Responses of Lumbriculus variegatus to Activated Carbon Amendments in Uncontaminated Sediments

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• 作者：Inna Nybom ; David Werner ; Matti T. Lepp盲nen ; George Siavalas ; Kimon Christanis ; Hrissi K. Karapanagioti ; Jussi V. K. Kukkonen ; Jarkko Akkanen
• 刊名：Environmental Science & Technology (ES&T)
• 出版年：2012
• 出版时间：December 4, 2012
• 年：2012
• 卷：46
• 期：23
• 页码：12895-12903
• 全文大小：367K
• 年卷期：v.46,no.23(December 4, 2012)
• ISSN：1520-5851

文摘

Activated carbon (AC) amendment is a recently developed sediment remediation method. The strong hydrophobic organic contaminant sorption efficiency of AC has been shown in several studies, but effects on benthic organisms require more investigation. The AC induced effects on egestion rate, growth and reproduction of Lumbriculus variegatus were studied by applying bituminous coal based AC in three different particle size fractions, namely <63 渭m (90%, AC_p), 63鈥?00 渭m (AC_m) and 1000 渭m (AC_g), to natural uncontaminated (HS) and artificial sediment (AS). Egestion rate, growth and reproduction decreased with increasing AC concentration and finer AC particle fractions, effects being stronger on HS than on AS sediment. Lipid content in AS was reduced already at the lowest AC doses applied (AC_p and AC_m 0.05%, AC_g 0.25%). In addition, hormesis-like response was observed in growth (AS) and reproduction (AS, HS) indicating that AC may disturb organisms even at very low doses. Potential ecological effects need to be further evaluated in an amendment- and site-specific manner.