Assessment of toxic metals in groundwater and saliva in an arsenic affected area of West Bengal, India

A pilot scale study

Subhamoy Bhowmick, Amit Kumar Kundu, Jishnu Adhikari, Debankur Chatterjee, Monica Iglesias, Jerome Nriagu, Debendra Nath Guha Mazumder, Basem Shomar, Debashis Chatterjee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Communities in many parts of the world are unintentionally exposed to arsenic (As) and other toxic metals through ingestion of local drinking water and foods. The concentrations of individual toxic metals often exceed their guidelines in drinking water but the health risks associated with such multiple-metal exposures have yet to receive much attention. This study examines the co-occurrence of toxic metals in groundwater samples collected from As-rich areas of Nadia district, West Bengal, India. Arsenic in groundwater (range: 12-1064μgL<sup>-1</sup>; mean ± S.D: 329±294μgL<sup>-1</sup>) was the most important contaminant with concentrations well above the WHO guideline of 10μgL<sup>-1</sup>. Another important toxic metal in the study area was manganese (Mn) with average concentration of 202±153μgL<sup>-1</sup>, range of 18-604μgL<sup>-1</sup>. The average concentrations (μgL<sup>-1</sup>) of other elements in groundwater were: Cr (5.6±5.9), Mo (3.5±2.1), Ni (8.3±8.7), Pb (2.9±1.3), Ba (119±43), Zn (56±40), Se (0.60±0.33), U (0.50±0.74). Saliva collected from the male participants of the area had mean concentrations of 6.3±7.0μg As L<sup>-1</sup> (0.70-29μgL<sup>-1</sup>), 5.4±5.5μg Mn L<sup>-1</sup> (0.69-22μgL<sup>-1</sup>), 2.6±3.1μg Ni L<sup>-1</sup> (0.15-13μgL<sup>-1</sup>), 0.78±1.0μg Cr L<sup>-1</sup> (<DL-5.9μgL<sup>-1</sup>), 0.94±0.90μg Pb L<sup>-1</sup> (<DL-4.2μgL<sup>-1</sup>), 0.56±0.37μg Se L<sup>-1</sup> (0.11-1.5μgL<sup>-1</sup>) and 194±54μg Zn L<sup>-1</sup> (112-369μgL<sup>-1</sup>). The high concentrations of salivary As and Mn are believed to be indicative of intake from the groundwater. The clustering of salivary As and Mn in principal component analysis further indicated influence of the common exposure source. Zinc and selenium comprised a separate component presumably reflecting the local deficiencies in intakes of these essential elements from drinking water and foodstuff. Thus the study reveals that the concentration of other metals beside As must be monitored in drinking water before implementation of any policies to provide safe water to the affected communities.

Original languageEnglish
Pages (from-to)328-336
Number of pages9
JournalEnvironmental Research
Volume142
DOIs
Publication statusPublished - 1 Oct 2015

Fingerprint

saliva
Poisons
Groundwater
Arsenic
Saliva
India
arsenic
Metals
Manganese
groundwater
Drinking Water
manganese
drinking water
Guidelines
Health risks
metal
Selenium
toxic metal
Principal Component Analysis
selenium

Keywords

  • Groundwater
  • Multi-metal exposure
  • Saliva
  • West Bengal

ASJC Scopus subject areas

  • Environmental Science(all)
  • Biochemistry

Cite this

Bhowmick, S., Kundu, A. K., Adhikari, J., Chatterjee, D., Iglesias, M., Nriagu, J., ... Chatterjee, D. (2015). Assessment of toxic metals in groundwater and saliva in an arsenic affected area of West Bengal, India: A pilot scale study. Environmental Research, 142, 328-336. https://doi.org/10.1016/j.envres.2015.07.005

Assessment of toxic metals in groundwater and saliva in an arsenic affected area of West Bengal, India : A pilot scale study. / Bhowmick, Subhamoy; Kundu, Amit Kumar; Adhikari, Jishnu; Chatterjee, Debankur; Iglesias, Monica; Nriagu, Jerome; Guha Mazumder, Debendra Nath; Shomar, Basem; Chatterjee, Debashis.

In: Environmental Research, Vol. 142, 01.10.2015, p. 328-336.

Research output: Contribution to journalArticle

Bhowmick, S, Kundu, AK, Adhikari, J, Chatterjee, D, Iglesias, M, Nriagu, J, Guha Mazumder, DN, Shomar, B & Chatterjee, D 2015, 'Assessment of toxic metals in groundwater and saliva in an arsenic affected area of West Bengal, India: A pilot scale study', Environmental Research, vol. 142, pp. 328-336. https://doi.org/10.1016/j.envres.2015.07.005
Bhowmick, Subhamoy ; Kundu, Amit Kumar ; Adhikari, Jishnu ; Chatterjee, Debankur ; Iglesias, Monica ; Nriagu, Jerome ; Guha Mazumder, Debendra Nath ; Shomar, Basem ; Chatterjee, Debashis. / Assessment of toxic metals in groundwater and saliva in an arsenic affected area of West Bengal, India : A pilot scale study. In: Environmental Research. 2015 ; Vol. 142. pp. 328-336.
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