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Collection methods.
| Detection object | Sampling method | Detection Indicator |
|---|---|---|
| SO3(g) | Controlled condensation24 | SO42− |
| Spiral tube method | ||
| 80% isopropanol absorption method | ||
| NaOH absorption method | ||
| Direct spectroscopy | SO3 | |
| NH3(g) | Power Plant CEMS(Continuous emission monitoring system) | NH3 |
| Ammonia infrared analyzer | ||
| Lye absorption | NH4+ | |
| NH4HSO4 | Quartz wool | |
| glass bead | ||
| Electric scale low voltage impactor25 |
