GB/T 34270-2017 in English

VALID

Determination of polychorinated biphenyls and hexachlorobenzene in feeds--Gas chromatography

Issued on:2017-09-07
Implemented on:2018-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 34270-2017
Document status:	VALID
Title in English:	Determination of polychorinated biphenyls and hexachlorobenzene in feeds--Gas chromatography
Title in Chinese:	饲料中多氯联苯与六氯苯的测定气相色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-09-07
Implemented on:	2018-04-01
ICS Classification:	65.120-Animal feeding stuffs
Chinese Classification:	B46-Livestock and poultry feed and additive
Professional Classification:	GB-National Standard
Related Keywords:	gas chromatography method gas chromatography column gas chromatography introduction sensitive gas chromatography-electron capture detector polychorinated biphenyls
Related Topics:	PCBs PCBs in Feed PCTs Feed PCBs PCBs Dichlorobenzene Gas Chromatography Chloraniline colorimetric method Liquid Chromatography Benzene Method PCB4 Total PCB detection method Determination of hexachlorobenzene in water Determination of Aniline in Water by Gas Chromatography polychlorinated terphenyl Determination of Dichlorobenzene by Gas Chromatography Determination of polychlorinated naphthalenes by gas chromatography iso+ PCBs Determination method of polychlorinated terphenyls in plastics and their products by gas chromatography PCB restrictions Standard detection method for polychlorinated biphenyls Air benzene colorimetric method PCB detection gc-ms polychlorinated biphenyls in water Gas Chromatography Columns Benzene gas phase detection method Multi-chromatographic coupling Hexachlorobenzene + chromatographic peak Acid Chloride Gas Chromatography PCBs in fats and oils Gas phase detection of benzene PCB rapid detection PCB quick indicator Chlorine vs. gas phase ecd Detection of PCBs Polychlorinated biphenyls and polychlorinated biphenyls Determination of polychlorinated biphenyls in water by gas chromatography-mass spectrometry Non-PCB Chromatography of Benzene and Naphthalene Benzene and naphthalene in chromatography Mass spectrometric analysis of chlorobenzene iso PCBs PCB Gas Chromatograph PCB detection method Detection of Polychlorinated Biphenyls by Gas Chromatography Determination of hexachlorobenzene GB/T 34270-2017 Benzene gas phase detection method Vapor Phase Chlorobenzene Gas phase test for biphenyl Gas chromatographic analysis of benzene series Benzene and chlorinated benzene detection Standard analytical method for polychlorinated biphenyls Chlorobenzene liquid phase PCBs by Gas Chromatography Gas chromatographic peak height and Chlorine + gas phase feed hexachlorobenzene Determination of water quality 1,2-dichlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene by gas chromatography The peak of benzene in the mass spectrum Chloroform Gas Chromatography PCB detection method Determination of Homologues of Benzene by Gas Chromatography Gas Chromatography Mass Spectrometry Hexachlorobenzene 12 kinds of polychlorobenzene Chromatographic benzene time 666 liquid chromatography mass spectrometry Water organochlorine gas chromatography PCB laws Naphthalene and Benzene Gas Chromatography PCB sampling PCBs + Sampling Chlorinated biphenyls Biphenyl chloride Determination of Benzene Series by Gas Chromatography Gas phase determination method of benzene series The peak of toluene in deuterated chloride Benzene chromatography time Multi-Detector Gas Chromatography gas chromatography infrared PCB how much Soil PCB detection method Portable PCB detector Restrictions on PCBs Vapor Phase PCBs PCB coplanar Determination of Benzene Series by Gas Chromatography Determination of Chlorobenzenes in Water Quality by Gas Chromatography Chromatographic Feed Analysis Chlorobenzene gas phase standard gas phase hexachlorobenzene sample Chromatography of number six Determination method of benzene series by gas chromatography Detection of Polychlorinated Biphenyls by Gas Chromatography and Mass Spectrometry Determination of chlorobenzene in Benzene and Benzene Homologues by Gas Chromatography Detection method of polychlorinated biphenyls Detection of Chlorobenzene in Gas Phase Transformer PCBs Hexachlorobenzene detection Hexachlorobenzene in water Hexachlorobenzene Mass Spectrometry Gas phase detection of dichlorobenzene Gas Chromatography of Benzene Series in Air PCB Separation Gas Chromatograph PCBs Gas Chromatography and TLC PCBs in paint Oxygen in energy spectrum Portable Gas Chromatography Benzene Toluene Determination of polychlorinated biphenyl content in electrical insulating oil by gas chromatography PCB Gas Chromatography-Electron Capture Detector Method Determination of polychlorinated biphenyl content in electrical insulating oil by gas chromatography PCB Detection Gas Chromatography Chlorobenzene mass spectrometry Determination of Benzene Series in Air by Gas Chromatography liquid chromatographic detection of feed How to Detect PCBs Detection method of mellitic acid Determination of Benzene Series in Water by Gas Chromatography Calculations Related to Chromatography Feed Chromatography Detection of hexachlorobenzene by gas phase method Air Aniline Gas Chromatography Determination of hexachlorobenzene in water Organochlorine Gas Chromatography Chlorine gas detector PCB organochlorine Benzene gas chromatography Benzene gas chromatography method Determination method of benzene series in paint Electronic PCBs GBT34270 GB/T 34270-2017 PCB detection standard Feed Chloride Determination Method Tetrachlorobiphenyl Benzene gas chromatography The role of sodium chloride in gas chromatography Six major systems of gas chromatograph ECD and FPD in the gas phase The method of measuring benzene series in water by GC-MS is Chlorobenzene liquid phase detection method Gas chromatography method for determination of benzene in exhaled breath Fluorobenzene gas chromatography detection method EU Determination Method for Polychlorinated Biphenyls Manual detection of chlorobenzene PCB limits Hexachlorobenzene content in food PCB pretreatment method ion chromatography Hexachlorobenzene content Methods and characteristics of polychlorinated biphenyls Decachlorobiphenyl detection method What are the testing methods for polychlorinated terphenyls? Division of dry and wet chlorobenzene Method for determination of benzene series by portable gas chromatography Exhaust gas chlorobenzene test PCB gas phase detection method Determination method for polychlorinated biphenyls PCB standard curve Method for determination of polychlorinated biphenyls National standard for detection of chromatographic grade benzene Detection method of gas phase petroleum ether and benzene Chlorobenzene Thin Layer Chromatography Method Determination of biphenyl chloromethyl Hexachlorobenzene gas quality determination method

