Sequential extraction study of complex Fe-Mn oxide coatings

2021 ◽  
pp. 703-706
Author(s):  
A. Gann
Keyword(s):  
Sequential Extraction ◽  
Oxide Coatings ◽  
Mn Oxide ◽  
Extraction Study

The determination of trace elements in Fe–Mn oxide coatings on pebbles using LA-ICP-MS

2006 ◽  
Vol 91 (1-3) ◽  
pp. 110-124 ◽  
Author(s):  
Sheldon R. Huelin ◽  
Henry P. Longerich ◽  
Derek H.C. Wilton ◽  
Brian J. Fryer
Keyword(s):  
Trace Elements ◽  
Oxide Coatings ◽  
Mn Oxide ◽  
Icp Ms

scholarly journals Assessment of trace and heavy metal distribution by four sequential extraction procedures in a contaminated soil

2013 ◽  
Vol 8 (No. 2) ◽  
pp. 71-76 ◽  
Author(s):  
Q. He ◽  
Y. Ren ◽  
I. Mohamed ◽  
M. Ali ◽  
W. Hassan ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Contaminated Soil ◽  
Mining Area ◽  
Metal Species ◽  
Residual Fraction ◽  
Experimental Conditions ◽  
Extraction Procedures ◽  
Mn Oxide ◽  
Sequential Extraction Procedures ◽  
Cu And Zn

Four sequential extraction procedures (Sposito, Tessier, Silveira and Bureau Communautaire de Reference (BCR)) were used to evaluate the distribution of some metals (Fe, Cu, Cd and Zn) in a contaminated soil around a mining area. The results showed that Fe and Zn were mainly recovered in the recalcitrant soil fractions, while Cd was primarily localized in the exchangeable fraction. Soil Cu was highly associated with organic matter fraction. The amorphous Fe fraction in Silveira could be recognized as part of the Fe-Mn oxide fraction in Tessier and BCR procedures, while the crystalline Fe oxide fraction was classified into the residual fraction in Sposito, BCR and Tessier schemes. Although the same reagent was used to extract target fraction, less carbonate-bound Cu, Cu and Zn were extracted in Tessier procedure as compared to Silveira method, while Tessier scheme yielded a higher proportion of Fe, Cu and Zn in the Fe-Mn oxide fraction than BCR method. Due to the lack of uniformity of experimental conditions and the differences in extraction reagents, the extraction efficiency of metal species varied with the sequential extraction schemes. Therefore, care should be taken when comparing the results obtained by different sequential extraction procedures.

scholarly journals of zinc fractions in relation to properties of some soils of Bangladesh

2016 ◽  
Vol 25 (1) ◽  
pp. 19-25
Author(s):  
Kalpana Begum ◽  
Md Faruque Hossain ◽  
Zakia Parveen
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
Sequential Extraction ◽  
Soil Characteristics ◽  
Soil Samples ◽  
Soil Series ◽  
Fe Oxide ◽  
Zinc Fractions ◽  
Mn Oxide ◽  
Land Types

An investigation was conducted to determine the distribution and concentrations of different forms of Zn in the soils of Gazipur. Gerua, Kalma and Khilgaon soil series were identified in three land types, named as highland, medium high land and medium low land, respectively. Soil samples were collected from each soil series at three different depth such as surface (0 -15 cm), subsurface (15 -40 cm) and substratum (40 cm+) to determine soil characteristics and the distribution pattern of Zn fractions. Results indicated that amount of total Zn varied significantly, ranges from 14.99 to 36.11 ?g/g at different depth of different land types. Moreover, the purpose of the sequential extraction or fractionation was to find out the Zn in the exchangeable (Exch.), organic matter (Org.) bound, Mn oxide (Mn-O), amorphous Fe oxide (Am. Fe-O), crystalline Fe oxide (Crys. Fe-O) and residual (Res.) fractions. In Gerua, Kalma and Khilgaon soils, Zn concentrations predominated in Res. followed by Crys. Fe-O and Am. Fe-O fractions. Results reflected that soil properties influence the distribution of different Zn fractions in soils.Dhaka Univ. J. Biol. Sci. 25(1): 19-25, 2016

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