Regional appraisal of the fluoride occurrence in groundwaters of Andhra Pradesh

Rao, P. N.; Rao, A. D.; Bhargav, J. S.; Sankar, K.; Sudarshan, G.

doi:10.1007/s12594-014-0154-7

Cited by 21 publications

(9 citation statements)

References 9 publications

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“…The F − content was from 0.26 to 2.30 (with an average of 0.99) mg/L in the present study area. The country rocks, containing the F − bearing minerals (apatite, biotite and hornblende), and the occurrence of clays are the main responsible for the F − content in the present study area, as also suggested by Rao et al (2014) and Subba Rao et al (2017b). The extensive use of phosphate fertilizers for higher crop yields is the secondary source for enrichment of F − in the groundwater (Subba Rao 2017b).…”

Section: Groundwater Quality and Chemistrysupporting

confidence: 54%

Quality and degree of pollution of groundwater, using PIG from a rural part of Telangana State, India

et al. 2018

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Impacts of geogenic and anthropogenic sources change seriously quality of groundwater. Inferior groundwater quality directly affects the human health, agricultural output and industrial sector. The aim of the present study is to evaluate the groundwater quality for drinking purpose and also to identify the pollutants responsible for variation of chemical quality of groundwater, using pollution index of groundwater (PIG). Groundwater samples collected from a rural part of Telangana State, India, were analyzed for pH, total dissolved solids (TDS), calcium (Ca 2+), magnesium (Mg 2+), sodium (Na +), potassium (K +), bicarbonate (HCO − 3), chloride (Cl −), sulfate (SO 2− 4), nitrate (NO − 3) and fluoride (F −). The groundwater is characterized by Na + and HCO − 3 ions. The values of TDS

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Section: Groundwater Quality and Chemistrysupporting

confidence: 54%

Quality and degree of pollution of groundwater, using PIG from a rural part of Telangana State, India

et al. 2018

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“…indicates its lower geochemical mobility and its absorption on clays (Hem 1991;Drever 1997). Fluoride minerals, agro-chemicals, etc., are the sources of F -in the groundwater (Ayoob and Gupta 2006;Ahmed 2014;Rao et al 2014).…”

Section: Resultsmentioning

confidence: 99%

Fluoride occurrence in the groundwater in a coastal region of Andhra Pradesh, India

Rao

Dinakar

et al. 2015

Appl Water Sci

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Fluoride (F -) content varies from 0.60 to 1.80 mg/L in the coastal region between Chirala and Ongole of Andhra Pradesh, India. It exceeds the threshold limit of 1.20 mg/L in 20 % of the total groundwater samples. The aim of the present study is to assess the controlling factors of F -content. The study area experiences a dry climate and is underlain by Charnockite Group of rocks over which the river and coastal alluvium occur. The

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“…indicates its lower geochemical mobility and its absorption on clays (Hem 1991;Drever 1997). Fluoride minerals, agro-chemicals, etc., are the sources of Fin the groundwater (Ayoob and Gupta 2006;Rao et al 2014).…”

Section: Resultsmentioning

confidence: 99%

Deleneation of groundwater quality in the presence of fluoride in selected villages of Simlapal block, Bankura district, West Bengal, India

Das

Dey

Mondal

2016

Sustain. Water Resour. Manag.

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Fluoride contamination and other physicochemical parameters in groundwater of Simlapal block of Bankura district were investigated. A total of 50 deep tube well (DTW) samples were collected from 18 villages of Simlapal. The higher concentration of iron values was recorded, 9.40 mg/L with an average value of 2.11 mg/L. Drastically, 58 % of water samples exceed the permissible limit of 1.5 mg/L (Guidelines for drinking water quality, World Health Organization, Geneva, 2004). Spatial distribution of F-(Guidelines for drinking water quality, World Health Organization, Geneva, 2004) concentration classes is represented by the simple Inverse Distance Weighting (IDW) interpolation method. The affinity between the pH and Fin groundwater suggests the dissolution of fluoridebearing minerals in groundwater. Furthermore, the pH has a good positive correlation with HCO 3-(r = 0.224). This indicates a prevailing condition of alkalinity (caused by HCO 3 only here) in the groundwater, which promotes a mineral dissolution. The Fshows a significant positive correlation with pH (r = 0.313, p \ 0.05) and HCO 3-(r = 0.224), while it has a negative correlation with Ca and Mg ions (r =-0.225 and-0.226). PCA accounts for 74.21 % of the variability for the first four components. F1 values have high loading (32.71 %), second component (F2) exhibits 19.98 %, third component (F3) shows 12.74 %, and fourth component (F4) shows only 8.72 % of the total variability to justify the significant correlation between chemical constituents. In terms of quality of water, sodium adsorption rate (SAR) showed that all the samples are from the group of excellent to good. With respect to permeability, sodium percentages show that 18 % are permissible but doubtful and 2 % are unsuitable for irrigation purposes.

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Regional appraisal of the fluoride occurrence in groundwaters of Andhra Pradesh

Cited by 21 publications

References 9 publications

Quality and degree of pollution of groundwater, using PIG from a rural part of Telangana State, India

Quality and degree of pollution of groundwater, using PIG from a rural part of Telangana State, India

Fluoride occurrence in the groundwater in a coastal region of Andhra Pradesh, India

Deleneation of groundwater quality in the presence of fluoride in selected villages of Simlapal block, Bankura district, West Bengal, India

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