Acid-Volatile Sulfide (Avs) in a Seasonally Anoxic Mesotrophic Lake: Seasonal and Spatial Changes in Sediment Avs

Howard, Dorothy E.; Evans, R. Douglas

doi:10.1897/1552-8618(1993)12[1051:asaias]2.0.co;2

Cited by 19 publications

(29 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4A) and S (Fig. The relationship of AVS with depth was also found by Howard and Evans [12] in mesotrophic lakes of about 15-m depth. The relationship of AVS with depth was also found by Howard and Evans [12] in mesotrophic lakes of about 15-m depth.…”

Section: Spatial Analysissupporting

confidence: 72%

See 1 more Smart Citation

Spatial variation of metals and acid volatile sulfide in floodplain lake sediment

Griethuysen

Meijboom

Koelmans

2003

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

In risk assessment of aquatic sediments, much attention is paid to the immobilizing effect of acid volatile sulfide (AVS) on trace metals. The difference of AVS and simultaneously extracted metals (SEM) gives an indication of metal availability. In floodplain sediments, where changing redox conditions occur, AVS may play a major role in determining variation in metal availability. The importance of spatial heterogeneity has been recognized in risk assessment of trace-metal-polluted sediments. However, little is known about spatial variation of available metal fractions. We studied spatial variability of sediment, environmental conditions, total contaminant concentrations, and available metals (as SEM-AVS or SEM-AVS/f(oc)) in a floodplain lake. The top 5 cm of sediment was sampled at 43 locations. Data were analyzed with correlation and principal component analysis as well as with geostatistical methods. Trace metal and SEM concentrations and most sediment characteristics were more or less constant within 10%. In contrast, AVS concentrations were much more variable and showed a strong spatial dependence due to differences in lake depth, total sulfur pools, and redox potential (E(h)), which resulted in crucial differences in trace-metal availability within the lake. The spatial pattern of SEM-AVS deviates from total or normalized trace-metal patterns. This particularly has implications for risk assessment of sediments prone to dynamic hydrological conditions, where AVS concentrations are also variable in time.

show abstract

Section: Spatial Analysissupporting

confidence: 72%

“…When AVS concentrations are spatially variable under field conditions, availability of trace metals can thus be variable, e.g., within one lake. Howard and Evans [12] evaluated trends in AVS by means of observations along transects. Few studies, however, concerned variability of AVS among locations in the field.…”

Section: Introductionmentioning

confidence: 99%

Spatial variation of metals and acid volatile sulfide in floodplain lake sediment

Griethuysen

Meijboom

Koelmans

2003

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

show abstract

“…The formation and stability of sulfides in freshwater sediments are affected by many biotic and abiotic factors, including sulfate concentrations, loadings of labile organic matter, redox conditions, and temperature [11]. Interactions of these factors can produce substantial spatial and temporal variation in AVS concentrations in freshwater sediments [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of spatial and temporal variation of acid‐volatile sulfide on the bioavailability of copper and zinc in freshwater sediments

Besser¹,

Ingersoll²,

Giesty

1996

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Variation in concentrations of acid‐volatile sulfide (AVS) in sediments from the upper Clark Fork River of Montana, USA, was associated with differences in bioaccumulation of Cu and Zn and growth of larvae of the midge, Chironomus tentans. Growth of midge larvae was significantly greater and bioaccumulation of Cu was significantly less in surface sections (0–3 cm depth) of sediment cores, which had greater concentrations of AVS and lesser ratios of simultaneously extracted metals to AVS (SEM:AVS ratios) than in subsurface sediments (6–9 cm). Concentrations of AVS were significantly less in sediments incubated with oxic overlying water for 9 weeks than in the same sediments incubated under anoxic conditions. Bioaccumulation of Cu differed significantly between incubation treatments, corresponding to differences in concentrations of AVS and SEM:AVS ratios, although midge growth did not. Bioaccumulation of Zn did not differ significantly between depth strata of sediment cores or between incubation treatments. When results from the two sets of bioassays were combined, bioaccumulation of Cu and Zn, but not growth, was significantly correlated with SEM:AVS ratios and other estimates of bioavailable metal fractions in sediments. Growth of midge larvae was significantly correlated with bioaccumulation of Zn, but not Cu, suggesting that Zn was the greater contributor to the toxicity of these sediments. Assessments of the toxicity of metal‐contaminated freshwater sediments should consider the effects of spatial and temporal variation in AVS concentrations on metal bioavailability.

