ISO 315:1984

Overview

ISO 315:1984 specifies standardized methods for determining nickel content in manganese ores and concentrates. Published by the International Organization for Standardization (ISO), this standard outlines two precise analytical techniques: the dimethylglyoxime spectrometric method (Method A) and the flame atomic absorption spectrometric method (Method B). Method A is suitable for nickel concentrations from 0.01% to 1.0% (m/m), while Method B extends the detection range from 0.005% up to 1.0% (m/m). These methods are essential for quality assurance, process control, and regulatory compliance in the mining and metallurgy sectors.

Key Topics

• Nickel Determination: Covers techniques for accurately measuring nickel in manganese ores and concentrates.
• Analytical Methods:
  • Method A: Utilizes the reaction of nickel ions with dimethylglyoxime under alkaline conditions to form a colored complex, measured spectrometrically at 460 to 470 nm.
  • Method B: Applies flame atomic absorption spectrometry at 232 nm for quantification, offering high sensitivity and precision.
• Scope and Applicability:
  • Method A: 0.01% - 1.0% (m/m) nickel content.
  • Method B: 0.005% - 1.0% (m/m) nickel content.
• Procedural Guidance: The standard details the required reagents, apparatus, sample preparation steps, analytical procedures, calibration, and calculation of results. Both methods include blank testing to ensure accuracy.

Applications

ISO 315:1984 plays a crucial role in various fields, providing a reliable framework for nickel analysis in:

• Mining Operations: Ensures accurate assessment of nickel content in ore bodies, critical for economic evaluation and resource estimation.
• Metallurgical Processing: Supports process control and optimization by monitoring nickel concentrations in feed stocks and concentrates.
• Quality Control and Certification: Used by laboratories and certifying bodies for independent verification and compliance with product specifications and international trade agreements.
• Regulatory Compliance: Helps companies meet environmental and product safety regulations concerning trace metals in mineral-derived products.
• Research and Development: Facilitates the development of new extractive and refining processes through accurate analytical support.

The dual-method approach offers flexibility, allowing organizations to select the most suitable technique based on their available equipment, required detection limits, and sample characteristics.

Related Standards

To ensure comprehensive, standardized analysis, ISO 315:1984 should be used alongside related documents, particularly in sample handling and preparation. Relevant ISO standards include:

• ISO 4296-1: Manganese ores - Sampling - Part 1: Increment sampling
• ISO 4296-2: Manganese ores - Sampling - Part 2: Preparation of samples
• ISO 4297: Manganese ores and concentrates - Methods of chemical analysis - General instructions

These standards collectively support best practices in chemical analysis, from sampling to final results, ensuring data accuracy and international comparability.

Keywords: ISO 315:1984, manganese ores, nickel determination, dimethylglyoxime spectrometric method, flame atomic absorption spectrometry, chemical analysis, minerals, ISO standards, ore concentrates, sample preparation, quality control, mining industry, metallurgy, regulatory compliance.