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In a study over a two-month period, identifying the volatile compounds of potential odorous substances (hydrogen sulfide, ammonia, benzene, toluene, xylene, etc.), which periodically spread in the area adjacent to the Free Port of Riga and have a negative impact on the quality of life and health of residents of these areas. Potential sources of odours were identified as far as possible and the results obtained were assessed in the context of complaints from citizens and the results obtained in the reference measur...

Low-cost sensors, either electrochemical, optical or light scatter based and piezoelectric, due to low price and performance explainability are becoming more available for monitoring, studying and explaining urban air quality. This paper explores low-cost sensor technology applicability for air quality measurements in urban territory. At least two month long monitoring campaigns were conducted during summer 2018 in Riga (Latvia). For validation purposes different monitoring sites were selected in order to assess i...