Barbara Walna - Academia.edu (original) (raw)

Papers by Barbara Walna

Zeszyty Problemowe Postępów Nauk Rolniczych, 1998

Polish Journal of Environmental Studies, 1999

The influence of simulated acid rain precipitation on selected soil profiles typical of Wielkopol... more The influence of simulated acid rain precipitation on selected soil profiles typical of Wielkopolski National Park was studied. The results prove the release and migration of aluminium among soil phases, depending on soil pH and type. The model studies illustrate the influence of natural and anthropogenic factors on chemical degradation of soil, in particular on metastability of aluminium.

Laboratorium - Przegląd Ogólnopolski, 2012

Własności sorpcyjne osadów z dna Basenu Gdańskiego w rdzeniu M-37/13404-1 Określono ilościowy udz... more Własności sorpcyjne osadów z dna Basenu Gdańskiego w rdzeniu M-37/13404-1 Określono ilościowy udział jonów Na ' , K-, Ca 1-, Mgl. , Fe» i ZOl ' adsorbowanych powierzchniowo oraz w kompleksie sorpcyjnym osadów z rdzenia z dna Basenu Gdańskiego. Na podstawie modelu genetycznego Vu Ngoc-Ky i in. (1981) rozpoziomowano osady pod względem środow i s ka sedymentacyjnego. Wyniki zestawiono z fazami rozwojowymi Bałtyku. Stwierdzono, że osady górnej części rdzenia do 625 cm t worzyły się w środow i sk u morskim o zmiennym zasoleniu (morze litorynowe). Na głębokości 625-655 cm występują osady łagunowe wyslodzone (jezioro ancylusowe), na głębokości 655-965 cm osady morskie (morze yoldiowe) i od 965 cm do spągu osady lagunowe wyslodzone (bałtyckie jezioro lodowe). WSTĘP W artykule przedstawiono wyniki badań sorpcji osadów z rdzenia M-37/ł3404-l o długości 1132 cm pobranego w zachodniej części Basenu Gdańskiego z dna Głębi Gdańskiej z głębokości 100 m (lokalizację rdzenia przedstawiono w artykule T. Szczepańskiej i B. Walnej, 1983). Określono skład jonów wymiennych adsorbowanych powierzchniowo oraz w kompleksie sorpcyjnym. Wyniki badań przeanalizowano w aspekcie zależności własności sorpcyjnych od składu litologicznego osadów. Na podstawie składu kompleksu sorpcyjnego dokonano próby wydzielenia typów środowiska sedymentacyjnego z zastosowaniem modelu genetycznego Vu Ngoc-Ky i in. (1981). Wyróżnione środowiska sedymentacyjne porównano z fazami rozwojowymi Basenu Gdańskiego w późnym plejstocenie i w holocenie (F.B. Pieczka, 1980a, b). Autorzy dziękują serdecznie doc. drowi S. Przeniośl e za konsultacje i życzliwe uwagi podczas przygotowywania artykułu.

Polish Journal of Environmental Studies, 2005

Research on aluminium speciation was performed using a slightly modified version of Tessier's pro... more Research on aluminium speciation was performed using a slightly modified version of Tessier's procedure. The soils under study displayed strongly acidic character (pH KCl of 3.3-4.4). The content of aluminium in the exchangeable (11 mg/kg), acid extractable (67 mg/kg), oxidizable (2650 mg/kg), reducible (658 mg/kg) and residual fraction (24,680 mg/kg) varied widely. The percentage of labile phase (sum minus residual) obtained for mean values in the profile amounted to 12.1%, which may indicate its considerable bioavailability. The soil profile under study displayed a lithogenically dichotomous structure, which was also reflected in the aluminium content in the particular fractions.

Science of The Total Environment, Sep 1, 1998

The previous investigation of the chemical characteristics of precipitation within the Wielkopols... more The previous investigation of the chemical characteristics of precipitation within the Wielkopolski National Park has shown its high acidity which sometimes drops below pH 3.0. This paper deals with calcium and magnesium ion Ž leaching by acid rain from typical soils of the area. Laboratory experiments were conducted on soil monoliths 15 cm. in diameter, 50 cm high with acid solutions of pH 3.0, pH 2.0 and a water control of pH 5.6. The sprinkling lasted 30 days, simulating a rainfall of 400 mm. The eluates were analysed every day. The soil properties and forms of calcium and magnesium were determined before and after treatment. The investigations show that quite large amounts of 2q 2q Ž. Ca and Mg can be leached from soil ᎏ in the very acid treatment pH 2.0 leaching amounted to about 100 mg Ca 2q and 17 mg Mg 2q per kg of soil. The leaching of these elements was several times less in the pH 3.0 and 5.6 treatments. The differences in the dynamics of the process is shown on the leaching curves ᎏ their shapes are smooth when pH is 5.6 and 3.0, while a sharp peak is present at pH 2.0.

