Fluoride Action Network


Fluorine is unique chemical element which occurs naturally, but is not an essential nutrient for
plants. Fluoride toxicity can arise due to excessive fluoride intake from a variety of natural or
manmade sources. Fluoride is phytotoxic to most plants. Plants which are sensitive for fluorine
exposure even low concentrations of fluorine can cause leave damage and a decline in
growth. All vegetation contains some fluoride absorbed from soil and water. The highest levels
of F in field-grown vegetables are found up to 40 mg kg-1 fresh weight although fluoride is
relatively immobile and is not easily leached in soil because most of the fluoride was not
readily soluble or exchangeable. Also, high concentrations of fluoride primarily associated with
the soil colloid or clay fraction can increase fluoride levels in soil solution, increasing uptake via
the plant root. In soils more than 90 percent of the natural fluoride ranging from 20 to 1,000 ?g
g-1 is insoluble, or tightly bound to soil particles. The excess accumulation of fluorides in
vegetation leads to visible leaf injury, damage to fruits, changes in the yield. The amount of
fluoride taken up by plants depending on the type of plant, the nature of the soil, and the
amount and form of fluoride in the soil should be controlled. Conclusively, fluoride is possible
and long-term pollution effects on plant growth through accumulation of the fluoride retained in
the soil.


Abugri DA, Pelig-Ba KB. 2010. Assessment of fluoride content in tropical surface soils used for crop cultivation. African Journal of Environmental Science and Technology 5:653-660.

Agarwal R, Chauhan SS. 2014. Bioaccumulation of sodium fluoride toxicity in Triticum aestivum Var. International Journal of Food, Agriculture and Veterinary Sciences 4:98-101.

Ando M, Tadano M, Asanuma S, Tamura K, Matsushima S, Watanabe T, Kondo T, Sakurai S, Ji R, Liang C, Cao S. 1998. Health effects of indoor fluoride pollution from coal burning in China. Environment Health Perspect 106:239-244.

Anshumali BK. 2014. Fluoride in agricultural soil: A review on its sources and toxicity to plants. Global sustainability transitions: Impacts and innovations 3:29-37.

Arnesen AKM. 1997. Availability of fluoride to plants grown in contaminated soils. Plant and Soil 191:13-25.
Atkins P, Jones L. 2007. Chemical Principles: The quest for insight (4th ed.). W. H. Freeman, New York.

‘Barrow NJ, Ellis AS. 1986. Testing a mechanistic model. III. The effects of pH on fluoride retention by a soil. Journal of Soil Science 37:287-293.

Begum A. 2012. Soil profiles and fluoride adsorption in intensely cultivated areas of Mysore district, Karnataka, India. Chemical Science Transaction 1:410-414.

Bower CA, Hatcher JT. 1967. Adsorption of fluoride by soils and minerals. Soil Science 103:151-154.

Brewer RF. 1966a. Fluorine. In Diagnostic criteria for plants and soil edited by Chapman HD. pp. 180-196. University of California, Los Angeles, USA.

Brewer RF. 1966b. Fluorine. In Methods of soil chemical analysis (Part 2) edited by Black CA. pp. 135-1148. American Society of Agronomy. Madison, WI, USA.

Bustingorri C, Balestrasse K, Lavado RS. 2015. Effects of high arsenic and fluoride soil concentrations on soybean plants. Phyton (B. Aires) [online] 84:407-416

Campbell IR. 1950. Publications concerning fluorine and its compounds in relation to man, animals, and their environment including effects on plants. Part I. Kettering Laboratory, Cincinnati University, USA.

Chang CW, Thompson CR. 1966. Effect of fluoride on nucleic acids and growth in germinating corn seedling roots. Physiology of Plant 19:911.

Chang CW. 1967. Study of phytase and fluoride effects in germinating corn seeds. Cereal Chemistry 144:129-142.

