Distribution of metals in coastal sediment from northwest sabah, Malaysia

Ling, S Y; Asis, Junaidi; Musta, Baba

doi:10.1016/j.heliyon.2023.e13271

Cited by 2 publications

(1 citation statement)

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“…According to [67], high contents of Cr, Fe, Cu, Zn, and Pb in marine bottom sediments are the result of inputs with non-silicate iron (hydro)oxide minerals and carbonate mineral phases, and phase redistribution can occur in the zones mixing fresh-and seawater in the estuarine zone. The predominant contribution of iron-manganese minerals to the migration of heavy metals to marine environments is mentioned [68]. Soil salinization also affects the migratory capacity of heavy metals by changing the ionic strength of the soil solution, pH, and redox potential, which determines the state of iron-manganese minerals [69].…”

Section: Medium-and Low-concentration Elementsmentioning

confidence: 99%

Element Composition of Fractionated Water-Extractable Soil Colloidal Particles Separated by Track-Etched Membranes

Volkov,

Rogova,

Ovseenko

et al. 2023

Agrochemicals

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Membrane fractionation with track-etched membranes was used to size-profile the microelement composition of water-extractable soil colloids (WESCs). The aim of the study is the element composition of narrow WESC fractions of typical chernozems in the range of 0.01–10 µm. Micro-/ultrafiltration through a cascade of track-etched polycarbonate membrane filters with pore sizes of 5, 2, 1, 0.8, 0.4, 0.2, 0.1, 0.05, 0.03, and 0.01 µm at room temperature was used. ICP–AES using direct spraying of obtained fractions without decomposition was used; Al, Ba, Cd, Cr, Cu, Fe, Mn, Si, Sr, Ti, Zn, Ca, K, Mg, Na, P, and S were found. Narrow WESC fractions differ significantly. For macro- and microelements, maximum amounts of Si, Al, Fe, and Ti and their maximum percentages are observed in fractions with sizes above 1 µm, while Ca, Mg, Mn, Cu, Zn, K, and S are accumulated more in fractions with sizes below 1 µm. The developed approach provides preparative isolation of a detailed set of narrow WESC fractions in the micrometer–nanometer range. This provides element soil profiles that reveal distinct differences and the individual character of each fraction as well as trends in changes in the mineral matrix and microelement composition with fraction size.

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Section: Medium-and Low-concentration Elementsmentioning

confidence: 99%