ASTM D6166-12 (2022) PDF

Full title and description

ASTM D6166-12 (2022) — Standard Test Method for Determination of the Presence of Benzene in Liquid Hydrocarbon Fuels by Gas Chromatography Using a Flame Ionization Detector (GC-FID). This standard describes a gas chromatographic procedure with flame ionization detection for identifying and quantifying benzene in gasoline and other liquid hydrocarbon fuels at low concentration levels.

Abstract

ASTM D6166 provides a laboratory method for the determination of benzene content in liquid hydrocarbon fuels using gas chromatography with flame ionization detection (GC‑FID). The procedure covers sample preparation, chromatographic conditions, calibration, and calculation of benzene concentration. It is intended for routine quality control and regulatory compliance testing where GC‑FID is appropriate and benzene concentrations are in the method's measurable range.

General information

• Status: Active (reapproved and editorially updated in 2022)
• Publication date: Original designation 2012; reapproved/updated 2022
• Publisher: ASTM International
• ICS / categories: 75.160 (Petroleum products and related technologies); Chemical analysis
• Edition / version: Designation D6166-12 with 2022 reapproval
• Number of pages: Typically a short method (approximately 6–10 pages, depending on publisher formatting)

Scope

This standard specifies a gas chromatographic method using a flame ionization detector to determine benzene in liquid hydrocarbon fuels such as gasoline. It defines suitable chromatographic columns, carrier gases, temperature programs, sample introduction, calibration approaches, detection limits, and procedures for reporting results. The method is intended for samples where matrix interferences are manageable by the specified separation and where GC‑FID sensitivity is adequate for the benzene concentrations of interest.

Key topics and requirements

• Gas chromatographic separation conditions (column type, dimensions, stationary phase)
• Flame ionization detector operating parameters and optimization
• Sample preparation and handling to avoid benzene losses or contamination
• Calibration procedures using benzene standards and internal standard techniques
• Limits of detection and quantification, precision, and accuracy statements
• Calculation and expression of results (mass or volume percent, concentration units)
• Quality control measures, blank checks, and chromatographic resolution requirements

Typical use and users

Used by fuel testing laboratories, refineries, environmental and regulatory agencies, and quality control groups to determine benzene levels in gasoline and other liquid fuels. Analysts performing routine compliance testing or research on fuel composition will apply this method when GC‑FID is preferred or when instrument availability excludes mass spectrometric detectors.

Related standards

Related methods for benzene determination and fuel analysis include gas chromatographic methods with mass spectrometric detection, other ASTM fuel standards covering hydrocarbon composition and aromatic content, and regional regulatory test methods for benzene in fuels and air. Complementary standards address sample handling, calibration gas preparation, and performance verification for chromatographic systems.

Keywords

benzene; gasoline; liquid hydrocarbon fuels; GC-FID; gas chromatography; fuel analysis; calibration; detection limit; ASTM D6166

FAQ

Q: What is this standard?

A: ASTM D6166-12 (reapproved/updated 2022) is a test method that specifies the determination of benzene in liquid hydrocarbon fuels using gas chromatography with a flame ionization detector.

Q: What does it cover?

A: It covers chromatographic conditions, detector settings, sample preparation, calibration, calculation of benzene concentration, and quality control procedures suitable for measuring benzene in gasoline and similar fuels.

Q: Who typically uses it?

A: Fuel testing laboratories, refinery laboratories, environmental and regulatory agencies, and quality control personnel who need to quantify benzene in fuel samples using GC‑FID.

Q: Is it current or superseded?

A: The designation D6166-12 was originally issued in 2012 and has a reapproval/updated indication for 2022. Users should confirm the latest ASTM catalog for any newer revisions or superseding documents.

Q: Is it part of a series?

A: It is part of ASTM's collection of petroleum and hydrocarbon fuel test methods and is related to other standards that address aromatic content, benzene determination by alternative detectors, and general fuel composition analyses.

Q: What are the key keywords?

A: Benzene, gasoline, GC-FID, gas chromatography, fuel analysis, ASTM D6166.