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Mobility and toxicity of metals in sandy sediments deposited on land Prokop, Z.; Vangheluwe, M.L.; Van Sprang, P.A.; Janssen, C.R.; Holoubek, I. (2003). Mobility and toxicity of metals in sandy sediments deposited on land. Ecotoxicol. Environ. Saf. 54(1): 65-73. https://dx.doi.org/10.1016/S0147-6513(02)00022-2 In: Ecotoxicology and Environmental Safety. Academic Press/Elsevier: Amsterdam, Netherlands etc. ISSN 0147-6513; e-ISSN 1090-2414

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Beschikbaar in	Auteurs
VLIZ: Non-open access 354184 [ aanvragen ]

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Trefwoorden

Bioavailability Chemical elements > Metals > Heavy metals Chemical elements > Metals > Heavy metals > Cadmium Chemical elements > Metals > Heavy metals > Zinc Interstitial water Laboratory studies Leaching Mobility Pollutants Risk analysis Sediments Soil pollution Tests > Toxicity tests Toxicity [WoRMS]; Annelida [WoRMS]; Arthropoda [WoRMS]; Cruciferae; Crustacea [WoRMS]; Enchytraeidae d'Udekem, 1855 [WoRMS]; Enchytraeus albidus Henle, 1837 [WoRMS]; Invertebrata [Ongewervelden]; Lolium perenne L.; Oligochaeta [WoRMS]; Raphanus sativus; Spermatophyta [Zaadplanten]

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Auteurs		Top
Prokop, Z. Vangheluwe, M.L. Van Sprang, P.A.	Janssen, C.R. Holoubek, I.

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Abstract

A times series of laboratory experiments were conducted to investigate the effect of land deposition of contaminated sediments on the bioavailability and mobility of metals. Four sandy sediments were sampled at sites expected to have elevated levels of cadmium and zinc. The physical and chemical characteristics and ecotoxicity of sediments, pore waters, and leachates were evaluated after periods ranging from 1 to 45 days of land deposition. Cd and Zn retardation and leaching potential were calculated and this simulation gave good predictions of subsequently observed Cd and Zn mobility. The mobility and leaching of Cd and Zn in the sediments increased with decreasing pH and with decreasing content of organic matter. During the deposition an increase in sediment toxicity to plants and an increase in eluate toxicity to invertebrates were observed. A high rate of water flow through the sediment resulted in a lower toxicity enhancement of the sediments and a higher toxicity enhancement of the eluates. This result suggests that water flow through the sediment reduces the actual toxicity of the upper layer of deposited sediment but at the same time intensifies the risk of groundwater contamination.

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