Daines RH, Leone I, Brennan E. 1952. The effect of fluorine on plants as determined by soil nutrition and fumigation studies. In Proc. U. S. Technical conference on air pollution. pp. 97-105. McGraw-Hill Book Co., New York.

Davison A. 1983. Uptake, transport and accumulation of soil and airborne fluorides by vegetation. In Fluorides: Effects on vegetation, animals and humans edited by Shupe J, Peterson H, Leone N. pp. 61-82. Paragon Press, Salt Lake City.

Edwards PN. 1994. Use of fluorine in chemotherapy. In Organofluorine chemistry: Principles and commercial applications edited by

Banks RE, Smart BE, Tatlow JC. pp. 501-542. Plenum Press, New York.

Elloumi N, Abdallah FB, Mezghani I, Rhouma A, Boukhris M. 2005. Effect of fluoride on almond seedlings in culture solution. Fluoride 38:193-198.

Elrashidi MA, Persaud N, Baligar VC. 1998. Effect of fluoride and phosphate on yield and mineral composition of barley grown on three soils. Communications in Soil Science and Plant Analysis 29:3-4.

Garrec JP, Letourneur L. 1981. Fluoride absorption by the root and foliar tissue of the horse bean (Vicia faha minor; calcicole) and lupine (Lupinus luteus; calcituge). Fluoride 14:30-38.

Garrec JP, Plebin R, Audin M. 1981. Effects of fluoride on the levels of sugars and acids amines of fir needles Abies alba. Mill. Environmental pollution series. A ecological and biological 26:281-295.

Gilpin L, Johnson AH. 1980. Fluorine in agriculture in soils of southeastern Pennsylvania. Soil Science Society of America Journal 44:255-258.

Greenfacts. 2002. Fluoride. Assessed in http://www.greenfacts.org/en/fluoride/.

Greenway H, Munns RA. 1980. Mechanism of salt tolerance in non halophytes. Annual Review of Plant Physiology 69:514.

Greenwood DA. 1956. Some effects of inorganic fluoride on plants, animals, and man. USU Faculty Honor Lectures. Assessed in http://digitalcommons.usu.edu/honor_lectures.

Greenwood NN, Earnshaw A. 1998. Chemistry of the elements (2nd ed.). Butterworth Heinemann, Oxford.

Griffin SW, Bayles BB. 1952. Some effects of flourine fumes on vegetation. pp. 106-115. Proceeding of U.S. Technical conference on air pollution.

Gupta S, Banerjee S, Mondal S. 2009. Phytotoxicity of fluoride in the germination of paddy (Oryza sativa) and its effect on the physiology and biochemistry of germinated seedlings. Fluoride 42:142.

Harbison GS. 2002. The electric dipole polarity of the ground and low-lying metastable excited states of NF. Journal of the American Chemical Society 124:366-367.

Holub Z, Navara J. 1966. The protecting effect and influence of calcium, magnesium and phosphorus on the uptake of fluoride by pea seeds. Biologia (Bratislava) 21:177-182.

Huang PM, Jackson ML. 1965. Mechanism of reaction of neutral fluoride solution with layer silicates and oxides of soils. Soil Science Society of America Journal 29:661-665.

IARC. 1982. Some aromatic amines, anthraquinones and nitroso compounds, and inorganic fluorides used in drinking-water and dental preparations. Lyon, international agency for research on cancer. IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans 27:237-303.

Imed M., Nada E., Ferjani BA, Mohamed C., Makki B. 2005. Fluoride accumulation by vegetation in the vicinity of a phosphate fertilizer plant in Tunisia. Fluoride 38:69-75.

Information and Science. 2013 . Fact about fluorine. Assessed in http://theinfoscience.blogspot.kr/2016/03/fact-about-fluorine.

IPCS. 1984. Fluorine and fluorides. Geneva, World health organization, International program on chemical safety (Environmental health criteria 36).

