ISO 9517:2007 PDF

Iron ores — Determination of water-soluble chloride — Ion-selective electrode method

Название (английский):

ISO 9517:2007

Iron ores — Determination of water-soluble chloride — Ion-selective electrode method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 18 января 2007 г.
Издание:: ISO IS 9517 edition 2 version 1
ICS:: 73.060.10

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Описание (английский):

ISO 9517:2007 specifies an ion-selective electrode method for the determination of the mass fraction of water-soluble chloride in iron ores. This method is applicable to a mass-fraction range of 0,007 % to 0,1 % of water-soluble chloride in natural iron ores, concentrates and agglomerates, including sinter products.

Технические детали

Технический комитет: ISO/TC 102/SC 2 - Chemical analysis
SKU: ISO 9517:2007

Abstract

Overview

ISO 9517:2007 - "Iron ores - Determination of water‑soluble chloride - Ion‑selective electrode method" specifies a potentiometric procedure to determine the mass fraction of water‑soluble chloride in iron ores, concentrates and agglomerates (including sinter). The method is applicable to the range 0.007 % to 0.1 % water‑soluble chloride and defines the sampling, sample preparation, reagents, apparatus and calculation rules required for reliable chloride determination.

Key topics and technical requirements

Analytical principle: Leaching of a predried test portion in water with potassium sulfate, filtration and potentiometric measurement with a chloride ion‑selective electrode (ISE) and a double‑junction reference electrode after addition of phosphate buffer, potassium persulfate (oxidant) and an ionic‑strength adjuster (sodium nitrate).
Measurement range: Valid for 0.007 % to 0.1 % water‑soluble chloride in natural iron ores and derived products.
Calibration: Preparation of calibration solutions (examples: 2, 3, 5, 10, 25, 50 µg Cl−/ml) using defined standard solutions; low‑level calibrations (2–10 µg/ml) should be prepared on the day of use.
Apparatus and consumables: Chloride ISE and separate double‑junction reference electrode (combined electrodes not suitable), high‑impedance meter with 0.1 mV sensitivity, microfilters (cellulose membrane,

Overview

Key topics and technical requirements

Analytical principle: Leaching of a predried test portion in water with potassium sulfate, filtration and potentiometric measurement with a chloride ion‑selective electrode (ISE) and a double‑junction reference electrode after addition of phosphate buffer, potassium persulfate (oxidant) and an ionic‑strength adjuster (sodium nitrate).
Measurement range: Valid for 0.007 % to 0.1 % water‑soluble chloride in natural iron ores and derived products.
Calibration: Preparation of calibration solutions (examples: 2, 3, 5, 10, 25, 50 µg Cl−/ml) using defined standard solutions; low‑level calibrations (2–10 µg/ml) should be prepared on the day of use.
Apparatus and consumables: Chloride ISE and separate double‑junction reference electrode (combined electrodes not suitable), high‑impedance meter with 0.1 mV sensitivity, microfilters (cellulose membrane,

ISO 9517:2007 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

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