ISO 9517:2007 PDF

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

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Title (English):

ISO 9517:2007

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

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 13
Publication date:: January 18, 2007
Edition:: ISO IS 9517 edition 2 version 1
ICS:: 73.060.10

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Description (English):

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.

Technical details

Technical committee: 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,

Related standards

Other ISO standards

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

Technical details

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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