This standard specifies the method for the determination of sulfur dioxide in the environment air by formaldehyde absorption-paracrosine Spectrophotometric method, spectra-trophotometry. It is suitable for the quantitative determination of sulfur dioxide concentration in the environment air. When different absorption liquids and sampling volumes are used, the detection limit and measurement range of the determination are 0.004 mg/m ³ to 0.667 mg/m ³, respectively. Methods Absorbance was measured at 577nm to determine the concentration of sulfur dioxide by reacting formaldehyde with paracrosine aniline.
| Status | Active |
|---|---|
| CCS | (Z) 环境保护 | ICS |
| Release Date | 2009-09-27 00:00:00 | Implementation Date | 2009-11-01 00:00:00 |