Modification of metal partitioning by supplementing acid volatile sulfide in freshwater sediments

1999 ◽  
Vol 18 (5) ◽  
pp. 858-864 ◽  
Author(s):  
Edward N. Leonard ◽  
David R. Mount ◽  
Gerald T. Ankley
Keyword(s):  
Acid Volatile Sulfide ◽  
Metal Partitioning ◽  
Freshwater Sediments

Predicting the acute toxicity of copper in freshwater sediments: Evaluation of the role of acid-volatile sulfide

1993 ◽  
Vol 12 (2) ◽  
pp. 315-320 ◽  
Author(s):  
Gerald T. Ankley ◽  
Vincent R. Mattson ◽  
Edward N. Leonard ◽  
Corlis W. West ◽  
Jon L. Bennett
Keyword(s):  
Acute Toxicity ◽  
Acid Volatile Sulfide ◽  
Freshwater Sediments

A field investigation of the relationship between zinc and acid volatile sulfide concentrations in freshwater sediments

1996 ◽  
Vol 5 (4) ◽  
pp. 255-264 ◽  
Author(s):  
Gerald T. Ankley ◽  
Karsten Liber ◽  
Daniel J. Call ◽  
Thomas P. Markee ◽  
Timothy J. Canfield ◽  
...  
Keyword(s):  
Field Investigation ◽  
Acid Volatile Sulfide ◽  
Freshwater Sediments ◽  
The Relationship

scholarly journals Trace metal partitioning and potential mobility in the naturally acidic sediment of Lake Caviahue, Neuquén, Argentina

2020 ◽  
Vol 47 (1) ◽  
pp. 46 ◽  
Author(s):  
Juan Manuel Cabrera ◽  
Pedro Félix Temporetti ◽  
Fernando Luis Pedrozo
Keyword(s):  
Organic Matter ◽  
Trace Metal ◽  
Metal Content ◽  
Limit Of Detection ◽  
Sediment Quality ◽  
Extraction Procedure ◽  
Metal Mobility ◽  
Acid Volatile Sulfide ◽  
Lake Basin ◽  
Metal Partitioning

Lake Caviahue, in Patagonia (Argentina), is a very acid water body (Patagonia, Argentina) due to the influx of volcanic fluids. Over the past 18 years, the lake has been progressively alkalinizing and pH is close to the ferric iron precipitation threshold (pH>3,0). Should iron precipitate, wáter and sediment composition will be altered. To set a baseline, trace metal partitioning (Cu, Cd, Cr, Pb, Zn and Mn) was studied for three sediment cores (0 to 16 cm depth) at three sampling stations using a sequential extraction procedure (SEP) and the acid volatile sulfide/simultaneously extracted metals (AVS/SEM) protocol. The total metals content of the sediments ranged between 0 to 408 μg g-1 of dry sediment, with Pb>Cr>Mn>Cu>Zn>Cd. No Cd was measured above the limit of detection. The sediment was richest in Mn and Cr, two non-toxic metals at the pH / Eh combination of the lake basin. Total Pb was at a moderate contamination level although it is associated with the most recalcitrant fraction and therefore has low mobility. The sediment fractions with higher metal content were the oxidizable and residual, the former commonly associated with labile organic matter and pyrite while the latter are related to recalcitrant organic matter and rock forming minerals. In addition, a high correlation was found between Cr, Pb and Mn,thus these metals may be subject to analogous precipitation processes and possibly to co-variation in the volcano effluents. Furthermore, no metals were detected in the exchangeable/carbonates fraction, which is the most labile of all the sediment fractions. The metal content in (SEM) was likewise below the toxicity thresholds of two international sediment quality guidelines and the ratio AVS/SEM was over one, indicative of non-toxicity. Both results indicate that metal mobility in the acidic sediments of lake Caviahue is very low.

