The speciation of cobalt and nickel at mine waste dump using improved correlation analysis: a case study of Sarcheshmeh copper mine

Yousefi, Saeed; Ardejani, Faramarz Doulati; Ziaii, Mansour; Karamoozian, Mohammad

doi:10.1007/s10668-014-9590-1

Cited by 6 publications

(1 citation statement)

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“…The obtained correlation coefficients revealed that carbonate bound Co was highly significantlyand positively correlated with total Co (r= 0.758**), soluble Co (r= 0.747**) and exchangeable Co (r=0.641**). Therefore, the bioavailability of cobalt directly depended on the stability of corresponding minerals (Yousefi et al, 2015).…”

Section: Relationships Among Forms Of Cobaltmentioning

confidence: 99%

Distribution and Forms of Cobalt and Its Relationship to Mineralogical Composition in Soils of the 10th of Ramadan City,Egypt

Bahnasawy¹,

Elwa²,

Sedky³

et al. 2019

Egypt.J. Soil Sci.

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T HE CURRENT study aimsatcomprehending the distribution of the different forms of cobalt and its relationship to the mineralogical composition of soils of the 10 th of Ramadan City, Egypt.Eight representative soil profiles were selected from the study area. Results showed that soil texture ranged from sand to sandy loam. Soil pH ranged from 6.98 to 8.68. EC values ranged from 8 to 8. 12 dSm-1 at 25°C whereas the predominant cations followed the descending order: Ca 2+ >Mg 2+ >Na + >K + , while the anions followed the sequence:SO 4 2->Cl->HCO 3-. The predominant clay minerals were kaolinite, montmorillonite and illite, accompanied with accessory minerals in the descending order; quartz>gypsum >dolomite >calcite>aragonite>hematite >muscovite>potassium feldspar. The total cobalt (Co)content ranged from 1.42 to 6.51 mgkg-1 and the DTPA-extractable Co content ranged from 0.65 to 1.75 mgkg-1. The successive extraction (fractionation of Co) exhibited that the residual form was the most dominant one where its percentage ranged from 34.01 to 82.90%. The soluble, exchangeable, carbonate bound, Fe-Mn bound andorganic boundforms ranged from: 1.38 to 4.23, 5.26 to 45.58, 1.79 to 7.34, 2.63 to 7.75, and 2.29 to 9.52%, respectively.Thus, it can be said that the following sequence characterized the distribution of Co forms among the different fractions:Residual >>exchangeable >organic-bound >Fe-Mn-bound > carbonate-bound >soluble. Accordingly,theobtained results evidently showed that there were relation between cobalt forms and mineralogical composition of soils.

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Section: Relationships Among Forms Of Cobaltmentioning

confidence: 99%