IPCS. 2002. Fluorides. Geneva, World health organization, International program on chemical safety (Environmental health criteria 227).

Istas JR, Alaerts G. 1974. The effects of fluorine and its compounds on plants. Revue de l’ Agriculture 27:487-496.

Jaccaud M, Faron R, Devilliers D, Romano R. 2000. Fluorine. In Ullmann, Franz. Ullmann’s encyclopedia of industrial chemistry 15. pp. 381-395. Wiley-VCH, Weinheim.

Jacobson JS, Weinstein LH, McCune DC, Hitchcock AE. 1966. The accumulation of fluoride by plants. Journal of Air Pollution Control Association 16:412-417.

Janssen PJCM, Janus JA, Knaap AGAC. 1988. Integrated criteria document fluorides-effects. Bilthoven, National Institute of Public Health and Environmental Protection (Appendix to Report No.75847005).

Jha SK, Nayak AK, Sharma YK. 2009. Fluoride toxicity effects in onion (Allium cepa L.) grown in contaminated soils. Chemosphere 76:353-356.

Jolly S, Oberoi D, Sharma R, Ralhan S. 1974. Fluoride balance studies in cases of endemic fluorosis. Proceeding of the Symposium on Fluorosis, Hyderabad, India.

Krupa S. 2001. Fluorine. In Encyclopedia of plant pathology edited by Maloy OC, Murray TD. p465. Wiley.

Kumar T, Dhakaand KT, Singharya SP. 2013. Effect of fluoride toxicity on biochemical parameters (chlorophyll, nitrogen, protein and phosphorus) of wheat (Triticum aestivum L.). International Journal of Forestry and Crop Improvement 4:80-83.

Landis WG, Sofield, RM. Yu M. 2011. Introduction to environmental toxicology, Molecular substructures to ecological landscapes, 4th edition. pp 255-268. CRC Press, Taylor & Francis Group.

Larsen S. Widdowson AE. 1971. Soil fluorine. Journal of Soil Science 22:210-222.

Lenntech. 2016. Chemical properties of fluorine – Health effects of fluorine – Environmental effects of fluorine. Assessed in http://www.lenntech.com/periodic/elements/f.htm# ixzz4MNvCkiJV.

Loganathan P, Hedley MJ, Grace ND, Lee J, Cronin SJ, Bola NS, Zanders JM. 2003. Fertilizer contaminants in New Zealand grazed pasture with special reference to cadmium and fluorine: A review. Australian Journal of Soil Research 41:501-532.

Macintire WH. 1950. In Air versus soil as channels for fluoric contamination of vegetation in two tennessee locates edited by McCabe LC. pp. 53-58. Proceedings of U.S. technical conference on air pollution, Interdepartmental committee on air pollution, Washington D.C.

Mackowiak CL, Grossl PR, Bugbee BG. 2003. Plant and environment interactions: Biogeochemistry of fluoride in a plant-solution system. Journal of Environmental Quality 32:2230-2237.

Macomber R. 1996. Organic chemistry. 1. Sausalito: University Science Books.

Marier, Rose. 1971. Fluoride Pollution. Assessed in http://fluoridealert.org/articles/groth-1975/

McLaughlin MJ, Stevens DP, Keerthisinghe DG, Cayley JWD, Ridley AM. 2001. Contamination of soil with fluoride by long term application of superphosphates to pastures and risk to grazing animals. Australian Journal of Soil Research 39:627-640.

Meeussen JCL, Scheidegger A, Hiemstra T, Van Riemsdijk WH, Borkovec M. 1996. Predicting multicomponent adsorption and transport of fluoride at variable pH in a goethite-silica sand system. Environmental Science Technology 30:481-488.

Mezghani IN, Elloumi FB, Abdallah MC, Boukhris M. 2005. Fluoride accumulation by vegetation in the vicinity of a phosphate fertilizer plant in Tunisia. Fluoride 38:69-75.

