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GB/T 7731.3-2008 Active
GB/T 7731.3-2008 Ferrotungsten—Determination of copper content—Bis(cyclohexanone) oxalyldihydrazone photometric method and flame atomic absorption spectrometric method
Abstract
This section specifies the photometric method using bis-HEK and flame atomic absorption spectrometry for determining the copper content. This section is applicable to the determination of copper content in tungsten iron. The measurement range (mass fraction) of the photometric method using bis-HEK is 0.030% to 0.25%; the measurement range (mass fraction) of the flame atomic absorption spectrometry is 0.020% to 0.25%.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 7731.3-2008 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Iron alloy |
| Implement Date | 2008-11-01 |
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