《GB/T 34270-2017饲料中多氯联苯与六氯苯的测定气相色谱法》由TC76（全国饲料工业标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

1. Background of standard formulation and analysis of technological evolution

This standard GB/T 34270-2017 "Gas chromatography method for the determination of polychlorinated biphenyls and hexachlorobenzene in feed" was formulated based on internationally accepted detection methods and combined with China's national conditions. Its main purpose is to standardize the detection process of toxic and hazardous substances in feed to ensure animal food safety and human health.

In terms of technological evolution, this standard adopts a high-efficiency and sensitive gas chromatography-electron capture detector (ECD) combination to replace the traditional spectrophotometry. This improvement significantly improves the detection sensitivity and accuracy, and can meet the detection needs of trace contaminants in feed.

2. Detection principles and methods

This standard specifies two extraction methods: Soxhlet extraction and rapid solvent extractor (ASE) extraction. Both methods are suitable for different types of feed samples, and the specific choice depends on the laboratory equipment conditions.

Gas chromatography-electron capture detector (ECD) is the core analytical instrument of this standard. Its working principle is: after the polychlorinated biphenyls and hexachlorobenzene in the sample are extracted and purified, they are separated on the gas chromatography column, and the target compounds are detected by the high sensitivity of ECD, and quantified by the external standard method.

The key steps of this method include sample preparation, extraction, purification and chromatographic analysis. Among them, the purification process adopts the concentrated sulfuric acid sulfonation method to ensure that the organic phase is colorless, thereby improving the detection efficiency.

3. Comparison table of standard frameworks

Standard items	Scope of application	Detection limit (μg/kg)	Quantification limit (μg/kg)	Detection limit
GB/T 34270—2017	Compound feed, concentrated feed, etc.	0.5~2	2	0.5~μg/kg

4. Implementation suggestions

In actual testing, it is recommended to give priority to the rapid solvent extractor (ASE) extraction method because it is easy to operate and more efficient. For small-scale laboratories, Soxhlet extraction is still a reliable choice.

Instrument calibration is a key link to ensure accurate test results. It is recommended to regularly maintain the gas chromatography column and ECD and calibrate them with standard substances.

More samples: GB 18306-2015 DL/T 368-2010 JJG 21-2008

Sample only — not a preview of GB/T 34270-2017

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