Suchergebnisse

In this paper, a comparison is made of the level of air pollution between two brick production lines that apply different technologies, one old and one new, and more efficient. The main pollutants emitted in the air from the baking kilns are CO, SO2, NO2, HCl, HF, and dust. The monitoring of emissions was performed with a Testo 350 flue gas analyzer – the automatic method. A Paul Gothe isokinetic sampler was used to take dust, HCl, and HF sampling, and the analysis was performed in the laboratory using gravimetric and spectrophotometric analytical methods. The results of the tests performed showed a reduction in the level of pollution by applying the new and BAT technologies by up to 90% for all monitored pollutants, compared to the pollution produced by old and non-re-technologized line. At the same time, energy consumption is lower per unit of product, which results in a significant decrease in production costs.

This study aimed to develop two analytical methods for the determination of Cr6+ from fixed source emissions, such as the molecular absorption spectrophotometric method (UV-VIS) and the graphite furnace atomization absorption spectrometry method (GTAAS). The first stage in the development of analytical methods involves establishing the optimal operating conditions for, taking air samples, treating them for analysis, and the proceeding for analysis, followed by validating the method by determining performance parameters. For both methods is highly recommended, the use of isokinetic sampling with a sampling probe by the heated glass, quartz, or PTFE. The limit of detection and the limit of quantification were concluded to be 12.38µg/m3 and 40µg/m3, respectively for the UV-VIS method and the GTAAS method 0.12 µg/m3 and 0.54 µg/m3 respectively.

In the paper are presented the results of tests on the evaluation of the level of noise and chemical air pollution in two distinct urban areas: an industrial area and an area characterized by heavy road traffic, with a focus on the novelty elements introduced by the regulations in force on the measurement and management of the level of ambient and industrial noise by periodically developing specific noise maps. The results of direct tests and noise maps developed in the case of the studied areas indicated higher values of the indicators measured near the road artery compared to the other measuring points, highlighting the influence of vegetation in urban areas to reduce noise levels and reduce air pollution.