1. Scope

1.1 This test method covers the determination of thiophene in refined benzene using gas chromatography and sulfur selective detection. The test method is applicable to the determination of thiophene at levels of 0.02 to 2 mg/kg thiophene in benzene.

1.2 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E 29.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D1193 Specification for Reagent Water

D1685 Test Method for Traces of Thiophene in Benzene by Spectrophotometry

D2359 Specification for Refined Benzene-535

D3437 Practice for Sampling and Handling Liquid Cyclic Products

D4734 Specification for Refined Benzene-545

D4735 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography

D5871 Specification for Benzene for Cyclohexane Feedstock

D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E1510 Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs

Keywords

atomic emission detector; benzene; chemiluminescence detector; gas chromatography; pulsed flame photometric detector; sulfur; thiophene; Gas chromatography (GC); Refined benzene; Sulfur selective detection; Thiophene content;

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

DOI: 10.1520/D7011-04

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