show abstract

“…These * The U.S. Government right to retain a non-exclusive, royaltyfree licence in and to any copyright is acknowledged. AVS concentrations surface sediments vary both spatially and temporally in response to differences in redox conditions, temperature, and inputs of organic matter, and seasonal changes in AVS as great as two orders of magnitude have been reported in freshwater sediments (Howard et al, 1993;Brumbaugh et al, 1994). If the molar ratio of SEM to AVS is less than 1.0, excess sulfide is available to bind free metal ions, and porewater in equilibrium with these insoluble sulfides would contain very low concentrations of toxic metals.…”

Section: Introductionmentioning

confidence: 99%

Influences on copper bioaccumulation, growth, and survival of the midge, Chironomus tentans, in metal-contaminated sediments

Besser¹,

Kubitz

Ingersoll³

et al. 1995

J Aquat Ecosyst Stress Recov

View full text Add to dashboard Cite

I n f l u e n c e s on c o p p e r b i o a c c u m u l a t i o n , g r o w t h , a n d survival o f the midge, Chironomus tentans, in m e t a l -c o n t a m i n a t e d s e d i m e n t s * AbstractSediment bioassays with larvae of the midge, Chironomus tentans, were used to evaluate influences on the bioavailability and toxicity of copper (Cu) in sediments with a wide range of concentrations of metals, acid-volatile sulfide (AVS), and other physicochemical characteristics. Sediments were collected from sixteen lakes in Michigan, USA, and from twelve sites in the Clark Fork River drainage of Montana, USA, which are contaminated with metals from mining activities and from other anthropogenic sources. Bioassays with C. tentans larvae were conducted for ten days in a static-renewal test system, with endpoints of survival, growth, and metal bioaccumulation. Bioaccumulation of copper (Cu) was strongly correlated with Cu concentrations in porewater, and was increased significantly at Cu concentrations less than those affecting growth or survival. Midge survival and growth were not significantly correlated with concentrations of Cu in sediment or porewater, and were poorly predicted by ratios of acid-extractable metals to AVS in sediments. Principal components analysis indicated that Cu concentrations in porewater and bioaccumulation of Cu by midge larvae were influenced by AVS, sediment organic carbon, and porewater pH, and that toxicity was associated with high concentrations of Cu, high concentrations of zinc (Zn) and ammonia. No toxicity was observed in several sediments which contained low concentrations of AVS and high concentrations of Cu and Zn. In sediments which contain little AVS, bioavailability of metals may be controlled by constituents other than sulfides, such as organic matter and metal hydrous oxides. These results indicate that assessments of toxicity in metal-contaminated sediments should evaluate the importance of metal-binding phases other than sulfides, and the possible contributions of ammonia or other toxicants to toxicity in sediment bioassays.

show abstract

Acid-Volatile Sulfide (Avs) in a Seasonally Anoxic Mesotrophic Lake: Seasonal and Spatial Changes in Sediment Avs

Cited by 19 publications

References 16 publications

Spatial variation of metals and acid volatile sulfide in floodplain lake sediment

Spatial variation of metals and acid volatile sulfide in floodplain lake sediment

Effects of spatial and temporal variation of acid‐volatile sulfide on the bioavailability of copper and zinc in freshwater sediments

Influences on copper bioaccumulation, growth, and survival of the midge, Chironomus tentans, in metal-contaminated sediments

Contact Info

Product

Resources

About