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GB/T 28643-2012 English PDF

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US$799.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 28643-2012: Determination of PCDD/Fs and dioxin-like PCBs in feeds -- Isotope dilution HRGC/HRMS
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28643-2012	799	Add to Cart	6 days	Determination of PCDD/Fs and dioxin-like PCBs in feeds -- Isotope dilution HRGC/HRMS	Valid

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Basic data

Standard ID: GB/T 28643-2012 (GB/T28643-2012)
Description (Translated English): Determination of PCDD/Fs and dioxin-like PCBs in feeds -- Isotope dilution HRGC/HRMS
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B46
Classification of International Standard: 65.120
Word Count Estimation: 36,330
Quoted Standard: GB/T 5009.205-2007; GB/T 6682; GB/T 8170; GB/T 14699.1; GB/T 20195
Regulation (derived from): National Standards Bulletin 2012 No. 17
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 use isotope dilution high resolution gas chromatography/high resolution mass spectrometry feed 17 kinds of 2, 3, 7, 8 chlorine substituted polychlorinated dibenzo- dioxins (PCDDs) and polychlorinated two benzo furan (PCDFs) (he

GB/T 28643-2012: Determination of PCDD/Fs and dioxin-like PCBs in feeds -- Isotope dilution HRGC/HRMS

---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 PCDD/Fs and dioxin-like PCBs in feeds. Isotope dilution HRGC/HRMS ICS 65.120 B46 National Standards of People's Republic of China Determination feeds two British and two   British like polychlorinated Isotope Dilution - High Resolution Gas Chromatography/High Resolution Mass Spectrometry Issued on. 2012-07-31 2012-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard reference 1613B (Tetra-throughocta-chlorinateddiox- US UNEP (USEPA) promulgated insandfuransbyisotopedilutionHRGC/HRMS, 1997) and 1668A (Chlorinatedbiphenylcongenersin water, soil, sediment, andtissuebyHRGC/HRMS, 1999) method, as well as "EU classification and feed of Two  British and two  dioxins PCBs limits "(Directive2002/32/EC, lastamendedin3February2006) files. Grease sample two  English and English-like polychlorinated biphenyls determination of titanium  reference GB/T 5009.205-2007 "British food and the like in two  Determination of toxicity equivalents. " This standard by the National Feed Industry Standardization Technical Committee (SAC/TC76) centralized. This standard was drafted. Research Center for Eco-Environmental Sciences, Agricultural Quality Standards and Technology Research Institute of Chinese Academy of Agricultural Sciences [National Feed Quality Supervision and Inspection Center (Beijing)], the National Environmental Analysis and Testing Center, Dalian Institute of Chemical Physics. The main drafters. Zhang Qinghua, Yang Shuming, Liu Aimin, Niyu Wen, Pu, Li Lan, Jia Zheng, Li Yingming. Determination feeds two British and two   British like polychlorinated Isotope Dilution - High Resolution Gas Chromatography/High Resolution Mass Spectrometry

1 Scope

This standard specifies the isotope dilution - High Resolution Gas Chromatography/High Resolution Mass Spectrometry substituted 2,3,7,8-chlorine feed of 17's Polychlorinated dibenzodioxins  English (PCDDs) and polychlorinated dibenzofurans (PCDFs) (hereinafter referred to as PCDD/Fs) and 12 kinds of two  English class Polychlorinated biphenyls (DL-PCBs) (see Table A.1 and A.2) method. This standard applies to feed materials, compound feed, concentrated feed, concentrate supplementary materials, pre-mixed feed additives and feed additives. The standard method of analysis of the feed PCDD/Fs and DL-PCBs detection limits in Table B.1.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 5009.205-2007 foods - Determination of titanium  British and the like TEQ Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment GB/T 14699.1 feed samples GB/T 20195 Animal feed sample preparation Principle 3 Application of Accelerated Solvent Extraction and Soxhlet extraction technology to extract samples of PCDD/Fs and DL-PCBs, the extract through silica compound Columns, and other basic alumina column packed column purified and concentrated by high resolution gas chromatography/high resolution mass spectrometry analysis and detection, isotope dilute Quantitative interpretation; multiplying the measured content in accordance with the TEF for each target compound (TEF) accumulation, the sample is calculated PCDD/Fs And DL-PCBs toxic equivalent (TEQ).

4 Reagents and materials

Unless otherwise specified, use the pesticide residue level (pesticideresidue) reagent in the analysis and in line with GB/T 6682 provided a Water. 4.1 n-hexane. 4.2 dichloromethane. 4.3 toluene. 4.4 nonane. 4.5 Concentrated sulfuric acid (excellent pure). 4.6 Sodium hydroxide (excellent pure). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 28643-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 28643-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 28643-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 28643-2012_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.