Revisiting methods for the determination of bioavailable metals in coastal sediments

Peña-Icart, Mirella; Mendiguchı́a, Carolina; Villanueva-Tagle, Margarita Edelia; Pomares-Alfonso, Mario Simeón; Moreno, Carlos

doi:10.1016/j.marpolbul.2014.10.034

Cited by 17 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One method largely used to estimate the degree of metal contamination of a specific area and the potential risks linked to the increase in metal concentrations is to study the bioavailability of the metals in the sedimentation area (Peña-Icart et al, 2014). Metals are considered bioavailable whenever they are dissolved in the water column or interstitial water, incorporated to sediments through weak chemical bonds (i.e.…”

Section: Introductionmentioning

confidence: 99%

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Pereira

Moreira

Oliveira

et al. 2015

Marine Pollution Bulletin

View full text Add to dashboard Cite

Surface sediments collected in the intertidal zone of Paraguaçu estuary in July, 2013, were analyzed for organic matter, nitrogen, phosphorus, grain size fractions and partial concentrations of 16 metals. The USEPA 3051A method and ICP-OES and CV-AAS techniques were chosen to metal analysis. Pollution indices (EF, Igeo and PIN) and a comparison with sediment quality guidelines (UET, ERL, ERM, TEL and PEL of NOAA) were conducted in order to evaluate the potential metal impacts over the area. Principal Component Analysis (PCA) and Pearson correlation results showed the importance of organic matter content and the fine-grained fraction of sediments on the control of the bioavailable metals distribution. The Paraguaçu estuary already has anthropogenic enrichment relative to the background level, especially for Mn, whose values exceeded almost 30 times the background at one site (Mn: 1197.30 mg kg(-1)). However, metal levels are still below the reference values with the exception of Hg at one site (Hg: 0.25 mg kg(-1), exceeded TEL and ERL).

show abstract

Section: Introductionmentioning

confidence: 99%

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Pereira

Moreira

Oliveira

et al. 2015

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…According to Morse [38], the extraction in HCl 1 mol L −1 comprises the reactive phase of the metals, that is, the potentially more bioavailable. Huerta-Diaz and Morse [23], Townsend et al [52], Hatje et al [20], Machado et al [31], Peña-Icart et al [42] and Monte et al [36] also mention that this extraction is widely used in the determination of the bioavailability of metals in sediments.…”

Section: Bioavailable Metalsmentioning

confidence: 99%

“…Besides the release in the dissolved form, a change in this partitioning can alter the bioavailability of metals [31]. It is considered as a bioavailable geochemical phase, a substance that is found in forms that are weakly bounded to the sediment, capable of being absorbed by aquatic organisms [31,36,42].…”

Section: Introductionmentioning

confidence: 99%

Increase in the bioavailability of trace metals after sediment resuspension

et al. 2019

View full text Add to dashboard Cite

This study evaluated the potential mobility of metallic contaminants (Cd, Cr, Cu, Ni, Pb and Zn) present in sediments at the mouth of São Francisco Channel (Sepetiba Bay, RJ), using resuspension tests. Fourteen surface sediment and superficial water samples were collected along a salinity gradient from the river mouth into the bay. The resuspension tests consisted in the mechanical agitation of humid sediment aliquots in local unfiltered water, in a ratio of 7.5 g:100 mL, during 1 h and 24 h. The determination of the metals in the bioavailable fraction was performed in ICP-OES, after extraction in 1 mol L −1 HCl. Significant differences were observed between the central and external sectors for Cd (p = 0.009), Cr (p = 0.017), Ni (p = 0.047) and Zn (p = 0.007) concentrations (Kruskal-Wallis). The water's temperature (p < 0.001), pH (p < 0.05) and dissolved oxygen (p < 0.001) decreased in both time intervals in comparison to the initial measures before resuspension. The concentrations of Zn in the sediment increased from 222 to 316.2 mg kg −1 after 24 h agitation (Kruskal-Wallis; p < 0.05) at the external sector, possibly because this region has stronger oxidizing conditions. In general, a significant increase in the metals' concentrations was observed after resuspension, especially for the samples from the central sector that showed more than 90% of increase in metals concentrations after 24 h of agitation. These increases could lead to higher ecological risks to the local biota, especially during dredging activities.

show abstract

“…Biological extractants such as digestive fluids of endobenthic invertebrates (polychaetes, sipunculans) and fish have been also used for the extraction of trace elements, polyaromatic hydrocarbons (PAHs), or PCBs (Mayer et al, 1996(Mayer et al, , 2001Weston and Maruya, 2002;Goto and Wallace, 2009;Baumann et al, 2012;Wang et al, 2012). Artificial gut fluids consisting of chemical extractants able to recreate conditions relatively similar to those encountered in guts of invertebrates or fish were also used, such as acid solutions at physiological pH levels for metal extraction (Amiard et al, 1995Ettajani et al, 1996;Peña-Icart et al, 2014) or sodium dodecyl sulfate for PAHs (Ahrens et al, 2005).…”

Section: Bioavailability From Sedimentmentioning

confidence: 99%

From Incorporation to Toxicity

Amiard‐Triquet¹

2015

Aquatic Ecotoxicology

View full text Add to dashboard Cite

Revisiting methods for the determination of bioavailable metals in coastal sediments

Cited by 17 publications

References 52 publications

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Increase in the bioavailability of trace metals after sediment resuspension

From Incorporation to Toxicity

Contact Info

Product

Resources

About