E-ISSN 2756-4843 | ISSN 0794-5698
 

Original Research 


Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria

Jude E Emurotu.

Abstract
The contamination of agricultural soils with heavy metals is of concern because if soil is contaminated, the metals can be transferred to food crops. The availability of these metals to food crops depends on the forms in which they are present in the soils. In this study sequential extraction technique was applied to assess the exchangeable, carbonate- bound, Fe-Mn oxide bound, organic bound and residual fractions in topsoil of farmlands in Kogi State, North Central Nigeria. Proportions in non-residual soil phases were 82.6 % Cd, 48.6 % Co, 72.5 % Cu, 73.2 % Ni, 41.9 % Pb, and 84.3 % Zn. Lead (Pb) and cobalt (Co) showed the highest phase of 58.1% and 51.4 % respectively in the residual phase. The low concentration of lead in the non-residual fraction (41.9 %) and the highly mobile exchangeable phase and pH sensitive carbonate phase is an indication that there is no increase in anthropogenic input of Pb into the environment. Cadmium, zinc and nickel are mostly abundant in exchangeable fraction and this can be of concern especially cadmium.

Key words: Heavy metals, metal speciation, farmlands, food crops, metal uptake


 
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Pubmed Style

Emurotu JE, . Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nig. J. Basic Appl. Sci.. 2020; 28(1): 48-55. doi:10.4314/njbas.v28i1.7


Web Style

Emurotu JE, . Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . http://www.njbas-udus.com/?mno=12781 [Access: March 26, 2021]. doi:10.4314/njbas.v28i1.7


AMA (American Medical Association) Style

Emurotu JE, . Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nig. J. Basic Appl. Sci.. 2020; 28(1): 48-55. doi:10.4314/njbas.v28i1.7



Vancouver/ICMJE Style

Emurotu JE, . Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nig. J. Basic Appl. Sci.. (2020), [cited March 26, 2021]; 28(1): 48-55. doi:10.4314/njbas.v28i1.7



Harvard Style

Emurotu, J. E. & (2020) Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nig. J. Basic Appl. Sci., 28 (1), 48-55. doi:10.4314/njbas.v28i1.7



Turabian Style

Emurotu, Jude E, and . 2020. Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nigerian Journal of Basic and Applied Sciences, 28 (1), 48-55. doi:10.4314/njbas.v28i1.7



Chicago Style

Emurotu, Jude E, and . "Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria ." Nigerian Journal of Basic and Applied Sciences 28 (2020), 48-55. doi:10.4314/njbas.v28i1.7



MLA (The Modern Language Association) Style

Emurotu, Jude E, and . "Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria ." Nigerian Journal of Basic and Applied Sciences 28.1 (2020), 48-55. Print. doi:10.4314/njbas.v28i1.7



APA (American Psychological Association) Style

Emurotu, J. E. & (2020) Chemical speciation and potential mobility of some metals of selected farmland in Kogi State, North Central Nigeria . Nigerian Journal of Basic and Applied Sciences, 28 (1), 48-55. doi:10.4314/njbas.v28i1.7





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