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Pb-210 Isotope as a Pollutant Emission Indicator / Izotop Pb-210 Jako Znacznik Emisji Zanieczyszczeń

100%

Dołhańczuk-Śródka A., Ziembik Z., Kříž J., Hyšplerova L., Wacławek M.

Ecological Chemistry and Engineering S

2015

vol. 22

issue 1

73-81

Passive biomonitoring using 210Pb was used in the paper to evaluate pollutant deposition. Well-developed epiphytic foliose lichens Hypogymnia physodes growing on spruce branches were used in the studies. The samples of mosses Pleurozium schreberi and soil (raw humus) were collected from the area around the tree from which the samples of lichens were collected. The studies have shown that it is possible to identify dust emission sources using a radioactive lead isotope (210Pb). The highest activity of 210Pb was observed in areas with increased deposition of other pollutants, such as Ni, Cd, Cu and Pb, which may indicate that 210Pb is one of the emission components

W pracy zastosowano biomonitoring pasywny, z wykorzystaniem 210Pb, do oceny depozycji zanieczyszczeń. Do badań wykorzystano dobrze wykształcone epifityczne porosty listkowate Hypogymnia physodes, porastające gałęzie świerka. Wokół drzewa, z którego pobrano próbki porostów, pobierano próbki mchów Pleurozium schreberi oraz gleby - próchnicy nadkładowej. W prowadzonych badaniach stwierdzono, że możliwa jest identyfikacja źródeł emisji pyłu przy wykorzystaniu radioaktywnego izotopu ołowiu - 210Pb. Największe aktywności 210Pb zaobserwowano na terenach o zwiększonej depozycji innych zanieczyszczeń, np. Ni, Cd, Cu i Pb, co może wskazywać, że 210Pb jest jednym z komponentów emisji

Isotope analyses of the lake sediments in the Plitvice Lakes, Croatia

71%

Horvatinčić N., Sironić A., Barešić J., Bronić I., Nikolov J., Todorović N., Hansman J., Krmar M.

Open Physics

2014

vol. 12

issue 10

707-713

The analyses of radioactive isotopes 14C, 137Cs and 210Pb, and stable isotope 13C were performed in the sediment cores, top 40 cm, taken in 2011 from karst lakes Prošće and Kozjak in the Plitvice Lakes National Park, central Croatia. Frozen sediment cores were cut into 1 cm thick layers and dried. 14C activity in both carbonate and organic fractions was measured using accelerator mass spectrometry technique with graphite synthesis. 137Cs, 210Pb, 214Pb and 214Bi were measured by low level gamma spectrometry method on ORTECHPGe detector with the efficiency of 32%. Distribution of 14C activity from both lakes showed increase of the 14C activity in the top 10–12 cm in both carbonate and organic fractions as a response to thermonuclear bomb-produced 14C in the atmosphere in the sixties of the 20th century. Anthropogenically produced 137Cs was also observed in sediment profiles. Sedimentation rates for both lake sediments were estimated based on the unsupported 210Pb activity. Different 14C activity of the carbonate fraction (63–80 pMC, percent of modern carbon) and organic fraction (82–93 pMC) is the result of geochemical and biological processes of the sediment precipitation in the lake waters. This is also confirmed by the δ 13 C values of both fractions. Carbon isotope composition, a 14 C and δ 13 C, was compared with the lake sediments from the same lakes collected in 1989 and 2003.

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1 Ecological Chemistry and Engineering S

1 Open Physics

1 2015

1 2014

1 Barešić J.

1 Bronić I.

1 Dołhańczuk-Śródka A.

1 Hansman J.

1 Horvatinčić N.

1 Hyšplerova L.

1 Krmar M.

1 Kříž J.

1 Nikolov J.

1 Sironić A.

1 Todorović N.

1 Wacławek M.

1 Ziembik Z.

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Pb-210 Isotope as a Pollutant Emission Indicator / Izotop Pb-210 Jako Znacznik Emisji Zanieczyszczeń

Isotope analyses of the lake sediments in the Plitvice Lakes, Croatia