ammonia in indoor air testing method has two kinds: the first is a indophenol blue spectrophotometric method, after the liquid ammonia in the air is absorbed by sulfuric acid absorption, the nitroso compound sodium cyanide green, iron quantitatively and then this law can measure range 0.05 0.8 mg/m is suitable for containing low ammonia environment;

The second is nessler's reagent spectrophotometry, absorption of ammonia, with dilute sulphuric acid solution in the form of ammonium ion and reflect nessler's reagent tan complex, and then quantitatively than color.This law measurable range 0.13 1.00 mg/m suitable for containing high ammonia.4, the determination of total volatile organic compounds.

According to the national standard GB/T18883 appendix C using meteorological chromatography.With suitable solid adsorbent to collect volatile organic compounds in the air, after sampling the sampling tube heating ventilation with nitrogen at the same time, the resolution by adsorption of compounds, the capillary chromatographic column separation,
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