Heavy metal mobility in intertidal sediments of the Scheldt estuary: Field monitoring

Accumulation and fractionation of trace metals in a Tunisian calcareous soil amended with farmyard manure and municipal solid waste compost

“…Cu has a very high affinity to organic compounds, as also previously reported [49,51] [53], the concentration of Cu in the oxidisable fraction increased from 15% in a control soil to 21 53% after long-term application of sewage sludge to a sandy loamy soil. 22…”

Relationships between Carapace Sizes and Plasma Major and Trace Element Status in Captive Hawksbill Sea Turtles (<i>Eretmochelys imbricata</i>)

“…blood sampling is an excellent, relatively noninvasive method to establish reliable baseline values of element levels in healthy sea turtles [7,11,14]. Van de Merwe et al [21] used blood samples to estimate the liver, kidney and muscle accumulation of elements in green sea turtles at found strong correlations between blood and tissue concentrations of As, cd, co, Hg and Se.…”

“…Van de Merwe et al [21] used blood samples to estimate the liver, kidney and muscle accumulation of elements in green sea turtles at found strong correlations between blood and tissue concentrations of As, cd, co, Hg and Se. Element levels found in blood samples can be used to study the processes of absorption, accumulation and circulation of metals and metalloids in blood and to correlate them to their bioavailability and potential toxicity [11]. It is necessary to evaluate physiological changes associated with aging before reaching conclusions about the accumulation of elements in the blood with time.…”

Presence and mobility of arsenic in estuarine wetland soils of the Scheldt estuary (Belgium)

“…Results of these analyses were reported by Du Laing et al 27 To detect significant effects of sampling depth, water table level, soil origin and possible interactions among these factors on the As concentrations in the pore water, analysis of variance (ANOVA) was conducted using SPSS 15.0. Tukey post-hoc tests were conducted to detect differences between means at the 0.05 significance level.…”

“…The IC concentrations indeed fluctuated between 5 and 600 mg L À1 . 27 The peak molar IC amount in the pore water thus constitutes a 3000-fold of the peak molar arsenic amount, so it seems evident that the sorption of arsenic oxyanions to the solid soil fraction is affected by HCO 3 À . Appelo et al 42 and Anawar et al 43 indeed suggested displacement by HCO 3 À to be a main As mobilization mechanism, which has however been disputed by Radu et al 20 based on column experiments with synthetic iron oxide-coated sand.…”