1. D.C. Adriano, Biogeochemistry of Trace Metals: Advances in Trace Substances Research, Boca Raton, 2017,
    p. 528. Available at:
  2. R. Chowdhury, A. Ramond, L.M. O’Keeffe, S. Shahzad, S.K. Kunutsor, T. Muka, J. Gregson, P. Willeit, S. Warnakula, H. Khan, S. Chowdhury, R. Gobin, O.H. Franco, E. Di Angelantonio, Environmental toxic metal contaminants and risk of cardiovascular disease: systematic review and meta-analysis, BMJ, 362 (2018) k3310, doi: 10.1136/bmj.k3310.
  3. EPA, 2012 Edition of the Drinking Water Standards and Health Advisories, Environmental Protection Agency, Washington, DC, EPA 822-S-12-001, 2012.
  4. WHO, Guidelines for Drinking-Water Quality, 4th ed., World Health Organization Chronicle, Switzerland, Brazil, 2011, pp. 104–108.
  5. P.A. Kobielska, A.J. Howarth, O.K. Farha, S. Nayak, Metal– organic frameworks for heavy metal removal from water, Coord. Chem. Rev., 358 (2018) 92–107.
  6. A. El-Hajoj, M.A. El-Khateeb, A. El-Bahrawy, Assessment of the quality of groundwater in Sakaka, Bioinfo. Environ. Pollut., 2 (2012) 12–15.
  7. N. Ammar, A. Fahmy, I.S. Kanawy, E.M.A. Hamzawy, M.A. El-Khateeb, Wollastonite ceramic/CuO
    nano-composite for cadmium ions removal from waste water, Egypt. J. Chem., 60 (2017) 817–823.
  8. M.S. Sankhla, R. Kumar, Contaminant of heavy metals in groundwater and its toxic effects on human health and environment, Int. J. Environ. Sci. Nat. Res., 18 (2019) 555996, doi: 10.19080/ IJESNR.2019.18.555996.
  9. H.I. Abdel-Shafy, M.A. El-Khateeb, Fate of heavy metals in selective vegetable plants irrigated with primary treated sewage water at slightly alkaline medium, Egypt. J. Chem., 62 (2019) 2303–2312.
  10. H.I. Abdel-Shafy, M.A. El-Khateeb, Heavy metals in citrus fruits as affected by primary treated sewage irrigation, Egypt. J. Chem., 64 (2021) 165–176.
  11. E. Vetrimurugan, K. Brindha, L. Elango, O.M. Ndwandwe, Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta, Appl. Water Sci., 7 (2017) 3267–3280.
  12. M. Wołowiec, M. Komorowska-Kaufman, A. Pruss, G. Rzepa, T. Bajda, Removal of heavy metals and metalloids from water using drinking water treatment residuals as adsorbents: a review, Minerals, 9 (2019) 487, doi:10.3390/min9080487.
  13. S. Tangjuank, N. Insuk, J. Tontrakoon, V. Udeye, Adsorption of lead(II) and cadmium(II) ions from aqueous solutions by adsorption on activated carbon prepared from cashew nut shells, World Acad. Sci. Eng. Technol., 52 (2009) 110–116.
  14. Q.-S. Liu, T. Zheng, P. Wang, J.-P. Jiang, N. Li, Adsorption isotherm, kinetic and mechanism studies of some substituted phenols on activated carbon fibers, Chem. Eng. J., 157 (2010) 348–356.
  15. N. Abeer, S.A. Khan, S. Muhammad, A. Rasool, I. Ahmad, Health risk assessment and provenance of arsenic and heavy metal in drinking water in Islamabad, Pakistan, Environ. Technol. Innovation, 20 (2020) 101171, doi:10.1016/j.eti.2020.101171.
  16. S. Jadoon, Z. Hilal, M. Ali, S. Muhammad, Potentially toxic elements in drinking water and associated health risk assessment in Abbottabad City, Northern Pakistan, Desal. Water Treat., 151 (2019) 392–402.
  17. S.A. Khan, N. Abeer, S.Z. Hussain, S. Muhammad, F. Jawad, T. Khan, Potentially toxic elements contamination in water and evaluation for risk assessment in the Rawalpindi, Pakistan, Desal. Water Treat., 159 (2019) 327–337.
  18. WHO, Guidelines for Drinking-Water Quality, World Health Organization, 4th ed., Geneva, Switzerland, 2016.
  19. P. Arena, The Second International Workshop on Guided Self-Organisation (GSO-2009), Max Planck Institute for Mathematics in the Sciences, Leipzig Univ. Germany, August 18–20, 2009.
  20. R.B. Baird, Standard Methods for the Examination of Water and Wastewater, 23rd ed., Water Environment Federation, American Public Health Association, American, 2017.
  21. C.Y. Yin, M.K. Aroua, W.M.A.W. Daud, Review of modifications of activated carbon for enhancing contaminant uptakes from aqueous solutions, Sep. Purif. Technol., 52 (2007) 403–415.
  22. J.C. Wang, P. Chen, L. Chen, K. Wang, H. Deng, F. Chen, Q. Zhang, Q. Fu, Preparation and properties of poly(vinylidene fluoride) nanocomposites blended with graphene oxide coated silica hybrids, eXPRESS Polym. Lett., 6 (2012) 299–307.
  23. M. Karnib, A. Kabbani, H. Holail, Z. Olama, Heavy metals removal using activated carbon, silica and silica activated carbon composite, Energy Procedia, 50 (2014) 113–120.
  24. Y.K. Siong, M.M. Atabaki, J. Idris, Performance of activated carbon in water filters, Water Resour., (2013) 1–19.
  25. K.B. Hatzell, M.C. Hatzell, K.M. Cook, M. Boota, G.M. Housel, A. McBride, E. Caglan Kumbur, Y. Gogotsi, Effect of oxidation of carbon material on suspension electrodes for flow electrode capacitive deionization, Environ. Sci. Technol., 49 (2015) 3040–3047.
  26. EPA, Basic Information About Lead in Drinking Water, Environmental Protection Agency, US EPA, 2016.
  27. J. Hu, Y. Ma, L. Zhang, F. Gan, Y.-S. Ho, A historical review and bibliometric analysis of research on lead in drinking water field from 1991 to 2007, Sci. Total Environ., 408 (2010) 1738–1744.
  28. WHO, Chromium in Drinking-Water, Background Document for Development of WHO Guidelines for Drinking-Water Quality, World Health Organization, Geneva, 2020.
  29. Z. Ideris, Study of the Quality of Commercial Bottled Mineral Waters in Malaysia, Jabatan Kimia, Fakulti Sains, Universiti Malaya, 2008.
  30. A.H. Dökmeci, A. Öngen, Ş. Dağdeviren, Environmental toxicity of cadmium and health effect, J. Environ. Prot. Ecol., 10 (2009) 84–93.
  31. R. Ullah, S. Muhammad, I.A.K. Jadoon, Potentially harmful elements contamination in water and sediment: evaluation for risk assessment and provenance in the northern Sulaiman fold belt, Baluchistan, Pakistan, Microchem. J., 147 (2019) 1155–1162.