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Human health risk assessment of heavy metal and pathogenic contamination in surface water of the Punnakayal estuary, South India.
Selvam, S; Jesuraja, K; Roy, Priyadarsi D; Venkatramanan, S; Khan, Ramsha; Shukla, Saurabh; Manimaran, D; Muthukumar, P.
  • Selvam S; Department of Geology, V.O. Chidambaram College, Thoothukudi, 628008. Tamilnadu, India. Electronic address: geoselvam10@gmail.com.
  • Jesuraja K; Department of Geology, V.O. Chidambaram College, Thoothukudi, 628008. Tamilnadu, India; Regsitration No: 18212232061030, Affiliated to Manonmaniam Sundaranar University, Tirunelveli, 627 012, Tamil Nadu, India.
  • Roy PD; Instituto de Geología, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Ciudad de México, CP 04510, Mexico.
  • Venkatramanan S; Department of Disaster Management, Alagappa University, Karaikudi, Tamil Nadu, India.
  • Khan R; Faculty of Civil Engineering, Institute of Technology, Shri Ramswaroop Memorial University, Barabanki, UP, 225003, India.
  • Shukla S; Faculty of Civil Engineering, Institute of Technology, Shri Ramswaroop Memorial University, Barabanki, UP, 225003, India.
  • Manimaran D; Department of Geology, V.O. Chidambaram College, Thoothukudi, 628008. Tamilnadu, India.
  • Muthukumar P; Department of Geology, V.O. Chidambaram College, Thoothukudi, 628008. Tamilnadu, India.
Chemosphere ; 298: 134027, 2022 Jul.
Article in English | MEDLINE | ID: covidwho-1838635
ABSTRACT
Variation in levels of toxic heavy metals in river system during the COVID-19 pandemic lockdown might potentially assist in development of a public health risk mitigation system associated with the water consumption. The water quality of Punnakayal estuary in the Thamirabarani River system from the south India, a vital source of water for drinking and domestic purposes, industrial usage, and irrigation was assessed here. A comparitive assessment of physico-chemical variables (pH, EC, TDS, DO, BOD, turbidity and NO3), microbiological parameters (total coliform bacteria, fecal coliform bacteria, fecal streptococci and escherichia coli) and toxic metals (As, Cr, Fe, Cu, Zn, Cd, and Pb) suggested a decrease of 20% in the contaminant ratio during the lockdown period in comparison to the pre-lockdown period. The Health risk assessment models (HQ, HI, and TCR) highlighted carcinogenic and non-carcinogenic hazards for both children and adults through the ingestion and dermal adsorption exposures. The HI values for both As and Cr exceeded the acceptable limit (>1) during the lockdown period, but the potential risk for children and adults remained low in compaisio with the pre-lockdown period. Our results suggested that the Thamirabarani River system remained hostile to human health even during the lockdown period, and it requires regular monitoring through a volunteer water quality committee with private and government participations.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Water Pollutants, Chemical / Metals, Heavy / COVID-19 Type of study: Observational study / Prognostic study Limits: Adult / Child / Humans Country/Region as subject: Asia Language: English Journal: Chemosphere Year: 2022 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Water Pollutants, Chemical / Metals, Heavy / COVID-19 Type of study: Observational study / Prognostic study Limits: Adult / Child / Humans Country/Region as subject: Asia Language: English Journal: Chemosphere Year: 2022 Document Type: Article