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ISO 11724:2019 PDF — Solid mineral fuels — Determination of total fluorine in coal, coke a… — GOST Standards

//ISO 11724:2019

ISO 11724:2019

Name: ISO 11724:2019 — Solid mineral fuels — Determination of total fluorine in coal, coke and fly ash
SKU: ISO 11724:2019
Price: 19800 RUB
Availability: InStock

Solid mineral fuels — Determination of total fluorine in coal, coke and fly ash

Название (английский):

ISO 11724:2019

Solid mineral fuels — Determination of total fluorine in coal, coke and fly ash

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 4 июня 2019 г.
Издание:: ISO IS 11724 edition 3 version 1
ICS:: 73.040

Тип поставки:

Full version19 800 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:2 раб. дн. (перевод)

Цена:19 800 ₽

Описание (английский):

This document specifies a method for the determination of total fluorine in coal, coke and fly ash. From measurement of the total fluorine alone, it is not possible to estimate the amount of fluorine released to the environment by utilization of the coal and subsequent disposal of the ash residue.

Abstract

Overview

Key topics and requirements

Scope and limitation: Total fluorine measurement for coal, coke and fly ash; does not estimate environmental release.
Principle: Mixing sample with silica, pyrohydrolysis in a tube furnace and absorption of volatilized fluorine for subsequent analysis.
Analytical routes: Measurement by fluoride ion-selective electrode (ISE) (direct-comparison or analyte-addition methods) or ion chromatography (IC).
Apparatus and reagents: Detailed requirements for silica, absorption solutions (e.g., NaOH-based for ISE, carbonate/bicarbonate for IC), oxygen supply, tube-furnace pyrohydrolysis apparatus, ISE electrodes and IC systems.
Sample handling: Test portions prepared from general analysis samples (per ISO sampling standards); attention to representative sampling and avoidance of contamination for fly ash.
Procedure controls: Duplicate determinations, blank tests, apparatus conditioning, electrode conditioning and calibration, and solution processing prior to measurement.
Safety and quality: Cautions on toxic/corrosive reagents and silica dust; use analytical-grade reagents and purified water.
Reporting and precision: Requirements for calculations, expression of results and precision data (repeatability/reproducibility limits included in the standard).

Applications and users

Laboratories performing fuel quality analysis and geochemical testing.
Coal and coke producers for product quality control.
Power plants and utilities assessing feedstock composition and ash management.
Environmental labs and regulators monitoring fluorine content in combustion residues.
Research institutions studying fluorine distribution in solid fuels and combustion products. Practical uses include feedstock specification, process control, ash characterization and baseline data for environmental assessments - while keeping in mind that further testing or modelling is required to estimate fluorine emissions.

Related standards

Normative references in ISO 11724:2019 include:

ISO 589, ISO 687, ISO 5068-2, ISO 11722 (moisture/sample prep)
ISO 13909-4 and ISO 13909-6 (mechanical sampling and test-sample preparation) These standards support sampling, moisture determination and sample preparation for accurate fluorine analysis.

Технические детали

Технический комитет: ISO/TC 27/SC 5 - Methods of analysis
SKU: ISO 11724:2019

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