Ekologia i Technika, 2005

Chemia Analityczna, 2006

Discriminant analysis has been applied to assess a possibility of distinguishing between polluted... more Discriminant analysis has been applied to assess a possibility of distinguishing between polluted and non-polluted sites by comparing pollutants concentration in rainwater samples. Two discriminant functions related to pH, F , NO 3

Przegląd Komunalny, 2007

Ilość i jakość opadów atmosferycznych na obszarze Poznania zależą od szeregu czynników, takich ja... more Ilość i jakość opadów atmosferycznych na obszarze Poznania zależą od szeregu czynników, takich jak warunki klimatyczne, ukształtowanie terenu i skala emisji zanieczyszczeń. Bez względu jednak na ich charakterystykę istotne dla ekosystemów miejskich jest odpowiednie zagospodarowanie wód opadowych i spływowych. Ma to szczególne znaczenie z uwagi na założenia zrównoważonego rozwoju miasta oraz spełnianie norm prawnych obowiązujących w krajach Unii Europejskiej.

Journal of Integrative Environmental Sciences, Mar 1, 2013

A study was carried out in the Wielkopolski National Park (mid-western Poland) to trace the pathw... more A study was carried out in the Wielkopolski National Park (mid-western Poland) to trace the pathways along which pollutants migrated from an area that was previously in agricultural use. During a 1-year study, major ions (Na þ , NH þ 4 , K þ , Ca 2þ , Mg 2þ , Cl 2 , F 2 , NO 2 3 , NO 2 2 , SO 22 4 and PO 32 4) were determined in groundwater samples from boreholes, the springs that feed Lake Góreckie and the lake itself. The vertical variability of water-soluble constituents of sediments near the lake was also studied. It was found that changes in groundwater-dependent ecosystems are related to the type of sediment, groundwater, springs and lake eutrophication. Nitrate and chloride concentrations in groundwater and springs were found to exceed the water quality standards set by both the Polish national limits and those of the World Health Organisation.

Atmospheric Pollution Research, Jul 1, 2015

ABSTRACT

International Journal of Environmental Analytical Chemistry, Jul 15, 2009

... a * , Barbara Walna b & Jerzy Siepak a pages 901-916. ... Claassen, HC and Halm, DR. 1995... more ... a * , Barbara Walna b & Jerzy Siepak a pages 901-916. ... Claassen, HC and Halm, DR. 1995. Atmos. Environ. , 29: 437 [CrossRef], [Web of Science ®], [CSA] View all references. In order to eliminate the error resulting from evaporation, the special factor is sometimes used. ...

International Journal of Environmental Analytical Chemistry, 2001

In this study levels, fluxes and temporal trend of PAHs are reported in a sediment core from Chun... more In this study levels, fluxes and temporal trend of PAHs are reported in a sediment core from Chungará Lake (18° S) in Northern Chile. The sediments were obtained by Kayac corer and freeze dried. PAHs were extracted in SOXHLET system and measured by HPLC with diode array detector and fluorescence detection. Sedimentary record chronology was determined using 210 Pb isotopes and organic carbon (%) was also measured in sediments. Concentrations (ng g-1 d.w.) of PAHs were low ranging from ~1 to 50. PAHs fingerprint was dominated by 3-ring (21%) and 4-ring. Organic carbon (%) ranged from ~17 to 24 (21±3) and no statistical significant correlation (p<0.05) was detected between OC (%) and PAHs along the sediment core. PAHs fluxes (µg m-2 yr-1) fluctuated from ~0.3 (cm 1) to 35 (cm 5) in 1978. LPAHs/HPAHs ratios (0.04 to 3) indicate petrogenic and pyrolytic origin of PAHs. This results contributes with new information of PAHs deposition at high altitudinal lake in Southern Hemisphere.

