Wyniki wyszukiwania

1

Microorganisms in the air over wastewater treatment plants

100%

Kruczalak K., Olanczuk-Neyman K.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 5

We present the results of investigations of microorganisms present in aerosol emitted by selected devices of two mechanical-biological wastewater treatment plants (“Debogorze” and “Gdańsk-Wschód”). In 2002, 5 series of measurements were conducted at each of the plants. The samples of air were collected by means of sedimentation method (PN-89/Z-04008/08) and by means of filtration method, using an air sampler produced by Merck. Apart from measurements of microbiological analyses, consisting of determinations of the total number of psychrophillic and mezophillic bacteria, manitol-positive and manitol-negative staphylococcus, hemolysing staphylococcus, Pseudomonas fluorescens, coliform bacteria and the number of spores of phycomycetes, weather conditions were also monitored. The most numerous microorganisms in the monitored air were psychrophillic bacteria and spores of phycomycetes. The number of psychrophillic bacteria varied in the wide range from 14 to 5255 CFU/m3, the number of mezophillic bacteria changed from 1 to 1324 CFU/m3, the number of staphylococcus – from 1 to 150 CFU/m3, the numbers of Pseudomonas fluorescens and the coliforms varied from a few to 50 CFU/m3 and the spores of phycomycetes varied from a few to 5,250 CFU/m3 of air (collected by means of Merck air sampler). It was found out that in both plants the main sources of microorganisms were sludge recirculation chambers and sand traps. The air around aeration chambers of activated sludge contained similar numbers of microorganisms as the background. It was proved that the sampling method is of critical effect on measurement results. The number of microorganisms detected in the samples collected by means of sedimentation method was by one order of magnitude higher than in the samples collected by means of filtration method (using air sampler), allowing for strict control of the filtered air volume.

2

Lidar-based investigations of optical extinction in the marine boundary layer over the coastal area

88%

Zielinski T., Piskozub J., Drozdowska V., Irczuk M., Zielinski M.

Oceanological Studies

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2000

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tom 29

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nr 3

3

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Using the aerosol of SiO2/ZrO2 catalyst nanoparticles to obtain gasoline and diesel from vacuum gasoil

75%

Glikin M., Pokuian O., Alsooz A. H., Kudryavtsev S.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2013

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tom 13

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nr 3

4

Ventiljatornoe opryskivanie vinogradnikov kak process filtrovanija aehrozolejj

75%

Seraja E.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2014

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tom 16

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nr 3

5

Developing computer-integrated control system for reactor of nanocatalytic petroleum products refining

75%

Alahmad Almou K.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2016

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tom 16

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nr 2

6

Lidar observation of aerosol transformation in the atmospheric boundary layer above the Baltic Sea

75%

Makuch P., Sitarek S., Markuszewski P., Petelski T., Stacewicz T.

Oceanologia

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2021

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tom 63

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nr 2

7

Endotoxin levels as a potential marker of concentration of Gram-negative bacteria in water effluent from dental units and dental aerosols

75%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2005

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tom 12

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nr 2

229-232

Gram-negative bacteria concentration in water effluent from a dental unit, and in dental aerosol forming during the work of a dental handpiece, was assessed. The study was conducted on 25 dental units before and after a 2-week period of using a disinfecntant for water in dental units waterlines (DUWL). The contamination of water with Gram-negative bacteria before disinfection was 18-398 x 103 cfu/ml, and after disinfection, bacteria were not found. The concentration of Gram-negative bacteria in the air before disinfection was 0-23 x 101 cfu/m3, and after disinfection - 0-8 x 101 cfu/m3. Simultaneously, the water and air were sampled to determine bacterial endotoxin. The statistical analysis did not show correlation between endotoxin concentration and Gram-negative bacteria concentration for the water before disinfection, and for the air before and after disinfection of DUWL water. Because the number of bacteria in the water after disinfection dropped to zero, statistical methods could not be used. The performed analysis suggests that bacterial endotoxin concentration is not indicative of Gram-negative bacteria contamination. Thus, bacterial endotoxin determination is not recommended as a method of monitoring the microbiological quality of DUWL water and dental aerosols.

