Fractionation of potentially toxic elements (PTE) in soils irrigated with wastewater using modified BCR sequential extraction procedure

2017 ◽  
Vol 10 (1) ◽  
pp. 300
Author(s):  
B.S. Sagagi ◽  
T. S. Imam
Keyword(s):  
Sequential Extraction ◽  
Toxic Elements ◽  
Extraction Procedure ◽  
Potentially Toxic Elements ◽  
Sequential Extraction Procedure ◽  
Bcr Sequential Extraction

scholarly journals Fractionation of potentially toxic elements in urban soils from five European cities by means of a harmonised sequential extraction procedure

2006 ◽  
Vol 565 (1) ◽  
pp. 63-72 ◽  
Author(s):  
Christine M. Davidson ◽  
Graham J. Urquhart ◽  
Franco Ajmone-Marsan ◽  
Mattia Biasioli ◽  
Armando da Costa Duarte ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Urban Soils ◽  
Toxic Elements ◽  
Extraction Procedure ◽  
Potentially Toxic Elements ◽  
Sequential Extraction Procedure ◽  
European Cities

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.

scholarly journals Sequential Extraction Resulted in Similar Fractionation of Ionic Zn, Nano- and Microparticles of ZnO in Acidic and Alkaline Soil

Forests ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 1077
Author(s):  
Martin Šebesta ◽  
Martin Urík ◽  
Marek Kolenčík ◽  
Marek Bujdoš ◽  
Peter Matúš
Keyword(s):  
Sequential Extraction ◽  
Forest Soil ◽  
Plant Uptake ◽  
Agricultural Soil ◽  
Extraction Procedure ◽  
Sequential Extraction Procedure ◽  
Relative Distribution ◽  
Alkaline Soil ◽  
Bcr Sequential Extraction ◽  
The Difference

The evaluation of nanoparticle bioavailability or the bioavailability of dissolved elements by direct measurement through plant uptake is a strenuous process. Several multi-step sequential extraction procedures, including the BCR sequential extraction procedure, have been created to provide potential accessibility of elements, where real soil-plant transfer can be problematic to implement. However, these have limitations of their own based on the used extractants. For the purposes of our research, we enriched two soils: an untilted forest soil with naturally acidic pH and a tilted agricultural soil with alkaline pH by three Zn forms—ionic Zn in the form of ZnSO4, ZnO nanoparticles (ZnO NP) and larger particles of ZnO (ZnO B)—by batch sorption. We then extracted the retained Zn in the soils by BCR sequential extraction procedure to extract three fractions: ion exchangeable, reducible, and oxidizable. The results were compared among the soils and a comparison between the different forms was made. Regardless of the difference in soil pH and other soil properties, ZnO NP, ZnO B, and ionic Zn showed little to no difference in the relative distribution between the observed soil fractions in both forest soil and agricultural soil. Since ionic Zn is more available for plant uptake, BCR sequential extraction procedure may overestimate the easily available Zn when amendment with ionic Zn is compared to particulate Zn. The absence of a first extraction step with mild extractant, such as deionized water, oversimplifies the processes the particulate Zn undergoes in soils.

Use of the BCR sequential extraction procedure for the study of metal availability to plants

2010 ◽  
Vol 12 (2) ◽  
pp. 466-471 ◽  
Author(s):  
Junhui Li ◽  
Ying Lu ◽  
Hojae Shim ◽  
Xianglian Deng ◽  
Jin Lian ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Extraction Procedure ◽  
Sequential Extraction Procedure ◽  
Metal Availability ◽  
Bcr Sequential Extraction
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