ISO 10700:1994 PDF

Overview

ISO 10700:1994 specifies a validated analytical procedure for the determination of manganese content in steel and iron using a flame atomic absorption spectrometric (FAAS) method. The standard covers sample dissolution, preparation of calibration solutions, instrument optimization and measurement at the 279.5 nm manganese spectral line using a manganese hollow‑cathode lamp. The method is applicable to manganese concentrations from 0.002 % (m/m) to 2.0 % (m/m).

Key Topics

• Sample preparation
  • Dissolve a test portion in hydrochloric and nitric acids, evaporate with perchloric acid until white fumes appear; use hydrofluoric acid where necessary for refractory samples.
  • Dilution and filtration steps to produce the final test solution.
• Spectrometric measurement
  • Spray the prepared solution into an air–acetylene fuel‑lean flame.
  • Measure atomic absorbance at 279.5 nm with a manganese hollow‑cathode lamp.
• Calibration and quantitation
  • Prepare background and manganese standard solutions; construct a calibration graph for each batch and concentration range.
  • Linearity, limit of detection, characteristic concentration and precision criteria are specified (e.g., characteristic concentration better than 0.1 µg Mn/mL; limit of detection