldehyde (4.2.7) in 1000mL brown Vial, was added 400mL of methanol (4.2.2), stirring until completely dissolved on a magnetic stirrer, the sulfuric acid was added dropwise 8mL (4.2.8), and continue stirring until homogeneous solution was cooled to room temperature, provided with 24h. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 23873-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23873-2009_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 23873-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23873-2009_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 Sales@ChineseStandard.net. 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.