Influence of Salinity in the Bioavailability of Zn in Sediments of the Gulf of Cádiz (Spain)

Riba, Inmaculada; García-Luque, E.; Maz-Courrau, A.; Canales, María Luisa González de; DelValls, T.À.

doi:10.1007/s11270-010-0346-8

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Several studies relating the effects of salinity and pH on heavy metals mobility in estuarine and marsh sediments are reported [47][48][49]. A decrease in the salinity of dredged harbour sediments may lead to a different partitioning coefficients of (ratio between metal in sediment and the interstitial water, Kd) heavy metals but depends on several predominant processes such as mobilisation of metals through complexation with seawater anions (Cl-and SO 4 2 -) [46Changes in salinity play a major role in metal distribution in dredged harbour sediments, especially when washing procedure is applied as a remediation technique or when dredged harbour sediments are deposited in the open air.…”

Section: The Influence Of Salinity On Results Of Heavy Metal Mobility...mentioning

confidence: 99%

A Review of Sequential Extraction Procedures for Heavy Metals Speciation in Soil and Sediments

Okoro¹,

Fatoki²,

Adekola³

et al. 2012

J Environ Anal Toxicol

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Section: The Influence Of Salinity On Results Of Heavy Metal Mobility...mentioning

confidence: 99%

A Review of Sequential Extraction Procedures for Heavy Metals Speciation in Soil and Sediments

Okoro¹,

Fatoki²,

Adekola³

et al. 2012

J Environ Anal Toxicol

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“…In addition, according to Balls et al (1994) and Tam and Wong (1999), the higher concentrations of major cations in the A horizons could hinder the adsorption of metals onto the soil exchange sites. Nevertheless, our results are contrary to those of Riba et al (2010), who observed that Zn mobilisation in overlying water increased when salinity decreased.…”

Section: Metal Dynamics and The Effectiveness Of The Treatments With contrasting

confidence: 99%

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

González¹,

Nazaret²

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and water-soluble organic carbon in the soil solution were regularly monitored. Before and after the flooding period, a soil P-fractionation was performed.-In relation to N dynamics, the NO 3 concentrations in the soil solution decreased between 70 and 90% by the second day of flooding, except in the unvegetated pots with the soil of pH~6.2. Denitrification was the main mechanism associated to the removal of NO 3 -. The role of vegetation in improving the rhizospheric environment was relevant in the soil of pH~6.2 because higher sand content, lower pH, and higher soluble metal concentrations might strongly hinder microbial activity.-In relation to P dynamics, the PO 4 3concentrations in the soil solution decreased between 80 and 90% after three hours of flooding, with and without vegetation. The Fe/Mn/Al oxides and the Ca/Mg compounds played an important role in soil P retention. In the pots with S. fruticosa, the reductive conditions induced P release from metal oxides and P retention to Ca/Mg compounds. In turn, P. australis may have favoured the release of P from carbonates, which was transferred to Fe/Mn/Al compounds. In the second experiment, soils with fine texture from the Marina del Carmolí (in this case of pH~6.4) and sandy soils from the Lo Poyo salt marsh (in this case of pH~3.1) were used. Each type of polluted soil was mixed with a lime amendment (dose of 20 g kg -1 ), assaying two treatments: non-limed and limed soil. Cuttings of S. fruticosa were planted in pots prepared with the soil treatments. The pots were irrigated for 10 months with eutrophic water and soluble metal concentrations (Al, Cd, Mn, Pb, and Zn) and plant survival, plant biomass, and plant metal content were determined. The lime amendment decreased the concentrations of soluble metals and favoured the growth of S. fruticosa, enhancing the capacity of the plant to phytostabilise metals in roots. In the third experiment, soils with fine texture from the Marina del Carmolí (in this case of pH~6.4) and sandy soils from the Lo Poyo salt marsh (in this case of pH~3.1) were used. Each type of polluted soil was mixed with a lime amendment (dose of 20 g kg -1 ). Simulated soil profiles (60 cm depth) were constructed and four treatments were assayed: without liming + without plant, without liming + with plant, with liming + without plant, and with liming + with plant. The plant species employed was S. fruticosa. Three horizons were differentiated in the soil profiles: A (never under water), C1 (alternating flooding-drying conditions), and C2 (always under water). The pH, Eh, and soluble metal concentrations (Cd, Cu, Fe, Mn, Pb, and Zn) were measured regularly at each depth for 18 weeks. At the end of the experiment a soil metalfractionation was applied. The lime amendment favoured the growth of S. fruticosa, an increase in pH, and a drop in Eh. -In relation to Fe dynamics, liming decreased Fe solubility, mainly in the soil of pH~3.1, but also facilitated a drop in Eh, favouring the dissolution of amorphous Fe oxides and hence increasing the c...

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“…Thus, it is important to investigate soil contamination with heavy metals. Some researchers have reported the distribution and accumulation of heavy metals in water [8], sediment [9], plants and soil [10]; however, no studies of heavy metals contamination of paddy soils in the Daye mining area on a large-scale have been conducted to date.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Heavy Metal Contamination in Paddy Soils from Daye Mining Area of Hubei Province, China

Yin¹,

Sun²,

Zhao

2012

AMR

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The occurrence and distribution of heavy metals (including copper (Cu), lead (Pb), zinc (Zn), cadmium (Cd), chromium (Cr), cobalt (Co), nickel (Ni) and manganese (Mn)) in paddy soils from the Daye mining area were investigated by atomic absorption spectrophotometry (AAS) using the flame and graphite furnace method. The pollution of all metals investigated was found in paddy soil samples from the Daye mining area. Additionally, Cu, Pb, Zn and Cd concentrations at the sampling sites near the quarries and mines located in the central and eastern part of Daye were higher than those at the other sampling sites. Hierarchical cluster analysis and principal component analysis (PCA) of the heavy metal concentrations showed that the mine might be an important contributor to heavy metals contamination. PCA analysis extracted two factors that explained 67% of the total variables. The source of Zn, Cd, Cu and Pb would be primarily the deposition of aerosol particles emitted by metal smelting, manufacturing and traffic, acid mine drainage and metal mine waste rock and long-term stockpiling of tailings. Ni and Cr were controlled by parent material in the soils. Evaluation of heavy metals contamination of paddy soils indicated that the Cd contamination was the most widespread, followed Cu, Ni, Zn and Pb.

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Influence of Salinity in the Bioavailability of Zn in Sediments of the Gulf of Cádiz (Spain)

Cited by 8 publications

References 20 publications

A Review of Sequential Extraction Procedures for Heavy Metals Speciation in Soil and Sediments

A Review of Sequential Extraction Procedures for Heavy Metals Speciation in Soil and Sediments

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

Assessment of Heavy Metal Contamination in Paddy Soils from Daye Mining Area of Hubei Province, China

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