GB/T 6015-2021 in English

VALID

Determination of trace dimer and residual extraction agent of butadiene for industrial use—Gas chromatographic method

Issued on:2021-08-20
Implemented on:2022-03-01
File Format:PDF
Delivery:Via email within 1~3 business days

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$156.00

Standard No:	GB/T 6015-2021
Document status:	VALID
Title in English:	Determination of trace dimer and residual extraction agent of butadiene for industrial use—Gas chromatographic method
Title in Chinese:	工业用丁二烯中微量二聚物和残留抽提剂的测定气相色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2021-08-20
Implemented on:	2022-03-01
Superseding:	GB/T 6015-1999 Butadiene for industrial use-Determination of trace dimer -Gas chromatographic method
ICS Classification:	71.080.10-Aliphatic hydrocarbons
Chinese Classification:	G15-Organic chemicals in general
Professional Classification:	GB-National Standard
Related Topics:	Determination of Diene Value by Gas Chromatography Gas Chromatography Diene Value Stable second-hand gas phase GC solvent residue Professional second-hand gas phase The most professional second-hand gas phase gas phase extraction valve injection valve injection gas phase extraction Dimerization in mass spectrometry Solvents for the determination of circular dichroism Chromatographic stationary phase Chromatographic stationary phase Typical Chromatography Gas phase extractor GC solvent residue Industrial Gas Chromatography Applications GB/T 6015-1999 Industrial Chromatography + Applications Measuring trace phases dimer Ultra Micro Gas Chromatography Column stationary phase GB/T6015-2021 GBT6015 GB/T 6015-1999 GB/T 6015-2021 Acrolein dimer for industrial use Determination method of butadiene in soil Determination of butadiene in soil

《GB/T 6015-2021工业用丁二烯中微量二聚物和残留抽提剂的测定气相色谱法》由TC63（全国化学标准化技术委员会）归口，TC63SC4（全国化学标准化技术委员会石油化学分会）执行，主管部门为中国石油和化学工业联合会。

Introduction

Analysis of core changes in the standard

Technical elements	1999 version	2021 version	Impact of changes
Scope of application	Determination of dimer only	Add extraction agent detection	Detection range expanded by 42%
Standard sample preparation	n-hexane/n-heptane solvent	Isobutane/1-butene matrix	Avoid solvent peak interference
Chromatographic conditions	Single temperature program	Second-stage programmed temperature rise	Separation efficiency increased by 35%

Detailed explanation of key detection technologies

Chromatographic system configuration

The standard requires the use of a gas chromatograph equipped with a FID detector, and two stationary phase chromatographic columns are recommended:

FFAP column: nitroterephthalic acid-modified polyethylene glycol, 3m×0.32mm
Trifluoropropyl column: 35% trifluoropropyl-methylpolysiloxane, 6m×0.32mm

Solutions to implementation difficulties

Case: Extractant adsorption problem

A petrochemical company adopted Agilent 7890B chromatograph showed a low NMP recovery rate. After investigation, it was found that the injection system was not passivated. After the pipeline was passivated with nitric acid according to the requirements of Chapter 6.4 of the standard, the recovery rate increased from 82% to 98.5%.

Standard Evolution Analysis

The 1985 version first established the method → the 1999 version optimized the separation conditions → the 2021 version achieved simultaneous detection of dimers and extractants, reflecting the development trend of my country's petrochemical analysis technology from single indicator detection to multi-component collaborative analysis.

More samples: DL/T 5154-2012 QC/T 942-2021 GB 50021-2001(2009)

Sample only — not a preview of GB/T 6015-2021