Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Jadczyk Piotr

1 2024

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: polyclic aromatic hydrocarbons

Sortuj według:

Ogranicz wyniki do:

Variability in the mutagenicity of organic pollutants adsorbed on the particulate matter in the urban environment

Jadczyk Piotr

Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej

2024

Nr 92 (tom 1)

253--264

The aim of the study was to determine differences in mutagenicity of organic pollutants adsorber on suspended particulate matter in the city centre and its outskirts. Particulate matter was collected using a high-performance sampler in different parts of Wrocław in summer and winter. Organic compounds adsorbed on the particulate matter were extracted for 8 hours in Soxhlet apparatuses. The concentration of PAHs was determined using GC-MS. Mutagenicity of samples was tested using the Ames test. The concentrations of particulate matter suspended in the atmosphere ranged from 23 to 144 μg/m3, and PAHs from the EPA list adsorbed on it ranged from 8.3 to 1211.6 ng/m3. Particulate matter suspended in the atmosphere collected in different places in Wrocław in summer and winter showed mutagenic activity. This effect was greater in winter than in summer. In winter, it was greater in the city centre than on its outskirts. Activation with the S9 mix fraction caused a decrease in the mutagenic activity of most of the tested particulate matter samples against the TA 98 strain. This indicates the presence of mainly direct mutagens in them. The volumes of polluted air causing a mutagenic effect on the TA 98 strain without activation by the S9 mix fraction ranged from 0.25 to 35 m3. The high sensitivity of the YG 1021 and YG 1024 strains to the mutagenic effect of pollutants adsorbed on the tested particulate matter indicates a significant share of nitroarenes in their mutagenic activity. The differentiation of this share depended mainly on local and momentary conditions. The exposure of residents to the genotoxic effect of pollutants adsorbed on particulate matter increases in winter, especially in the city centre. Supplementing the currently used physicochemical monitoring of air pollution with a study of the mutagenic activity of pollutants adsorbed on particulate matter would allow for the assessment of this activity and the share of certain groups of pollutants, such as nitroarenes.