Journal
ENVIRONMENTAL POLLUTION
Volume 157, Issue 8-9, Pages 2224-2230Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.04.009
Keywords
Organochlorine pesticides; Activated carbon; Trace elements; Cucurbitaceae; Sequestration
Categories
Funding
- COST Switzerland
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Activated charcoal (AC) amendments have been suggested as a promising, cost-effective method to immobilize organic contaminants in soil. We performed pot experiments over two years with cucumber (Cucumis sativus L) grown in agricultural soil with 0.07 mg kg(-1) of weathered dieldrin and 0, 200, 400, and 800 mg AC per kg soil. Dieldrin fresh weight concentrations in cucumber fruits were significantly reduced from 0.012 to an average of 0.004 mg kg(-1), and total uptake from 2 to 1 mu g in the 800 mg kg(-1) AC treatment compared to the untreated soil. The treatment effects differed considerably between the two years, due to different meteorological conditions. AC soil treatments did neither affect the availability of nutrients to the cucumber plants nor their yield (total fruit wet weight per pot). Thus, some important prerequisites for the successful application of AC amendments to immobilize organic pollutants in agricultural soils can be considered fulfilled. (C) 2009 Published by Elsevier Ltd.
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