The role of acid-volatile sulfide in determining cadmium bioavailability and toxicity in freshwater sediments

1991 ◽  
Vol 10 (10) ◽  
pp. 1309-1319 ◽  
Author(s):  
Anthony R. Carlson ◽  
Gary L. Phipps ◽  
Vincent R. Mattson ◽  
Patricia A. Kosian ◽  
Anne M. Cotter
Keyword(s):  
Acid Volatile Sulfide ◽  
Freshwater Sediments ◽  
Cadmium Bioavailability

Survey for Tributyltin in Water and Sediment in Canada in 1999

2005 ◽  
Vol 40 (4) ◽  
pp. 431-447 ◽  
Author(s):  
R. James Maguire ◽  
Suzanne P. Batchelor
Keyword(s):  
Acute Toxicity ◽  
Pest Control ◽  
Marine Sediments ◽  
Chronic Toxicity ◽  
Aquatic Organisms ◽  
Benthic Organisms ◽  
Freshwater Sediments ◽  
Antifouling Paints ◽  
Water And Sediment ◽  
Small Craft

Abstract A survey of water and sediment from 152 harbours, marinas and shipping channels across Canada was conducted in 1999 to determine the extent of contamination by tributyltin (TBT) prior to the total ban on its antifouling uses being phased in over the period 2003 to 2008, and to assess the effectiveness of the 1989 regulation of antifouling uses of TBT under the Canadian Pest Control Products Act. TBT was found in sediments in this survey much more frequently than in water. The main conclusion was that by 1999 the regulation had been generally effective in reducing TBT contamination in water, but not sediment, in small-craft marinas and harbours. TBT continued to be found in some freshwater and seawater locations frequented by larger vessels, that could have been legally painted at the time with TBT antifouling paints, at concentrations that could cause chronic toxicity to aquatic organisms. TBT was also found in many marine sediments, and some freshwater sediments, at concentrations that could cause chronic toxicity to sensitive benthic organisms. In addition, TBT concentrations in many marine sediments could cause acute toxicity to sensitive benthic organisms. Because of the long persistence of TBT in sediments, it may pose a hazard to benthic organisms in some locations in Canada for many years after the total ban on antifouling uses of TBT.

scholarly journals Microbiological and Geochemical Heterogeneity in an In Situ Uranium Bioremediation Field Site

2005 ◽  
Vol 71 (10) ◽  
pp. 6308-6318 ◽  
Author(s):  
Helen A. Vrionis ◽  
Robert T. Anderson ◽  
Irene Ortiz-Bernad ◽  
Kathleen R. O'Neill ◽  
Charles T. Resch ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Acid Volatile Sulfide ◽  
Rrna Gene ◽  
Gene Sequences ◽  
16S Rrna Gene Sequences ◽  
Geochemical Heterogeneity

ABSTRACT The geochemistry and microbiology of a uranium-contaminated subsurface environment that had undergone two seasons of acetate addition to stimulate microbial U(VI) reduction was examined. There were distinct horizontal and vertical geochemical gradients that could be attributed in large part to the manner in which acetate was distributed in the aquifer, with more reduction of Fe(III) and sulfate occurring at greater depths and closer to the point of acetate injection. Clone libraries of 16S rRNA genes derived from sediments and groundwater indicated an enrichment of sulfate-reducing bacteria in the order Desulfobacterales in sediment and groundwater samples. These samples were collected nearest the injection gallery where microbially reducible Fe(III) oxides were highly depleted, groundwater sulfate concentrations were low, and increases in acid volatile sulfide were observed in the sediment. Further down-gradient, metal-reducing conditions were present as indicated by intermediate Fe(II)/Fe(total) ratios, lower acid volatile sulfide values, and increased abundance of 16S rRNA gene sequences belonging to the dissimilatory Fe(III)- and U(VI)-reducing family Geobacteraceae. Maximal Fe(III) and U(VI) reduction correlated with maximal recovery of Geobacteraceae 16S rRNA gene sequences in both groundwater and sediment; however, the sites at which these maxima occurred were spatially separated within the aquifer. The substantial microbial and geochemical heterogeneity at this site demonstrates that attempts should be made to deliver acetate in a more uniform manner and that closely spaced sampling intervals, horizontally and vertically, in both sediment and groundwater are necessary in order to obtain a more in-depth understanding of microbial processes and the relative contribution of attached and planktonic populations to in situ uranium bioremediation.

Microbiological Reduction of Sb(V) in Anoxic Freshwater Sediments

2013 ◽  
Vol 48 (1) ◽  
pp. 218-226 ◽  
Author(s):  
Thomas R. Kulp ◽  
Laurence G. Miller ◽  
Franco Braiotta ◽  
Samuel M. Webb ◽  
Benjamin D. Kocar ◽  
...  
Keyword(s):  
Freshwater Sediments ◽  
Microbiological Reduction
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