BS EN ISO 16591-2010 (BS 2000-373-2010) PDF

Full title and description

STB BS EN ISO 16591-2010 (BS 2000-373-2010) — Petroleum products. Determination of sulfur content. Oxidative microcoulometry method. This item is the national/adopted edition of ISO 16591:2010 published as an EN and as a British Standard (BS 2000-373:2010 / BS EN ISO 16591:2010).

Abstract

Specifies an oxidative microcoulometry method for determining sulfur in light and middle petroleum distillates (final boiling point ≤ 400 °C). Applicable to sulfur mass fractions in the nominal range 1 mg/kg to 100 mg/kg (with procedures for handling concentrations above 100 mg/kg by dilution and guidance for <1 mg/kg in an informative annex). The method quantifies SO2 produced by combustion via a coulometric (iodometric) cell.

General information

• Status: Published; international edition confirmed (ISO confirmed on review).
• Publication date: ISO edition published December 2010; BS/EN adoption published/issued in 2010–2011 (BS listing shows 2011/2013 publication references).
• Publisher: International: ISO (original); National/adopted editions published by BSI (British Standards Institution) / designated as BS 2000-373(2010).
• ICS / categories: 75.080 — Petroleum products in general; chemical analysis and testing.
• Edition / version: Edition 1 (2010) — ISO 16591:2010 / EN ISO 16591:2010 / BS EN ISO 16591:2010 (also referenced as BS 2000-373:2010).
• Number of pages: ISO PDF: 15 pages (ISO edition); adopted BSI publication listings commonly show 24 pages in the British publication format (cover, foreword, annexes and national front matter can change page count).

Scope

Defines a laboratory test method — oxidative microcoulometry — for determination of sulfur in petroleum light and middle distillates with final boiling point not higher than 400 °C. The standard covers the analytical principle, reagents, apparatus, sampling and sample preparation, verification and calibration, procedure, calculation, expression of results, precision data and informative annexes for low‑level sulfur determination and troubleshooting. Applicable nominal concentration range is 1–100 mg/kg (with instructions for dilutions above and modified technique for below this range).

Key topics and requirements

• Analytical principle: combustion of a measured test portion, conversion of sulfur to SO2, reaction with an iodometric coulometric cell and coulometric measurement proportional to sulfur mass.
• Scope of applicability: light and middle distillates (final boiling point ≤ 400 °C); nominal range 1–100 mg/kg; dilution or modified techniques provided for values outside this range.
• Apparatus and calibration: detailed requirements for combustion system, traps, cell electrolyte and calibration curve verification using certified reference materials or standards.
• Interferences and mitigation: notes on interference from nitrogen, chlorine, bromine and organometallic compounds and measures such as electrolyte additives (e.g., sodium azide) to overcome some interferences.
• Performance and precision: precision and repeatability data are provided for the specified concentration range; test report content and expression of results defined.
• Informative annexes: procedure for sulfur contents below 1 mg/kg (standby technique), troubleshooting guidance and calculation details from electrochemical data.

Typical use and users

Used by analytical laboratories, fuel and petroleum product manufacturers, refineries, quality control divisions, regulatory bodies and testing service providers for routine and compliance testing of sulfur in petroleum distillates. Also used by instrument manufacturers and method developers to validate and demonstrate performance of oxidative microcoulometry analyzers.

Related standards

Referenced and related standards include other petroleum sampling and sulfur-determination methods and laboratory practice standards such as ISO 3170, ISO 3171, ISO 3675, ISO 4260 and ISO 4259, among others addressing sampling, density determination and precision data for test methods. The document is available as EN ISO and national adoptions (e.g., DIN, NEN, NBN, NS, PN, NF and the British BS 2000-373 designation).

Keywords

sulfur determination; oxidative microcoulometry; petroleum products; distillates; sulfur content; coulometric analysis; BS EN ISO 16591; BS 2000-373; ISO 16591:2010.

FAQ

Q: What is this standard?

A: An international test method (ISO 16591:2010) adopted as EN ISO and as a British Standard (BS EN ISO 16591:2010 / BS 2000-373:2010) that specifies oxidative microcoulometry for measuring sulfur in light and middle petroleum distillates.

Q: What does it cover?

A: The method covers principle, apparatus, reagents, sample handling, calibration and verification, test procedure, calculation and expression of results, precision data for the 1–100 mg/kg range, and informative annexes for low‑level analysis and troubleshooting.

Q: Who typically uses it?

A: Analytical laboratories, refineries, fuel producers, instrument vendors, quality managers and regulatory testing bodies that need a validated method for sulfur quantification in distillate fuels and related petroleum streams.

Q: Is it current or superseded?

A: ISO 16591:2010 is the published edition (2010) and was reviewed/confirmed in subsequent ISO reviews (the ISO record indicates the edition has been confirmed on review). Users should check their national standards body for the latest national adoption status and any corrigenda or amendments.

Q: Is it part of a series?

A: It is one of several ISO/EN/BS methods for petroleum product analysis; it is published as an ISO standard and is commonly released as EN ISO and national adoptions (BS, DIN, NEN, etc.). It also cross‑references other petroleum sampling and analytical standards.

Q: What are the key keywords?

A: Sulfur, oxidative microcoulometry, petroleum products, distillates, sulfur content, coulometric titration, BS EN ISO 16591, BS 2000-373.