scholarly journals Immobilisation of As, Cd, Pb and Zn in agricultural soils by the use of organic and inorganic additives

2011 ◽  
Vol 48 (No. 8) ◽  
pp. 335-342 ◽  
Author(s):  
R. Vácha ◽  
E. Podlešáková ◽  
J. Němeček ◽  
O. Poláček
Keyword(s):  
Toxic Elements ◽  
Sequential Analysis ◽  
Agricultural Soils ◽  
Ph Value ◽  
Potentially Toxic Elements ◽  
Synthetic Zeolite ◽  
Organic Additives ◽  
Fodder Plants ◽  
Cubic Structure

The efficiency of the application of organic and inorganic additives on the reduction of mobility and transfer of As, Cd, Pb and Zn from the soil into the plants was observed. The dung, compost, acid peat and muck presented organic additives. Synthetic zeolite – type Pc of cubic structure, loamy shale and dolomite limestone presented inorganic additives. Five soil types were used during the testing (arenic regosol, typic cambisol, dystric cambisol, typic chernozem and typic fluvisol). The changeover of the mobility of As, Cd, Pb a Zn in the soil (the ratio of mobile and total contents, sequential analysis) and the transfer of the elements from the soil into the plants (the vegetables, cereals and fodder plants) were investigated. The results showed the primary importance of the soil pH value on the behaviour of potentially toxic elements and their intake by the plants. The efficiency of the use of organic additives strongly depended on the quality of the organic matter. Inorganic additives on the base of the sorbents worked in the case of mobile hazardous elements (Cd, Zn). The efficiency of the soil additives was strongly influenced by the soil type.

scholarly journals Use of dredged sediments on agricultural soils from viewpoint of potentially toxic substances

2011 ◽  
Vol 57 (No. 8) ◽  
pp. 388-395 ◽  
Author(s):  
R. Vácha ◽  
J. Čechmánková ◽  
J. Skála ◽  
J. Hofman ◽  
P. Čermák ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Toxic Elements ◽  
Agricultural Soils ◽  
Ph Value ◽  
Potentially Toxic Elements ◽  
Toxic Substances ◽  
Polycyclic Aromatic ◽  
Pond Sediments ◽  
The Village

A set of 29 pond sediments samples was collected. The sediments were separated into three groups, field, village, and forest pond sediments. The sediment samples were taken from pond bottoms and sediment heaps. The sediment characteristics (pH, CEC, Al-exchangeable, C<sub>ox</sub>, humus substances), the content of potentially toxic elements and persistent organic pollutants were analysed in the sediments and compared between sediment groups. The comparison of sediment contamination with Czech legislation for sediment use in agriculture was conducted. The village sediments were more loaded by potentially toxic elements and persistent organic pollutants than the others. The pH value of sediments was considered as the properties regulating the retention of potentially toxic elements and their mobility (Al, Cd, Zn). Polycyclic aromatic hydrocarbons (PAHs) were the most problematic POPs group in the sediments. The correlation showed poor dependency of POPs (especially PAHs) content on the content and quality of sediment organic matter.

Environmental Availability of Potentially Toxic Elements in an Agricultural Mediterranean Site

2019 ◽  
Vol 25 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Dimitrios Alexakis ◽  
Dimitra Gamvroula ◽  
Eleni Theofili
Keyword(s):  
Sequential Extraction ◽  
Toxic Elements ◽  
Soil Depth ◽  
Extraction Procedure ◽  
Potential Ecological Risk ◽  
Potentially Toxic Elements ◽  
Geochemical Partitioning ◽  
Exchangeable Fraction ◽  
High Bioavailability

ABSTRACT Total contents of 36 potentially toxic elements are summarized for agricultural topsoil (n = 12; soil depth = 0–20 cm), subsoil (n = 12; soil depth = 20–40 cm), and representative rock samples collected from a Mediterranean site (Megara Plain, Greece). The five-stage sequential extraction procedure for the geochemical partitioning of cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), manganese (Mn), and nickel (Ni), proposed by Tessier, was applied to topsoil and subsoil collected from the study area. Soil Cd was highly associated with exchangeable fraction, illustrating high bioavailability of this element. The order of mobility of the elements was as follows: Cd > Cu > Co > Zn > Ni > Cr > Mn. Results from sequential extraction experiments illustrated that the bioavailability of Cu, Co, and Zn is moderate, while Ni, Cr, and Mn presented low bioavailability, indicating that these elements could pose a limited threat to the quality of crops. Cadmium is the chief contamination controlling factor posing moderate potential ecological risk. The contamination sources of the examined elements are discussed.