8

Dependence of the surf zone aerosol on wind direction and wind speed at a coastal site on the Baltic Sea

75%

Zielinski T.

Oceanologia

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2003

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tom 45

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nr 3

Since 1992 lidar-based measurements have been carried out under various meteorological conditions and at various times of the year. The aerosol optical properties were determined in the marine boundary layer as a function of altitude using such factors as wind direction, duration and velocity and aerosol size distribution and concentration. It was confirmed that in all cases, the total aerosol concentration, size distribution and aerosol extinction increase with wind speed but decrease with altitude. In the range of wind velocities from 1 to 15 m s−1 the mean aerosol optical thickness of the atmosphere (VIS) obtained from the lidar varied from 0.1 to 0.38 for offshore winds and from 0.01 to about 0.1 for onshore winds, while the ˚Angstr¨om parameter for VIS oscillated around 0.65 for onshore winds and around 1 for offshore winds. Both parameters depended strongly on the history of the air mass above the Baltic Sea. Such aerosol optical thicknesses are in agreement with those obtained by other researchers in the Baltic Sea area.

9

Sulphates in particles of different sizes in the marine boundary layer over the Southern Baltic Sea

75%

Falkowska L., Lewandowska A.

Oceanologia

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2004

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tom 46

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nr 2

Concentrations of sulphate ions and particle size distributions were measured in the marine boundary layer using a ten-cascade Berner impactor at Hel between December 1997 and March 1998, and with a filter packin Gdynia from February to May 2001. In the marine boundary layer over the Hel Peninsula the presence of natural sea-salt and non-sea-salt sulphate ions (nssSO4 2−) was confirmed in the aerosols. The nssSO4 were present in all size ranges only in December 1997 and in the first half of January 1998, making up an average of 83.7±2.4% of the total sulphate content. In the other winter months, nssSO4 2− were recorded only in aerosols of diameters from 0.4 to 1.5 μm, and their average contribution dropped by over 20%. The extended growing season in the Southern Baltic resulted in the formation of fine particles that appeared in the marine boundary layer in early winter. At that time the proportion of nssSO4 2− in ultra-fine particles ranged from 75.7% to 100%. The concentration of nssSO4 2−, which varied from 0.8 to 2.3 nmol m−3 in particles < 0.4 μm in size probably constituted the natural background aerosol population in the relatively clean coastal environment of the Southern Baltic Sea. In the coastal urbanised area of Gdynia, the sulphate concentration in aerosols was higher than at Hel (av. 75.3 nmol m−3) but the proportion of nssSO4 was low, of the order of 24%. Sea salt was then the dominant source of sulphate.

10

Preliminary results of lidar based studies of the aerosol vertical distribution in the lower troposphere over urban coastal areas

75%

Halas M., Blaszczak Z., Grabowski J., Papayannis A., Zielinski T.

Oceanologia

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2004

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tom 46

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nr 3

The paper reports the results of lidar measurements performed in the lower troposphere during several measurement sessions in Athens (Greece) in 2000. For the sake of comparison, results of a similar study performed in Kołobrzeg (Poland) in 2001 are also given. These data indicate that the exhaust gases produced by motor transportation in the cities resulted in the formation of an inversion layer. The rate of convection of the inversion layer depends on the intensity of sunlight, the strength of winds and the morphology of the land. The inversion layer reaches the highest altitudes in the middle of summer, lower in early and late summer and the lowest in autumn. Over the sea the inversion layer altitude extends to several meters, but on moving inland it rises to a fewh undred meters.

11

Laser ablation studies of solid aerosols on the Baltic coast

75%

Jaworski R., Wroblewski T., Hoffmann E.

