About: Response of Enchytraeus crypticus worms to high metal levels in tropical soils polluted by copper smelting     Goto   Sponge   NotDistinct   Permalink

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Description
  • Tropical soils from the vicinity of the Mufulira copper smelter (Zambian Copperbelt) were found to contain high levels of metals, particularly in the upper parts of soil horizons. Metal concentrations varied within the ranges: 37-8980 mg Cu/kg, 3-46 mg Co/kg, <2.5-42 mg Pb/kg, and 16-83 mg Zn/kg. The EDTA extractions indicated that a considerable percentage of the metals were bound in the %22labile%22 fractions of the soil (up to 55% of total Cu concentration, 36% Co, 41% Pb, 30% Zn). The mineralogical investigation of the heavy mineral fraction of the most contaminated soil showed that the Cu is mainly present as Cu-(Fe) sulphides (chalcocite, chalcopyrite), metallic Cu, complex Cu-(Fe) oxides, and Cu-bearing sulphates. To determine the toxicity of these soils, we adopted a standardized OECD reproduction test using Enchytraeus cryptic-us. The number of reproduced enchytraeids correlated negatively with total Cu and Co concentrations (r = -0.97 and -0.94 at p < 0.001, respectively), and EDTA-extractable Cu (r = -0.89, p <0.001); whereas no effects of the soil properties (pH, CEC, C-org) were observed. No reproduction was possible in soils with Cu levels >5000 mg/kg. Median effect concentration (EC50) was calculated for total Cu concentration, and corresponded to 351 mg/kg.
  • Tropical soils from the vicinity of the Mufulira copper smelter (Zambian Copperbelt) were found to contain high levels of metals, particularly in the upper parts of soil horizons. Metal concentrations varied within the ranges: 37-8980 mg Cu/kg, 3-46 mg Co/kg, <2.5-42 mg Pb/kg, and 16-83 mg Zn/kg. The EDTA extractions indicated that a considerable percentage of the metals were bound in the %22labile%22 fractions of the soil (up to 55% of total Cu concentration, 36% Co, 41% Pb, 30% Zn). The mineralogical investigation of the heavy mineral fraction of the most contaminated soil showed that the Cu is mainly present as Cu-(Fe) sulphides (chalcocite, chalcopyrite), metallic Cu, complex Cu-(Fe) oxides, and Cu-bearing sulphates. To determine the toxicity of these soils, we adopted a standardized OECD reproduction test using Enchytraeus cryptic-us. The number of reproduced enchytraeids correlated negatively with total Cu and Co concentrations (r = -0.97 and -0.94 at p < 0.001, respectively), and EDTA-extractable Cu (r = -0.89, p <0.001); whereas no effects of the soil properties (pH, CEC, C-org) were observed. No reproduction was possible in soils with Cu levels >5000 mg/kg. Median effect concentration (EC50) was calculated for total Cu concentration, and corresponded to 351 mg/kg. (en)
Title
  • Response of Enchytraeus crypticus worms to high metal levels in tropical soils polluted by copper smelting
  • Response of Enchytraeus crypticus worms to high metal levels in tropical soils polluted by copper smelting (en)
skos:prefLabel
  • Response of Enchytraeus crypticus worms to high metal levels in tropical soils polluted by copper smelting
  • Response of Enchytraeus crypticus worms to high metal levels in tropical soils polluted by copper smelting (en)
skos:notation
  • RIV/00216208:11310/14:10281817!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GAP210/12/1413), Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika
  • SEPTEMBER
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 42474
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11310/14:10281817
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Zambian Copperbelt; mufulira; Enchytraeus crypticus; toxicity; copper smelting; soils (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [0BBCAFA5644A]
http://linked.open...i/riv/nazevZdroje
  • Journal of Geochemical Exploration
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 144
http://linked.open...iv/tvurceVysledku
  • Mihaljevič, Martin
  • Ettler, Vojtěch
  • Šebek, Ondřej
  • Konečný, Ladislav
  • Nyambe, Imasiku
  • Kribek, Bohdan
  • Barros Amorim, Monica Joao
  • Kristiansen, Soren Munch
  • Scott-Fordsmand, Janeck James
http://linked.open...ain/vavai/riv/wos
  • 000342247800005
http://linked.open...n/vavai/riv/zamer
issn
  • 0375-6742
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.gexplo.2013.10.004
http://localhost/t...ganizacniJednotka
  • 11310
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