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001-es BibID:BIBFORM096154
Első szerző:Braun Mihály (vegyész, analitikus)
Cím:Environmental monitoring using linden tree leaves as natural traps of atmospheric deposition: a pilot study in Transilvania, Romania / Mihály Braun, Zita Margitai, Albert Tóth, Martine Leermakers
Dátum:2007
ISSN:1789-4921 1789-7556
Megjegyzések:Atmospheric pollution caused by toxic elements is an emerging problem of concern. Tree leaves have been widely used as indicator of atmospheric pollutions and they are effective alternatives to the more usual biomonitoring methods. Tree leaves can be used as natural traps of atmospheric deposition. Elemental composition of dust deposited onto leaf surfaces can be used to characterize the urban environment. A pilot survey including 16 Romanian settlements was carried out in order to evaluate the characteristics and sources of air pollutants. Tree leaves (Tilia tomentosa, Tilia cordata, Tilia platyphyllos) were collected and used for the measurements. Elemental analyses were carried out by ICP-OES and ICP-MS. Principal component and discriminant analyses were used to characterizing and estimating the level of pollution. Settlements were grouped on the basis of discriminant function values. Multivariate comparison of chemical data ordered the settlements into 3 main groups, which showed a systematic geographic distribution.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
biomonitoring
air pollution
Tilia
ICP-OES
dust deposition
Megjelenés:Acta geographica Debrecina. Landscape & environment series. - 1 : 1 (2007), p. 24-35. -
További szerzők:Margitai Zita (1977-) (okleveles vegyész) Tóth Albert (1966-) (biológus-ökológus) Leermakers, Martine
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001-es BibID:BIBFORM005253
Első szerző:Szabó Szilárd (geográfus)
Cím:Heavy metal content of flood sediments and plants near the river Tisza / Szilárd Szabó, József Posta, Gyöngyi Gosztonyi, Ilona Mészáros, József Prokisch
Dátum:2008
Megjegyzések:The River Tisza is Hungary's especially important river. It is significant not only because of the source of energy and the value insured by water (hydraulical power, shipping route, stock of fish, aquatic environment etc.) but the active floodplain between levees as well. Ploughlands, orchards, pastures, forests and oxbow lakes can be found here. They play a significant role in the life of the people living near the river and depend considerably on the quality of the sediments settled by the river. Several sources of pollution can be found in the catchment area of the River Tisza and some of them significantly contribute to the pollution of the river and its active floodplain. In this paper we study the concentration of zinc, copper, nickel and cobalt in sediments settled in the active floodplain and the ratio of these metals taken up by plants. Furthermore, our aim was to study the vertical distribution of these elements by the examination of soil profiles. The metal content of the studied area does not exceed the critical contamination level, except in the case of nickel, and the ratio of metals taken up by plants does not endanger the living organisms. The vertical distribution of metals in the soil is heterogeneous, depending on the ratio of pollution coming from abroad and the quality of flood.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény hazai lapban
nehézfém
Tisza
heavy metal
sediments
üledék
River Tisza
active floodplain
heavy metal content
plants
Megjelenés:Acta Geographica Debrecina Landscape and Environment Series. - 2 : 2 (2008), p. 120-131. -
További szerzők:Posta József (1948-) (vegyész, analitikus) Gosztonyi Gyöngyi Mészáros Ilona (1952-) (biológus) Prokisch József (1966-) (vegyész)
Internet cím:elektronikus változat
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