Fluoride concentration in rocks and soil are well documented, but data on the F concentration in coal are limited. In present paper, fluoride were monitored in rain water during rainy season at 7 location of Singrauli region in 2004.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/fluoride-contamination-rain-water-singrauli-region
[2] http://admin.indiaenvironmentportal.org.in/category/author/sadhana-chaurasia
[3] http://admin.indiaenvironmentportal.org.in/category/author/sk-mishra
[4] http://admin.indiaenvironmentportal.org.in/category/journal/indian-journal-environmental-protection
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hindustan-aluminium-company-hindalco
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fluoride
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/thermal-power-plants
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india