Open Chemistry, Mar 1, 2007

A study was made of the sandy and loamy soils of the woodland areas of the Wielkopolski National ... more A study was made of the sandy and loamy soils of the woodland areas of the Wielkopolski National Park (Poland) affected by acid rain. The basic properties of the soils were determined, revealing their strong acidification, poor buffering power, and the possibility of aluminium release. An analysis was made of the content of soluble, exchangeable, organic, amorphous, and free forms of aluminium. The concentration of exchangeable aluminium exceeded that of the form dissolved in soil water several times to tens of times. In soil solutions Ca/Al ratios in some horizons show very low values that could induce a nutrient deficit. In the sandy profiles the ratio even drops below the critical level of 0.1. In the surface horizon the dominant cation at all the sites is the aluminium ion. An analysis of anions shows a dominance of sulphate and chloride ions. In autumn nitrites were recorded at all depth levels, while in spring only in the surface layers. The highest fluoride concentrations were found to occur in profiles situated the closest to the emission source of fluorine compounds. The markedly higher concentrations of ammonium than nitrate ions can lead to increased acidification and eutrophication of the soil.

Environmental Monitoring and Assessment, Dec 16, 2006

Research on precipitation carried out systematically at the University station at Jeziory in the ... more Research on precipitation carried out systematically at the University station at Jeziory in the Wielkopolski National Park (western Poland) allowed the determination of pollutants deposited with precipitation in this forest ecosystem. During 13 years of study, the pH of precipitation was found to persist at a low level (4.33 on average), which resulted a substantial deposition of H +. Values of acidifying and basic ions deposited in this area were determined and compared with the respective figures obtained at selected EMEP stations studying background pollution, the means for Poland, and areas subjected to considerable human impact. The use of the critical load function made it possible to establish that the S and N deposition for 2002-2005 were below its line.

Environmental Monitoring and Assessment, Jul 1, 2011

The migration pathways of heavy metals derived from an area previously in agricultural use was in... more The migration pathways of heavy metals derived from an area previously in agricultural use was investigated in the Wielkopolski National Park (mid-western Poland). The heavy metals involved (Cd, Cu, Cr, Pb, Ni and Zn) were determined in groundwater, the springs that feed Lake Góreckie and the lake itself. In order to show how the heavy metals may be set free and what is their biological availability, soil and sediment samples were subjected to single-stage extraction, using 0.01 M CaCl(2), 0.02 M EDTA, 0.005 M DTPA, 0.1 M HCl, 1 M HCl and de-ionised water. Varying metal concentrations were recorded in the water samples during the study period (from November 2009 to July 2010), usually with higher values in winter and lower ones in summer. The seasonal changes may be ascribed to natural processes taking place in the ground- and surface waters of Lake Góreckie. On the other hand, the concentration levels (mostly of Cd, Pb and Cr) are indicative of anthropogenic activity. It should be mentioned in this context that the highest metal concentrations were found in the soil layer. The concentrations were also found to exceed both the Polish and the World Health Organization water-quality standards. It appears that the soils are highly contaminated, mostly with cadmium. The long-lasting effect of acid precipitation in the area makes it possible for immobile forms to become mobile, thus facilitating further migration into the environment.

International Journal of Environment and Health, 2007

This paper provides the results and assessment of local and transboundary pollution in the Pozna ... more This paper provides the results and assessment of local and transboundary pollution in the Pozna metropolitan area and at the Wielkopolski National Park, Poland. Precipitation that occurred simultaneously in both locations was collected and the analyses such as H , F , Cl , NO 3 , SO 4 2 , Na , K , Mg 2 , Ca 2 and NH 4 and conductivity were determined. The results were subjected to full statistical evaluation and chemometrical analysis: Time Series (TS), Correlation Analysis, Principal Components Analysis (PCA) and Analysis of Variance (ANOVA). TS analysis allowed the observation of noncorresponding peaks on TS graphs and the occurrence of local pollution effects. Correlation analysis and PCA indicated a strong correlation between the concentrations of analytes determined in samples collected at both sites, especially those that originate from anthropogenic sources. This indicates that pollutants emitted in the metropolitan area or from remote sources might significantly influence the nearby area. ANOVA, supported with the prevailing wind direction analysis, showed a minor influence of the cross-border transport of pollutants.

Journal of Atmospheric Chemistry, 2009

... Żaneta Polkowska & Mieczysław Sobik & Marek Błaś & Kamila Klimaszewska & Barb... more ... Żaneta Polkowska & Mieczysław Sobik & Marek Błaś & Kamila Klimaszewska & Barbara Walna & Jacek Namieśnik ... On the other hand 4 of these sites belong to urban and 4 to rural category. pH, conductivity, SO4 2−, NO3 − , Cl − , H+, NH4 +, Ca2+, Mg2+, Na+, K+ have ...