Caddisflies Hydropsyche spp. as biomonitors of trace metal bioavailability thresholds causing disturbance in freshwater stream benthic communities

2016 ◽  
Vol 216 ◽  
pp. 793-805 ◽  
Author(s):  
Zmnako A. Awrahman ◽  
Philip S. Rainbow ◽  
Brian D. Smith ◽  
Farhan R. Khan ◽  
Wojciech Fialkowski
Keyword(s):  
Trace Metal ◽  
Benthic Communities ◽  
Metal Bioavailability ◽  
Freshwater Stream

Predicting trace metal bioavailability to chironomids in sediments by diffusive gradients in thin films

2018 ◽  
Vol 636 ◽  
pp. 134-141 ◽  
Author(s):  
Yan He ◽  
Changsheng Guo ◽  
Jiapei Lv ◽  
Song Hou ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Trace Metal ◽  
Metal Bioavailability ◽  
Diffusive Gradients

Estimates of trace metal bioavailability to humans ingesting contaminated oysters

2004 ◽  
Vol 42 (11) ◽  
pp. 1893-1902 ◽  
Author(s):  
V. Bragigand ◽  
B. Berthet ◽  
J.C. Amiard ◽  
P.S. Rainbow
Keyword(s):  
Trace Metal ◽  
Metal Bioavailability

Acute dietary pre-exposure and trace metal bioavailability to the barnacle Balanus amphitrite

2004 ◽  
Vol 311 (2) ◽  
pp. 315-337 ◽  
Author(s):  
Philip S. Rainbow ◽  
Tania Y.-T. Ng ◽  
Dalin Shi ◽  
Wen-Xiong Wang
Keyword(s):  
Trace Metal ◽  
Metal Bioavailability ◽  
Balanus Amphitrite

The Red Mud Accident in Ajka (Hungary): Plant Toxicity and Trace Metal Bioavailability in Red Mud Contaminated Soil

2011 ◽  
Vol 45 (4) ◽  
pp. 1616-1622 ◽  
Author(s):  
Stefan Ruyters ◽  
Jelle Mertens ◽  
Elvira Vassilieva ◽  
Boris Dehandschutter ◽  
André Poffijn ◽  
...  
Keyword(s):  
Trace Metal ◽  
Contaminated Soil ◽  
Red Mud ◽  
Metal Bioavailability ◽  
Plant Toxicity

Complexation of Lead in Model Solutions of Humic Acid: Heterogeneity and Effects of Competition with Copper, Nickel, and Zinc

2006 ◽  
Vol 3 (4) ◽  
pp. 276 ◽  
Author(s):  
Ismail I. Fasfous ◽  
C. L. Chakrabarti ◽  
John Murimboh ◽  
Tahir Yapici
Keyword(s):  
Humic Acid ◽  
Trace Metals ◽  
Trace Metal ◽  
Humic Substances ◽  
Metal Concentration ◽  
Natural Waters ◽  
Metal Bioavailability ◽  
Copper Nickel ◽  
Model Solutions ◽  
Equilibrium Function

Environmental Context. Metal bioavailability and toxicity are often related to free metal concentration rather than total metal concentration. Humic substances are chemically and physically heterogeneous complexants for metals in natural waters, and play an important role in trace metal transport, fate, and bioavailability. Metal bioavailability, which depends on chemical speciation of metals, is greatly influenced by the presence of other trace metals and major cations in natural waters. In this work, the effects of heterogeneity of humic substances, and of competition of trace metals on lead speciation in model solutions have been studied to gain a better understanding of these effects on complexation of trace metal lead and its bioavailability. Abstract. Physicochemical heterogeneity of a well characterized humic acid (HA) in its complexation with a trace metal lead in model solutions was investigated using pseudo-polarography at a stationary mercury drop electrode, and the differential equilibrium function (DEF) of Pb(ii)–HA complexes was determined. The complexation of Pb(ii) by HA was determined by taking into account the dependence of the strength of the binding on the metal (Pb) loading. Also investigated were the effects of competition of the trace metals copper, nickel, and zinc on the DEF of Pb(ii)–HA complexes in model solutions. The results showed that these trace metals competed with trace metal lead for binding by HA even when present at the same concentrations as that of lead.

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