scholarly journals The octanol-air partition coefficient KOA as a predictor of gas-particle partitioning of polycyclic aromatic hydrocarbons and polychlorinated biphenyls at industrial and urban sites

2011 ◽  
Vol 76 (3) ◽  
pp. 447-458 ◽  
Author(s):  
Jelena Radonic ◽  
Mirjana Vojinovic-Miloradov ◽  
Maja Turk-Sekulic ◽  
Jelena Kiurski ◽  
Maja Djogo ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polychlorinated Biphenyls ◽  
Partition Coefficient ◽  
Aromatic Hydrocarbons ◽  
Correlation Coefficients ◽  
Field Measurements ◽  
Absorption Model ◽  
Adsorption Model ◽  
Polycyclic Aromatic ◽  
Urban Sites

The main objectives of the research were to estimate the relationship between the gas-particle partition coefficient, Kp, and the octanol-air partition coefficient, KOA, of polycyclic aromatic hydrocarbons, PAHs, and polychlorinated biphenyls, PCBs, at industrial and urban sites in the Vojvodina region, to compare the obtained slopes and intercepts of the log vs. log KOA relations with the results of regression analyses reported in previous studies and to assess the consistency between the particle-bound fractions predicted by the KOA absorption model and the results obtained within field measurements. Fairly good log KP - log KOA correlations, with an average value of the correlation coefficients of 0.70, indicate that the partition coefficient KOA can be used as a prediction parameter of the gas-particle partitioning processes for both classes of compounds. The results of modelling the atmospheric distribution of PAHs using the KOA absorption model showed inconsistencies between the measured and predicted values of the particle-bound fraction, ?, of 1-2 orders of magnitude, while significantly higher discrepancies for PAHs in the Nap-Ace range were found. A similar variability of the measured/modelled ? values was obtained using the Junge-Pankow adsorption model, indicating the presence of particles enriched with PAHs. The conducted research showed that the KOA-based approach was less suitable for predicting the gas-particle partitioning of PCBs in urban and industrial sites, compared to the Junge-Pankow model.

Influences of inorganic and polycyclic aromatic hydrocarbons on the sources of PM2.5 in the Southeast Asian urban sites

2017 ◽  
Vol 10 (8) ◽  
pp. 999-1013 ◽  
Author(s):  
Md Firoz Khan ◽  
Saw Wuan Hwa ◽  
Lim Chee Hou ◽  
Nur Ili Hamizah Mustaffa ◽  
Norhaniza Amil ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Southeast Asian ◽  
Polycyclic Aromatic ◽  
Urban Sites

scholarly journals Concentrations and regularities of disperse-phase distribution of organochlorine pesticides, polychlorinated biphenyls and polycyclic aromatic hydrocarbons in natural water

2020 ◽  
Vol 10 (9) ◽  
pp. 867
Author(s):  
Mikhail V. Milyukin ◽  
Maksym V. Gorban ◽  
Maksym V. Gorban
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polychlorinated Biphenyls ◽  
Disperse Phase ◽  
Organochlorine Pesticides ◽  
Aromatic Hydrocarbons ◽  
Phase Distribution ◽  
Water Soluble ◽  
Pollution Levels ◽  
Polycyclic Aromatic ◽  
Average Water

<div><p>This article presents the monitoring results of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) in surface water of the Dnieper River for the period 2011–2019. Total levels of OCPs, PCBs and PAHs consist of 1,4–17,1; 2,8–57,2; and 7,5–378,6 ng/L, respectively. A significant increase in pollution levels was not identified. Research results of the disperse-phase distribution of these substances in water were also provided. Less than half of the total contents of pollutants were in the water phase. Average water-soluble parts of OCPs, PCBs, and PAHs accounted for 32, 42, and 44 %, respectively. It was shown that water-soluble parts of individual pollutants decrease with the increase in <span style="text-decoration: line-through;">the</span> coefficients of hydrophobicity of compounds. The clearest reliable, relevant correlation between water-soluble parts of individual congeners and coefficients of hydrophobicity was obtained for PCBs.</p></div><p align="center"><strong><br /></strong></p>

scholarly journals Assessment of atmospheric distribution of polychlorinated biphenyls and polycyclic aromatic hydrocarbons using polyparameter model

2011 ◽  
Vol 65 (4) ◽  
pp. 371-380 ◽  
Author(s):  
Maja Turk-Sekulic ◽  
Jelena Radonic ◽  
Mirjana Vojinovic-Miloradov ◽  
Nevena Senk ◽  
Marija Okuka
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polychlorinated Biphenyls ◽  
Aromatic Hydrocarbons ◽  
Particulate Phase ◽  
Western Balkans ◽  
Industrial Plants ◽  
Air Samples ◽  
Polycyclic Aromatic ◽  
Complete Set ◽  
Conflict Period

Results of partial or total destruction of industrial plants, military targets, infrastructure, uncontrolled fires and explosions during the conflict period from 1991 to 1999, at the area of Western Balkans, were large amounts of hazardous organic matter that have been generated and emitted in the environment. In order to assess gas/particle partition of seven EPA polychlorinated biphenyls and sixteen EPA polycyclic aromatic hydrocarbons, twenty air samples have been collected at six urban, industrial and highly contaminated localities in Vojvodina. Hi-Vol methodology has been used for collecting ambiental air samples, that simultaneously collects gaseous and particulate phase with polyurethane foam filters (PUF) and glass fiber filters (GFF). PUF and GFF filters have been analyzed, and concentration levels of gaseous PCBs and PAHs molecules in gaseous and particulate phase were obtained, converted and expressed through fraction of individual compounds sorbed onto particulate phase of the sample, in total detected quantity. Experimentally gained gas/particle partitioning values of PCBs and PAHs molecules have been compared with PP-LFER model estimated values. Significant deviation has been noticed during comparative analysis of estimated polyparameter model values for complete set of seven PCBs congeners. Much better agreement of experimental and estimated values is for polycyclic aromatic hydrocarbons, especially for molecules with four rings. These results are in a good correlation with literature data where polyparameter model has been used for predicting gas/particle partition of studied group of organic molecules.

Sign in / Sign up

Export Citation Format

Share Document