The GB/T 7731.6-2008 standard specifies methods for the determination of arsenic content in ferrotungsten, including molybdenum blue photometry and Inductance coupled plasma atomic emission spectroscopy (AES) method. The molybdenum blue photometry is suitable for the determination of arsenic content in the range of 0.010% to 0.10%, and the molybdenum blue is formed by chemical reaction. Absorbance is measured at a wavelength of 810 nm. The Inductance coupled plasma atomic emission spectroscopy (AES) method is suitable for the determination of arsenic content in the range of 0.010% to 0.20%, and the arsenic concentration is determined by Inductance coupled plasma emission light spectrum. These methods ensure the accurate determination of arsenic content in ferrotungsten, which is of great significance to related industries and scientific research fields.
| Status | Active | ||
|---|---|---|---|
| CCS | H11 | ICS | 77.100 |
| Release Date | 2008-08-19 00:00:00 | Implementation Date | 2009-04-01 00:00:00 |