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A Review on the Status of Mercury Pollution in Pakistan: Sources and Impacts

  • Waqar Ali
  • Muhammad Junaid
  • Muhammad Wajahat Aslam
  • Kamran Ali
  • Atta Rasool
  • Hua ZhangEmail author
Mini-Review

Abstract

Mercury (Hg) contamination in environmental matrices and associated human exposure has been recognized as a critical long-lasting issue worldwide. However, studies are still elusive that summarized the overall status of Hg pollution and its impacts on public health in Pakistan. Hence, this review encompasses the environmental prevalence, potential sources, and human exposure tendencies to Hg contamination in Pakistan. Reviewed literature revealed jolting levels of Hg in various environmental samples, such as dust, soil, water, and air collected from the residential and industrial areas. Inhalation of Hg via dust particle was identified as the primary pathway for human exposure, while atmospheric deposition and gold mining are identified as the two primary sources of Hg contamination in the environment. Considering human exposure, the highest bioaccumulation of Hg was ranged from 5885 to 8698 µg/kg in hair samples collected from the residents of the Kashmir Valley, Pakistan. However, in the lower Himalayan regions, including Islamabad and Swabi, the concentration of Hg in hair samples was reported at 1085 µg/kg, slightly beyond WHO devised reference dose (RfD) of Hg (1000 µg/kg). This review revealed the worst scenario of Hg contamination in human biomatrices and environmental compartments in Pakistan, which needed immediate rehabilitation measures.

Notes

Acknowledgements

The current work is supported by the National Key R&D Program of China (No. 2017YFD0800302) and the Natural Science Foundation of China (4157312).

Compliance with Ethical Standards

Conflict of interest

Authors declared no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Waqar Ali
    • 1
    • 2
  • Muhammad Junaid
    • 3
  • Muhammad Wajahat Aslam
    • 1
    • 2
  • Kamran Ali
    • 4
  • Atta Rasool
    • 1
    • 2
  • Hua Zhang
    • 1
    Email author
  1. 1.State Key Laboratory of Environmental Geochemistry, Institute of GeochemistryChinese Academy of SciencesGuiyangChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and EnergyPeking University Shenzhen Graduate SchoolShenzhenChina
  4. 4.Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE)National University of Science and Technology (NUST) IslamabadIslamabadPakistan

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