School Of Environment And Earth Sciences

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Author: search.filters.author.Kumar, RavishankarSubject: search.filters.subject.heavy metals

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    Ground/drinking water contaminants and cancer incidence: A case study of rural areas of South West Punjab, India
    (Bellwether Publishing, Ltd., 2019-12-26T00:00:00) Kaur, Gursharan; Kumar, Ravishankar; Mittal, Sunil; Sahoo, Prafulla Kumar; Vaid, Upma
    This study was carried out in the rural areas of South West Punjab, India, to evaluate the groundwater quality and cancer incidence. The epidemiological study was carried using standardized questionnaire method, and the groundwater samples were analyzed for heavy metals by ICP-MS and AAS. The results showed that the cancer prevalence was highest in the age group of > 60, followed by >45�60 years old in both males and females. The average cancer rate in females (272 cases/lakh) was ?3 times higher than the India�s national cancer average of 80 cases/lakh. The mean concentration of As (27.59 �g/L), Pb (48.3 �g/L), U (96.56 �g/L), NO3� (67.32 mg/L), and F� (4.7 mg/L) exceeded the drinking water limits of WHO/BIS. Health risk analysis indicated that As, Pb, U, and F� with NO3� are the major groundwater contaminants, which may be one of the potential cause of cancer incidences. Multivariate analyses reveal that anthropogenic activities are source of NO3�, whereas U, As, and F� are mainly of geogenic origin. The carcinogenic and non-carcinogenic risk followed in the order of As > Pb and U > F�>NO3�>Cu > Zn, respectively. Further, correlations between cancer incidence and groundwater quality have been discussed. � 2019 Taylor & Francis Group, LLC.
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    Geochemical assessment of groundwater contaminants and associated health risks in the Shivalik region of Punjab, India
    (Taylor and Francis Ltd., 2020-08-07T00:00:00) Mittal, Sunil; Kumar, Ravishankar; Sahoo, Prafulla Kumar; Sahoo, Sunil Kumar
    The present study investigates the groundwater suitability for drinking and irrigation purposes in the Shivalik region of Punjab, India. The results revealed that the concentration of Se, U, and F? exceeded BIS acceptable drinking water standards in 18%, 9%, and 16% samples, respectively. Multivariate analyses indicate the geogenic origin for As, U, Fe, F? and SO42?, and anthropogenic for NO3?, Cu, and Cr. The carcinogenic risk of drinking water is in very low (10?6) to low (10?5) category, while cumulative non-carcinogenic risk (HI-1.2) is slightly higher than USEPA limits (HI-1). The groundwater quality was found suitable for irrigation purpose. � 2020 Informa UK Limited, trading as Taylor & Francis Group.