Oceanologia

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2004

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tom 46

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nr 3

A Berner cascade impactor was used for the separation of solid urban aerosols in two localities of the Baltic coastal macro-region – Słupsk and Hel – in different seasons and weathers. Ten ranges of aerodynamic diameters between 0.009 and 8.11 μm were used. The elementary composition for each diameter was obtained in a complex procedure consisting of laser ablation of deposits, then their successive ionization in an inductively coupled plasma generator, and finally, mass selection in a quadrupole spectrometer. Despite its complexity, the chemical element analysis method proved to be versatile, allowing the identification air pollution from natural and industrial sources, and road traffic.

12

Sea salt emission from the coastal zone

75%

Petelski T., Chomka M.

Oceanologia

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2000

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tom 42

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nr 4

The paper presents the findings of experiments to determine marine aerosol emission from the coastal zone. A relation between aerosol flux and wave energy dissipation was found. The emission fluxes calculated for the distribution of aerosol concentration are proportional to the dissipation of wave energy to the power of 3/4. The calculations were carried out using the experimental data obtained during the TABEX and BAEX experiments.

13

Nitrogen species and macroelements in aerosols over the Southern Baltic Sea

75%

Nadstazik A., Marks R., Schulz M.

Oceanologia

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2000

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tom 42

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nr 4

The annual cycle of atmospheric nitrogen species and macroelements (Na+, K+, Ca2+, Mg2+ and Cl−) over the south-eastern Baltic region was investigated. A one-year record enabled the variability of nitrogen species and macroelements in the aerosol over the coastal station at Hel to be traced. The highest concentrations of sea salt components were recorded in summer, while anthropogenic nitrate concentrations were highest in winter. When the air masses were of mixed marine and continental origin, the nitric acid reacted with coarse sea salt particles to form stable, coarse sodium nitrate. This seems to be a permanent removal pathway for nitrate. Anthropogenic aerosol species like NH+4 or NO− 3 formed by gas-to-particle conversion were generally associated with fine particles (<1 μm). Coarse particles like sodium or chloride resulted from resuspension from seawater.

14

A method to investigate the dynamics of the content of metals in the airborne component of mass exchange between sea and atmosphere over the Baltic Sea

63%

Garbalewski C., Berek H., Foldzinska A.

Oceanologia

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1979

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tom 11

15

Influence of traffic on particulate-matter polycylic aromatic hydrocarbons in urban atmosphere of Zabrze, Poland

63%

Cwiklak K., Pastuszka J. S., Rogula-Kozlowska W.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 4

579-585

Exposure to polycyclic aromatic hydrocarbons (PAHs) of traffic-origin, adsorbed on PM10 and PM2.5 particulate matter in Zabrze, Upper Silesia, Poland, is investigated for summer 2005. Exposure levels for the particulate PAHs near the crossroads is about 66 ng/m³ and 44 ng/m³ for PM10 and PM2.5, respectively. The relative concentration increase of these compounds in road intersections compared to the concentration away from traffic emissions is equal to 189% and 237% for PAHs associated with PM10 and PM2.5, respectively. The fingerprint of PAHs contained in PM2.5 is distinctly different near the crossroads compared to the urban background site, while the fingerprints of PAHs contained in PM10 at both sites are almost the same.

16

Inhalation of tobramycin in patients with cystic fibrosis: comparison of two methods

63%

Dopfer R., Brand P., Mullinger B., Hunger T., Haussermann S., Meyer T., Scheuch G., Siekmeier R.

Journal of Physiology and Pharmacology. Supplement

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2007

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tom 58

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nr 5

17

Aerosol Optical Depth variations due to local breeze circulation in Kongsfjorden, Spitsbergen

63%

Cisek M., Petelski T., Zielinski T., Makuch P., Pakszys P., Rozwadowska A., Markuszewski P.

Oceanologia

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2017

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tom 59

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nr 4

This paper presents the results of Aerosol Optical Depth (AOD) studies which took place in Ny-Ålesund in the spring of 2014 during the iAREA campaign. The measurements were taken using Microtops II hand-held sunphotometers along the Kongsfjorden, on a path leading from the research village to the fjord opening. Local breeze circulation was observed during the measurement campaign which resulted in an evident increase of AOD along the measurement profile towards the open sea. Using the observed AOD, changes over the open sea have been calculated and the location of the breeze front has been determined.

