ISO 10278:1995

Overview

ISO 10278:1995 - Steel - Determination of manganese content - Inductively coupled plasma atomic emission spectrometric method specifies an ICP-AES procedure for measuring manganese in unalloyed steels. The method covers manganese contents from 0.002 % (m/m) to 1.5 % (m/m). It defines sample dissolution, instrumental settings, calibration, and quality checks to ensure reliable quantitative results.

Key topics and technical requirements

• Scope and principle: Dissolve a test portion of steel in a mixture of hydrochloric and nitric acids, optionally add an internal standard (scandium or yttrium), nebulize the solution into an ICP-AES and measure the manganese emission at 257.61 nm.
• Internal standards: Scandium (361.38 nm) or yttrium (371.03 nm) may be used to correct for matrix effects and instrument drift; simultaneous measurement of analyte and internal standard is specified when applicable.
• Calibration and measurements: Linear calibration graphs are required (correlation coefficient > 0.999). Blank tests and multiple calibration points spanning the method range are required; five integrations per solution and checks for short-term stability are specified.
• Instrument performance: Bandwidth for analytical lines shall be