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.

n this paper, the detection protocols for the selective and simultaneous determination of diclofenac (DCF) and tetracycline (TC) in aqueous solutions were developed using a commercial boron-doped diamond electrode modified with graphene oxide and silver, as the Ag/GF/BDD electrode. This electrode presented the possibility to detect only DCF and TC selectively by applying amperometric techniques. However, the pulsed voltammetric techniques operated in optimized working conditions allowed the selective/simultaneous detection of DCF and TC characterized by the improvement of the performance parameters compared to CV. Following the research study related to the electrochemical detection application of the two emerging target pollutants (DCF and TC), the Ag/GF/BDD electrode presented good stability and reproducibility of the results obtained.