SH/T 1492-2020 in English

VALID

1-Butene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method

Issued on:2020-12-19
Implemented on:2021-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $190.00
$185.00

Standard No:	SH/T 1492-2020
Document status:	VALID
Title in English:	1-Butene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method
Title in Chinese:	工业用1-丁烯纯度及烃类杂质的测定气相色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-12-19
Implemented on:	2021-04-01
Professional Classification:	SH-Petrochemical
Related Keywords:	gas injection valve chromatographic method introduction analysis nitrogen key instrument configuration requirements chromatographic system standard sample determination new ≥10ml/m³ detection requirements carrier gas type hydrogen changed
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本标准规定了用气相色谱法测定工业用1-丁烯的纯度及其烃类杂质含量。
本标准适用于纯度不小于99.00% (质量分数)，丙烷、丙烯、异丁烷、正丁烷、乙炔、反-2-丁烯、异丁烯、顺-2-丁烯等烃类杂质含量不小于0.001%（质量分数），丙二烯、丙炔含量不小于2mL/m3，1,3-丁二烯含量不小于10 mL/m3或0.001%（质量分数）的工业用1-丁烯试样的测定。

Introduction

Analysis of Standard Technology Evolution

Version Comparison Dimensions	2004 Edition	2020 Edition
Standard Integration	SH/T 1492 and 1548 are Separate	The Two Standards Are Merged and Unified
Detection Scope	1,3-Butadiene is Not Included	New ≥10mL/m³ Detection Requirements
Carrier Gas Type	Hydrogen	Changed to Nitrogen

Key instrument configuration requirements

Chromatographic system needs to be configured:

Al₂O₃ PLOT capillary column (0.32/0.53mm inner diameter)
Flame ionization detector (FID)
Liquid injection valve (0.5μL quantitative tube) or gas injection valve (0.25mL quantitative tube)

Key points of method implementation

Operation process of correction area normalization method

Standard sample determination to obtain relative mass correction factors of each component (the difference between two measurements is ≤5%)
The sample is injected twice in parallel
The impurity content is calculated according to the formula:
w_i = (A_if_i/ΣA_if_i) × (100.00 - w₀)

Quality control requirements

Regularly analyze certified standards (frequency ≥1 time/month)
Chromatographic column performance verification (separation ≥1.5)
Repeatability control:

Impurity≤0.01% RSD≤20%

Purity≥99% Absolute difference ≤ 0.04%

More samples: GB 18306-2015 YD/T 3934-2021 DL/T 368-2010

Sample only — not a preview of SH/T 1492-2020

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