GB/T 223.64-2008Iron, steel and alloy -- Determination of manganese content -- Flame atomic absorption spectrometric method (English PDF)

National Standard of the People's Republic of China

ICS

77.080.01

Contents

• 1 Scope
• 2 Normative references
• 4.1 Pure iron, manganese-free or known residual manganese content.
• 4.2 Hydrochloric acid, p approximately 1.19 g/mL.
• 5.1.1 Minimum precision (see Appendix A.1)
• 5.1.3 Calibration curve linearity (see Appendix A.3)
• 5.2 Auxiliary devices
• 7 Analysis steps
• 7.1 Sample volume
• 7.3 Determination
• 7.3.1 Preparation of test solution
• 7.3.2.1 Manganese content (mass fraction) below 0.10%
• 7.3.2.2 Manganese content (mass fraction) 0.10% ~ 0.40%
• 7.3.2.3 Manganese content (mass fraction) at 0.40% ~ 2.0%
• 7.3.3 Preparation of calibration solution
• 7.3.3.1 Manganese content (mass fraction) below 0.10%
• 7.3.3.2 Manganese content (mass fraction) is 0.10% ~ 0.40%
• 7.3.3.3 Manganese content (mass fraction) is 0.40% ~ 2.0%
• 7.3.4 Atomic absorption spectrometer adjustment
• 7.3.5 Atomic Absorption Device Optimization
• 7.3.6 Spectral measurement
• 7.4 Calibration curve drawing
• 8.1 Calculation method
• 8.2 Precision