Potentially toxic elements in agricultural soils from the Lombardia region of northern Italy

2018 ◽  
Vol 190 ◽  
pp. 436-452 ◽  
Author(s):  
Gian Maria Beone ◽  
Franca Carini ◽  
Laura Guidotti ◽  
Riccardo Rossi ◽  
Marina Gatti ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Agricultural Soils ◽  
Northern Italy ◽  
Potentially Toxic Elements

Microbial approach for alleviation of potentially toxic elements in agricultural soils

2020 ◽  
pp. 271-303
Author(s):  
Lander de Jesus Alves ◽  
Fábio Carvalho Nunes ◽  
Irailde da Silva Santos ◽  
Denise Morais Loureiro ◽  
Patricia Alves Casaes ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Agricultural Soils ◽  
Potentially Toxic Elements

Mobility of potentially toxic elements in family garden soils of the Riotinto mining area

2021 ◽  
Author(s):  
Antonio Romero-Baena ◽  
Cinta Barba-Brioso ◽  
Alicia Ross ◽  
Isabel González
Keyword(s):  
Organic Matter ◽  
Toxic Elements ◽  
Agricultural Soils ◽  
Clay Mineralogy ◽  
Mining Area ◽  
Potentially Toxic Elements ◽  
Water Soluble ◽  
Trophic Chain ◽  
Mining Areas ◽  
Total Concentrations

&lt;p&gt;Agricultural soils in mining areas usually accumulate potentially toxic elements (PTEs) that can become a health risk to humans by entering the trophic chain. In this study, five small agricultural plots close to Riotinto mines (SW Spain) were studied, with the aims of comparing the concentration of PTEs with respect to the regional (South Portuguese Zone) baseline and conducting availability studies in order to determine the contamination of soils. Chemical composition, total and clay mineralogy, and edaphic parameters were determined in topsoil and subsoil samples to characterize the soils, and single extractions were conducted to assess the mobility. The mineralogy of the soils was composed of quartz and phyllosilicates, with small amounts of feldspars and occasionally containing hematite and calcite. The texture ranged from sandy to silty loam, the pH was slightly acidic, and high contents of organic matter were found. Total concentrations of trace elements correlated with the texture, the content in iron oxy-hydroxides and the pH. The values of As, Pb, Cu, and Zn exceeded the regional baseline even in sites unaffected by mining. The results suggest that a widespread sampling is necessary to determine the local background. The most water-soluble element was As, due to the competition of organic matter for sorption sites. The content of Cu, Cr and Zn extracted with different methods were higher in sandy soils with low iron oxy-hydroxides content. Monoammonium phosphate and EDTA extractions seemed to remove elements from organic matter and iron oxy-hydroxides. The extracted fractions of As and metals reached up to 10-30 wt%.&amp;#160; Despite the high total concentrations of the element in soils, they generally showed low available proportions, especially with water and ammonium acetate extractants. The results suggest that the soils are not necessarily a risk to humans and higher investigation efforts are necessary to assess the availability of PTEs and their transfer to plants.&lt;/p&gt;

Fire effects on the distribution and bioavailability of potentially toxic elements (PTE) in agricultural soils

Chemosphere ◽  
2021 ◽  
pp. 130752
Author(s):  
Roberto Terzano ◽  
Ida Rascio ◽  
Ignazio Allegretta ◽  
Carlo Porfido ◽  
Matteo Spagnuolo ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Agricultural Soils ◽  
Fire Effects ◽  
Potentially Toxic Elements

scholarly journals Soft Computing Techniques for Appraisal of Potentially Toxic Elements from Jalandhar (Punjab), India

2021 ◽  
Vol 11 (18) ◽  
pp. 8362
Author(s):  
Vinod Kumar ◽  
Parveen Sihag ◽  
Ali Keshavarzi ◽  
Shevita Pandita ◽  
Andrés Rodríguez-Seijo
Keyword(s):  
Toxic Elements ◽  
Mean Squared Error ◽  
Agricultural Soils ◽  
Potentially Toxic Elements ◽  
Performance Estimation ◽  
Boosted Regression Trees ◽  
Squared Error ◽  
Soft Computing Techniques ◽  
Models Comparison ◽  
Better Than

The contamination of potentially toxic elements (PTEs) in agricultural soils is a serious concern around the globe, and modelling approaches is imperative in order to determine the possible hazards linked with PTEs. These techniques accurately assess the PTEs in soil, which play a pivotal role in eliminating the weaknesses in determining PTEs in soils. This paper aims to predict the concentration of Cu, Co and Pb using neural networks (NNs) based on multilayer perceptron (MLP) and boosted regression trees (BT). Statistical performance estimation factors were rummage-sale to measure the performance of developed models. Comparison of the coefficient of correlation and root mean squared error suggest that MLP-established models perform better than BT-based models for predicting the concentration of Cu and Pb, whereas BT models perform better than MLP established models at predicting the concentration of Co.

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