18

Validation of SeaWiFS and MODIS Aqua-Terra aerosol products in coastal regions of European marginal seas

63%

Melin F., Zibordi G., Carlund T., Holben B. N., Stefan S.

Oceanologia

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2013

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tom 55

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nr 1

19

Comparison of aerosol optical depth products from multi-satellites over densely populated cities of Pakistan

63%

Butt F. M., Shahzad M. I., Khalid S., Iqbal N., Rasheed A., Raza G.

International Letters of Natural Sciences

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2018

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tom 69

Air pollution in Pakistan is causing damage to health, environment and quality of life. Air pollution in Pakistan is not effectively monitored due to heavy cost involved in setting up ground stations. However, Satellite remote sensing can effectively monitor the air pollution in terms of Aerosol Optical Depth (AOD) at regional as well as global level. However, algorithms used to derive AOD from different sensors have some inherited differences which can pose challenges in monitoring regional AOD at high temporal resolution using more than one sensor. Therefore, this study focuses on comparison of four major satellite based AOD products namely Moderate Resolution Imaging SpectroRadiometer (MODIS), Multi-angle Imaging SpectroRadiometer (MISR), Ozone Monitoring Instrument multiwavelength (OMI) aerosol product and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) with the ground based AErosol RObotic NETwork (AERONET) AOD which is only available from Lahore and Karachi in Pakistan. The correlation of various AOD products with AERONET AOD is estimated statistically through coefficient of determination (R²), Root Mean Square Error (RMSE), slope and intercept. It is noticed that MODIS is relatively accurate and reliable for monitoring air quality on operational bases over the land cover area of Lahore (R² = 0.78; RMSE = 0.18), whereas MISR over the coastal areas of Karachi (R² = 0.82; RMSE = 0.20). The results of the study will help the stakeholders in planning additional ground stations for operational monitoring of air quality at regional level.

20

Seasonal variation in the chemical composition and morphology of aerosol particles in the centre of Katowice, Poland

63%

Wawros A., Talik E., Zelechower M., Pastuszka J. S., Skrzypek D., Ujma Z.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 5

PM-2.5 and PM-10 samples were collected in the centre of Katowice, Poland during February to May 2001. They were analyzed by gravimetry, X-ray photoelectron spectroscopy and scanning electron microscopy combined with an energy dispersive spectrometer and electron paramagnetic resonance. The combination of these methods allows us to analyze elemental composition, size and morphology of more than three hundred individual atmospheric particles. The composition of the aerosol particles is strongly influenced by meteorological conditions such as wind speed and direction. Mineral elements mainly existed in large-size particles. The anthropogenic pollution elements, however, are contained in corpuscles (< 2 ^m). In comparison with the situation in the wintertime, the number of particles rich in some heavy metals in springtime was found to be lower. The EPR spectra are complex and their features correspond to: I type: Cu2+ centra in a low-symmetry host site, II type: radical species in the soot, which appears as the paramagnetic pyrolyzed product.

Ograniczanie wyników

Microorganisms in the air over wastewater treatment plants

Lidar-based investigations of optical extinction in the marine boundary layer over the coastal area

Using the aerosol of SiO2/ZrO2 catalyst nanoparticles to obtain gasoline and diesel from vacuum gasoil

Ventiljatornoe opryskivanie vinogradnikov kak process filtrovanija aehrozolejj

Developing computer-integrated control system for reactor of nanocatalytic petroleum products refining

Lidar observation of aerosol transformation in the atmospheric boundary layer above the Baltic Sea

Endotoxin levels as a potential marker of concentration of Gram-negative bacteria in water effluent from dental units and dental aerosols

Dependence of the surf zone aerosol on wind direction and wind speed at a coastal site on the Baltic Sea

Sulphates in particles of different sizes in the marine boundary layer over the Southern Baltic Sea

Preliminary results of lidar based studies of the aerosol vertical distribution in the lower troposphere over urban coastal areas

Laser ablation studies of solid aerosols on the Baltic coast