NDLI: Heavy metals in the soil–plant system of the Don River estuarine region and the Taganrog Bay coast

Content Provider	Springer Nature Link
Author	Minkina, Tatiana M. Nevidomskaya, Dina G. Pol’shina, Tatiana N. Fedorov, Yuri A. Mandzhieva, Saglara S. Chaplygin, Victor A. Bauer, Tatiana V. Burachevskaya, Marina V.
Copyright Year	2016
Abstract	The aim of this work was to study the level and degree of mobility of heavy metals in the soil–plant system and to perform bioindication observations in the Don River estuarine region and the Russian sector of the Taganrog Bay coast.The objects of the study included samples of zonal soils (chernozem) and intrazonal soils (alluvial meadow and alluvial-stratified soils, Solonchak, sandy primitive soil) from monitoring stations of the Don river estuarine region and the Taganrog Bay coast, as well as their higher plants: Phragmites australis Cav., Typha angustifolia L., Carex riparia Curtis, Cichorium intybus L., Bolboschoenus maritimus L. Palla, and Rumex confertus Willd. The total concentrations of Mn, Ni, Cd, Cu, Zn, Pb, and Cr in the soils were determined by X-ray fluorescent scanning spectrometer. The concentration of heavy metal mobile forms exchangeable, complex compounds, and acid-soluble metal were extracted using the following reagents: 1 N NH$_{4}$Ac, pH 4.8; 1 % EDTA in NH$_{4}$Ac, pH 4.8; 1 N HCl, respectively. Heavy metals in plants were prepared for analysis by dry combustion at 450 °C. The heavy metal concentration in extracts from plants and soils was determined by AAS.The total contents of heavy metals in the soil may be described with a successively decreasing series: Mn > Cr > Zn > Ni > Cu > Pb > As > Cd. The total concentrations of As, Cd, and Zn in the soil exceed the maximum permissible concentrations levels. Contamination of alluvial soils in the estuarine zone with mobile Сu, Zn, Pb, and Cd has been revealed, which is confirmed by the high bioavailability of Cu and Zn and, to a lesser degree, Cd and Pb accumulating in the tissues of macrophytic plants. Data on the translocation of elements to plant organs have showed their predominant accumulation in the roots. Bioindication by the morphofunctional parameters of macrophytic plants (with a Typha L. species as an example) can be used for revealing the existence of impact zones with elevated contents of metals in aquatic ecosystems.The results revealed that increased content of Zn, Pb, Cu, Ni, and As in soil have anthropogenic sources. The high content of Cr in the soils is related to the lithogenic factor and, hence, has a natural source.
Starting Page	1474
Ending Page	1491
Page Count	18
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	17
Issue Number	5
e-ISSN	16147480
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-02-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bioindication Macrophytic plants Contamination Estuarine region Heavy metals Mobile compounds Soils Soil Science & Conservation Environment Environmental Physics
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

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