Decamethylcyclopentasiloxane (D5) spiked sediment: Bioaccumulation and toxicity to the benthic invertebrate Hyalella azteca

被引：16

作者：

Norwood, W. P. ^{[1
]}

Alaee, M. ^{[1
]}

Sverko, E. ^{[2
]}

Wang, D. ^{[1
]}

Brown, M. ^{[1
]}

Galicia, M. ^{[3
]}

机构：

[1] Environm Canada, Aquat Ecosyst Protect Res Div, Burlington, ON L7R 4A6, Canada

[2] Environm Canada, Natl Lab Environm Testing, Burlington, ON L7R 4A6, Canada

[3] Univ Waterloo, Waterloo, ON N2L 3G1, Canada

来源：

CHEMOSPHERE | 2013年 / 93卷 / 05期

关键词：

Hyalella; Decamethylcyclopentasiloxane; Toxicity; Bioaccumulation; BAF; BSAF;

D O I：

10.1016/j.chemosphere.2012.10.052

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Chronic toxicity and bioaccumulation of decamethylcyclopentasiloxane (D5) to Hyalella azteca was examined in a series of spiked sediment exposures. Juvenile H. azteca were exposed for 28 d (chronic) to a concentration series of D5 in two natural sediments of differing organic carbon content (O.C.) and particle size composition. The chronic, LC50s were 191 and 857 mu g D5 g(-1) dry weight for Lakes Erie (0.5% O.C.) and Restoule (11% O.C.) respectively. Inhibition of growth only occurred with the L Restoule spiked sediment with a resultant EC25 of 821 mu g g(-1) dw. Lethality was a more sensitive endpoint than growth inhibition. Biota sediment accumulation factors (BSAFs, 28 d) were <1 indicating that 05 did not bioconcentrate based on lipid normalized tissue concentrations and organic carbon normalized sediment concentrations. Organic carbon (OC) in the sediment appeared to be protective, however normalization to OC did not normalize the toxicity. Normalization of D5 concentrations in the sediments to sand content did normalize the toxicity and LC50 values of 3180 and 3570 mu g D5 g(-1) sand dw were determined to be statistically the same. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：805 / 812

页数：8

共 25 条

[1] BIOACCUMULATION OF PCBS FROM SEDIMENTS BY OLIGOCHAETES AND FISHES - COMPARISON OF LABORATORY AND FIELD STUDIES [J].

ANKLEY, GT ;

COOK, PM ;

CARLSON, AR ;

CALL, DJ ;

SWENSON, JA ;

CORCORAN, HF ;

HOKE, RA .

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 1992, 49 (10) :2080-2085

[2]

[Anonymous], 2007, DECAMETHYLCYCLOPENTA, V141

[3] Toxicity and bioaccumulation of thallium in Hyalella azteca, with comparison to other metals and prediction of environmental impact [J].

Borgmann, U ;

Cheam, V ;

Norwood, WP ;

Lechner, J .

ENVIRONMENTAL POLLUTION, 1998, 99 (01) :105-114

[4] Sediment toxicity testing using large water-sediment ratios: an alternative to water renewal [J].

Borgmann, U ;

Norwood, WP .

ENVIRONMENTAL POLLUTION, 1999, 106 (03) :333-339

[5] Re-evaluation of metal bioaccumulation and chronic toxicity in Hyalella azteca using saturation curves and the biotic ligand model [J].

Borgmann, U ;

Norwood, WP ;

Dixon, DG .

ENVIRONMENTAL POLLUTION, 2004, 131 (03) :469-484

[6] CHRONIC TOXICITY OF AMMONIA TO THE AMPHIPOD HYALELLA-AZTECA - IMPORTANCE OF AMMONIUM ION AND WATER HARDNESS [J].

BORGMANN, U .

ENVIRONMENTAL POLLUTION, 1994, 86 (03) :329-335

[7]

Borgmann U., 2002, NWRI Contribution 02-332

[8]

Borgmann U, 2005, SMALL -SCALE FRESHWATER TOXICITY INVESTIGATIONS, VOL 1 - TOXICITY TEST METHODS, P413, DOI 10.1007/1-4020-3120-3_13

[9]

Chandra G., 1997, ANTHROPOGENIC COMP H, V3

[10]

Dalton J.A., 1994, AERTN9414 NWRI

← 1 2 3 →