NDLI: Evaluation of Metal Mobility and Bioaccessibility in Soils of Urban Vegetable Gardens Using Sequential Extraction

Content Provider	Springer Nature Link
Author	Szolki, Zsuzsanna Farsang, Andrea
Copyright Year	2013
Abstract	Urban soils are recipients of a variety of pollutants, including the toxic heavy metals, which can accumulate in these soils. The consumption of vegetables and fruits grown in urban gardens with elevated heavy metal content may pose a health risk to residents, because the plants can absorb the heavy metals to different degrees depending on a number of factors (soil properties, forms of metals, plant specific factors, etc.). Total metal content and heavy metal fractions were determined using a sequential extraction procedure in the soils of urban vegetable gardens in order to assess both mobile and potentially mobile amounts of heavy metals in these soils. The heavy metal content of different vegetable types grown in these gardens and those soil properties relevant to controlling metal mobility were also investigated. Soil properties of the studied vegetable gardens influenced metal retention positively, but these soils were not heavily contaminated with metals. The high content of total Pb, Cu, Zn and Cd in the mobile and potentially mobile fractions did, however, indicate a possible anthropogenic enrichment of these metals. The vegetables grown in these gardens accumulated no toxic metal content but the concentration of Cu in the studied vegetables was generally higher than the mean Cu content of different plant foodstuffs, clearly indicating an anthropogenic impact on the Cu status of these soils. Based on the calculated bioaccumulation indices and in accordance with the result of the sequential extraction, Zn and Cd were the most mobile elements in the present soil–plant system.
Starting Page	1
Ending Page	16
Page Count	16
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	224
Issue Number	10
e-ISSN	15732932
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-09-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soils of urban vegetable gardens Heavy metals Sequential extraction Mobilisation Bioaccumulation Environment Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Soil Science & Conservation Hydrogeology Climate Change
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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