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TL;DR: Montmorillonite-supported nanoscale zero-valent iron (Mt-nZVI) has been synthesized to remove inorganic arsenic (As) from aqueous solutions.
293 citations
TL;DR: The low SO4(2-) and high DOC, PO4(3-) and HCO3(-) concentrations in groundwater signify ongoing microbial mediated redox processes favoring As mobilization in the aquifer.
71 citations
TL;DR: Groundwater As concentrations from India, Vietnam and Nepal show groundwater As concentrations that are often an order of magnitude lower at a given level of P-extractable As compared to Bangladesh, even if only the subset of particularly reducing intervals characterized by leachable Fe(II)/Fe >0.5 and dissolved Fe>0.2 mg/L are considered.
67 citations
TL;DR: In this paper, the authors assessed the co-occurrence of fluoride and arsenic in groundwater of Dharmanagar region (Tripura, India) and found that concentrations of both the toxicants exceeded the World Health Organization drinking water standards in 30% samples.
53 citations
TL;DR: There is a high possibility of bioaccumulation of fluoride from contaminated soil and water of the study area to cultivated crops and this will enhance the quantity of fluoride intake into human food chain in addition to drinking water pathway.
Abstract: To assess the status of severity of fluoride contamination in lateritic Bankura and Purulia districts of West Bengal, concentrations of fluoride in different water sources and agricultural field soils were investigated. The fluoride content (mg/l) was observed to differ with aquifer depths: 0.19–0.47 in dug wells, 0.01–0.17 in shallow tube wells, and 0.07–1.6 in deep tube wells. Fluoride within the World Health Organization (WHO) prescribed range (1.0–1.5 mg/l) was estimated only in ~17 % of the total collected water samples while ~67 % showed <0.7 mg/l fluoride and thus may impede in the production and maintenance of healthy teeth and bones of the residents, especially children. Fluoride in water was found to be significantly correlated (r = 0.63) with pH. The exposure dose of fluoride (mg/kg/day) from drinking water in infants, children, and adults was estimated in the ranges 0.02–0.53, 0.01–0.24, and 0.01–0.14, respectively against the standard value of 0.05. A clear risk of dental fluorosis is apparent in infants and children of the study area. The fluoride in soil (55–399 mg/kg) was detected to be significantly correlated with the fluoride content in deep tube wells and soil pH (r = 0.56 and 0.71, respectively). The relationships of soil fluoride with total hardness and that with phosphate were not significant. There is a high possibility of bioaccumulation of fluoride from contaminated soil and water of the study area to cultivated crops. This will enhance the quantity of fluoride intake into human food chain in addition to drinking water pathway.
50 citations
Authors
Showing all 15 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Sudipta Chakraborty | 14 | 26 | 1145 |
| Piyal Bhattacharya | 11 | 15 | 694 |
| Sudarshan Bardhan | 10 | 17 | 368 |
| Sitaram Pal | 3 | 8 | 16 |
| Sitaram Pal | 2 | 3 | 19 |
| Pradip Kumar Sur | 2 | 2 | 14 |
| P. K. Biswas | 1 | 1 | 10 |
| Shatarupa Chakraborty | 1 | 1 | 10 |
| Sarbani Dutta | 1 | 1 | 1 |
| Rituparna Paul | 1 | 1 | 10 |
| Biplab Kumar Mukhopadhyay | 1 | 1 | 10 |
| Anuradha Mandal | 1 | 1 | 10 |
| Saili Paul | 1 | 1 | 10 |
| Piyasi Bhattacharjee | 1 | 1 | 10 |
| Biswajit Kar | 0 | 1 | 0 |