CO2 laser photoacoustic detection of ammonia emitted by ceramic industries

Autores: Sthel, M.S.|Schramm, D.U.|Lima, G.R.|Carneiro, L.|Faria, R.T.|Castro, M.P.P.|Alexandre, J.|Toledo, R.|Silva, M.G.|Vargas, H.
Fuente: Spectrochim. acta
A 78 (1), 458-462

A homemade Photoacoustic Spectrometer has constructed for monitoring gas emission from several sources. Numerous air pollutant gases are emitted exhaust of industries, vehicles and power plants. The Photoacoustic technique is extremely sensitive e selective in detection various gases. This work available gas emitted by the ceramic industry in northern Rio de Janeiro State in Brazil, the ceramic industry plays a remarkable role in the economy activity of this region., in recent years, this region developed into a significant red ceramic complex. The potential impact on the atmospheric environment of the region due to gaseous pollutants emissions from these anthropogenic sources needs to be evaluated. This work we identified NH3 present in the samples collected in the kiln of a ceramic plant, in the concentration range of 33?52 ppmV. The ammonia gas present in our collected samples might come from the excess nitrogen in the manure soil from where the ceramic material was extracted. This soil was used for the sugarcane culture which is another important economic activity this region.

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