Table 2 Collection methods.

From: Status and development for detection and control of ammonium bisulfate as a by-product of SCR denitrification

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

 
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