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Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria

Received: 18 February 2020    Accepted: 2 March 2020    Published: 31 December 2020
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Abstract

Quantification and risks of Cd, Cu, Pb, Zn, Ni, Fe, As and Cr were assayed in two vegetables (Lasianthera africana and Telfairia occidentalis) obtained from the sand mining environment of Ukat Nsit. Vegetable and soil samples were collected from four farms. Samples were also collected from a farm out of Ukat Nsit where there are no sand mining activities to serve as controls. The results revealed variable levels of the trace metals in the samples. In the soil, the metals levels ranged from 3.67 mg/kg Pb to 19.10 mg/kg Cu. In the vegetables, the trace metals levels ranged from 0.150 mg/kg Ni to 17.3 mg/kg Cu in L. africana and from 0.00 mg/kg Ni to 10.16 mg/kg Fe in T. occidentalis, respectively. Cd in the soil and vegetables exceeded the safe limits set by USEPA and WHO. The metal levels in the vegetables and soil from the control site were lower than those of the study area. This could be attributed to the negative impact of sand mining activities. Positive correlation at p < 0.01 was seen between Cd and Pb, Cd and Fe, Pb and Zn, As and Fe as well as Fe and Zn, indicating that Cr, Pb, Fe, Cu and Zn originated from the same anthropogenic sources. The target hazard quotient (THQ) for all the measured trace metals for the vegetables were lower than 1 (except Cd), indicating that the vegetables are relatively safe for consumption, except that their Cd levels could have adverse health effects.

Published in American Journal of Applied Chemistry (Volume 8, Issue 6)
DOI 10.11648/j.ajac.20200806.12
Page(s) 135-142
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Quantification, Risk Assessment, Trace Metals, Contamination, Vegetables, Sand Mining

References
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    Emmanuel Isaac Uwah, Helen Solomon Etuk, Eno-obong Augustine Udoh. (2020). Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria. American Journal of Applied Chemistry, 8(6), 135-142. https://doi.org/10.11648/j.ajac.20200806.12

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    ACS Style

    Emmanuel Isaac Uwah; Helen Solomon Etuk; Eno-obong Augustine Udoh. Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria. Am. J. Appl. Chem. 2020, 8(6), 135-142. doi: 10.11648/j.ajac.20200806.12

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    AMA Style

    Emmanuel Isaac Uwah, Helen Solomon Etuk, Eno-obong Augustine Udoh. Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria. Am J Appl Chem. 2020;8(6):135-142. doi: 10.11648/j.ajac.20200806.12

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  • @article{10.11648/j.ajac.20200806.12,
      author = {Emmanuel Isaac Uwah and Helen Solomon Etuk and Eno-obong Augustine Udoh},
      title = {Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria},
      journal = {American Journal of Applied Chemistry},
      volume = {8},
      number = {6},
      pages = {135-142},
      doi = {10.11648/j.ajac.20200806.12},
      url = {https://doi.org/10.11648/j.ajac.20200806.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20200806.12},
      abstract = {Quantification and risks of Cd, Cu, Pb, Zn, Ni, Fe, As and Cr were assayed in two vegetables (Lasianthera africana and Telfairia occidentalis) obtained from the sand mining environment of Ukat Nsit. Vegetable and soil samples were collected from four farms. Samples were also collected from a farm out of Ukat Nsit where there are no sand mining activities to serve as controls. The results revealed variable levels of the trace metals in the samples. In the soil, the metals levels ranged from 3.67 mg/kg Pb to 19.10 mg/kg Cu. In the vegetables, the trace metals levels ranged from 0.150 mg/kg Ni to 17.3 mg/kg Cu in L. africana and from 0.00 mg/kg Ni to 10.16 mg/kg Fe in T. occidentalis, respectively. Cd in the soil and vegetables exceeded the safe limits set by USEPA and WHO. The metal levels in the vegetables and soil from the control site were lower than those of the study area. This could be attributed to the negative impact of sand mining activities. Positive correlation at p < 0.01 was seen between Cd and Pb, Cd and Fe, Pb and Zn, As and Fe as well as Fe and Zn, indicating that Cr, Pb, Fe, Cu and Zn originated from the same anthropogenic sources. The target hazard quotient (THQ) for all the measured trace metals for the vegetables were lower than 1 (except Cd), indicating that the vegetables are relatively safe for consumption, except that their Cd levels could have adverse health effects.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Quantification and Risk Assessment of Some Trace Metals in Vegetables Obtained in Sand Mining Environment of Ukat Nsit, Nigeria
    AU  - Emmanuel Isaac Uwah
    AU  - Helen Solomon Etuk
    AU  - Eno-obong Augustine Udoh
    Y1  - 2020/12/31
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ajac.20200806.12
    DO  - 10.11648/j.ajac.20200806.12
    T2  - American Journal of Applied Chemistry
    JF  - American Journal of Applied Chemistry
    JO  - American Journal of Applied Chemistry
    SP  - 135
    EP  - 142
    PB  - Science Publishing Group
    SN  - 2330-8745
    UR  - https://doi.org/10.11648/j.ajac.20200806.12
    AB  - Quantification and risks of Cd, Cu, Pb, Zn, Ni, Fe, As and Cr were assayed in two vegetables (Lasianthera africana and Telfairia occidentalis) obtained from the sand mining environment of Ukat Nsit. Vegetable and soil samples were collected from four farms. Samples were also collected from a farm out of Ukat Nsit where there are no sand mining activities to serve as controls. The results revealed variable levels of the trace metals in the samples. In the soil, the metals levels ranged from 3.67 mg/kg Pb to 19.10 mg/kg Cu. In the vegetables, the trace metals levels ranged from 0.150 mg/kg Ni to 17.3 mg/kg Cu in L. africana and from 0.00 mg/kg Ni to 10.16 mg/kg Fe in T. occidentalis, respectively. Cd in the soil and vegetables exceeded the safe limits set by USEPA and WHO. The metal levels in the vegetables and soil from the control site were lower than those of the study area. This could be attributed to the negative impact of sand mining activities. Positive correlation at p < 0.01 was seen between Cd and Pb, Cd and Fe, Pb and Zn, As and Fe as well as Fe and Zn, indicating that Cr, Pb, Fe, Cu and Zn originated from the same anthropogenic sources. The target hazard quotient (THQ) for all the measured trace metals for the vegetables were lower than 1 (except Cd), indicating that the vegetables are relatively safe for consumption, except that their Cd levels could have adverse health effects.
    VL  - 8
    IS  - 6
    ER  - 

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Author Information
  • Department of Chemistry, University of Uyo, Uyo, Nigeria, International Centre for Energy and Environmental Sustainability Research (ICEESR), University of Uyo, Uyo, Nigeria

  • Department of Chemistry, University of Uyo, Uyo, Nigeria

  • Department of Chemistry, University of Uyo, Uyo, Nigeria

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