Laboratório de Ciências Físicas, Centro de Ciência e Tecnologia, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2000, Campos dos Goytacazes-RJ, RJ, Brazil.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jan;78(1):458-62. doi: 10.1016/j.saa.2010.11.009. Epub 2010 Nov 23.
A homemade photoacoustic spectrometer has been 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 and selective in detecting various gases. This work focuses on the 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 pollutant emissions from these anthropogenic sources needs to be evaluated. In 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 of this region.
已构建了一种自制的光声光谱仪，用于监测来自多个源的气体排放。许多空气污染物气体从工业、车辆和发电厂的废气中排放。光声技术在检测各种气体方面非常敏感和具有选择性。这项工作的重点是巴西里约热内卢州北部陶瓷工业排放的气体，陶瓷工业在该地区的经济活动中起着重要作用，近年来，该地区发展成为一个重要的红色陶瓷综合体。需要评估这些人为来源的气态污染物排放对该地区大气环境的潜在影响。在这项工作中，我们在陶瓷厂窑炉中采集的样品中检测到了浓度在 33-52ppmV 之间的氨气。我们采集的样品中存在的氨气可能来自于陶瓷材料提取地的粪肥土壤中过量的氮。该土壤用于甘蔗种植，这是该地区另一个重要的经济活动。
