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BS EN 12177:2022

BS EN 12177:2022

$102.76

Liquid petroleum products. Unleaded petrol. Determination of benzene content by gas chromatography

Published By Publication Date Number of Pages
BSI 2022 18
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This document specifies a column switching gas chromatographic method for the quantitative determination of benzene content in the range 0,05 % (V/V) to 6 % (V/V) in unleaded petrol having a final boiling point not greater than 220 °C. The method described in this document is suitable for determining benzene in petrol, including petrol containing oxygenates up to E10 (up to 3,7 % (m/m) oxygen content), in line with the relevant EC Directives [1]. NOTE For the purposes of this document, the terms “% (V/V)” and “% (m/m)” are used to represent respectively the volume fraction and the mass fraction. WARNING – Use of this document might involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
7 5 Reagents and materials
6 Apparatus
8 7 Sampling
9 8 Procedure
8.1 Setup of the apparatus
8.1.1 General
8.1.2 Carrier gas
8.2 Calibration
8.3 Determination of density
8.4 Preparation of test sample
10 8.5 Introduction of test portion
8.6 Examination of the chromatogram
9 Calculation
9.1 Calculation of mass of benzene in the test sample
9.2 Calculation of volume of benzene in the test sample
9.3 Calculation of volume of test sample
11 9.4 Calculation of benzene content as % (V/V)
10 Expression of results
11 Precision
11.1 General
11.2 Repeatability, r
11.3 Reproducibility, R
12 12 Test report
13 Annex A (informative)Guidance on the column switching technique
A.1 Introduction
14 A.2 General apparatus parameters for the flow switching technique
A.3 Gas chromatogram

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BS EN 12177:2022
$102.76