Miller GW. 1993. The effect of fluoride on higher plants with special emphasis on early physiological and biochemical disorders. Fluoride 26:3-22.

Miller VL. 1952. The effect of atmospheric fluoride on Washington agriculture. pp. 116-122. Proceeding of U.S. Technical conference on air pollution.

Mondal P, George S. 2015. Removal of fluoride from drinking water using novel adsorbent magnesia-hydroxyapatite. Water Air Soil Pollution 226:241.

Nakagawa M, Matsuya S, Shiraishi T, Ohta M. 1999. Effect of fluoride concentration and pH on corrosion behavior of titanium for dental use. Journal of Dental Research 78:1568-1572.

Omueti JAI, Jones RL. 1977. Fluoride adsorption by Illinois soils. Journal of Soil Science 28:564-572.

Panda D. 2015. Fluoride toxicity stress: physiological and biochemical consequences on plants. International Journal of Bioresearch and Environmental Agricultural Science 1:70-84.

Pant S, Pant P, Bhiravamurthy PV. 2008. Effects of fluoride on early root and shoot growth of typical crop plants of India. Fluoride 40:57-60.

Pauling L. 1960. The Nature of the Chemical Bond (3rd ed.). Ithaca: Cornell University Press.

Prystupa J. 2011. Fluorine-A current literature review. An NRC and ATSDR based review of safety standards for exposure to fluorine and fluorides. Toxicology Mechanisms and Methods 21:103-170.

Purohit SS, Sharma S. 1985. Fluoride effects on germination, growth and georeaction of Brassica campestris. Comparative Physiology & Ecology 10: 254-258.

Riedel S, Kaupp M. 2009. The highest oxidation states of the transition metal elements. Coordination Chemistry Reviews 253:606-624.

Sabal D, Khan TI. Saxena R. 2006. Effect of sodium fluoride on cluster bean (Cyamopsis tetragonoloba) seed germination and seedling growth. Fluoride 39:228-230.

Saini P, Khan S, Baunthiyal M, Sharma V. 2012. Organ-wise accumulation of fluoride in Prosopis juliflora and its potential for phytoremediation of fluoride contaminated soil. Chemosphere 89:633-635.

Saxena S, Rani A. 2012. Fluoride ion leaching kinetics for alkaline soils of Indian origin. Journal of Science Research Replica 1:29-40.

Shacklette HT, Boerngen JG, Keith JRX. 1974. Selenium, fluorine and arsenic in superficial materials of the conterminous United States. Washington, DC, US Department of the Interior (Geological Survey Circular 692).

Sheldrake R, George, ED, Leigh E, St. John Jr, Donald JL. 1978. Lime and charcoal amendments reduced fluoride absorption by plants cultured in perlite peat medium. Journal of American Society of Horticultural Science 103:268-270.

Singh A, Chhabra R, Aabrol IP. 1979. Effect of fluorine and phosphorus on the yield and chemical composition of rice (Oriza saliva) grown in soils of two sodicities. Soil Science 127:86-93.

Singh G, Kaur P, Sharma R. 1985. Effect of CCC and kinetin on certain biochemical parameters in wheat under different salinity levels. Plant Physiology and Biochemistry 12:104-111.

Slooff W, Eerens HC, Janus JA, Ros JPM, Janssen PJCM, Knaap AGAC, Lagas P, Matthijsen AJCM, Reijnders HFR, Struijs J, Wiel HJ, Anzion CJM, Eerden LJM, Duiser JA, Hollander JCT, Jong P. 1988. Basis document fluoride. Bilthoven, Netherlands, National Institute of Public Health and Environmental Protection (Report No. 758474005).

Stevens DP, McLaughlin MJ, Aston AM. 1997. Phytotoxicity of fluoride ion and its uptake from solution culture by Avena sativa and Lycopersicon esculentum. Plant and Soil 200: 119-129.

Symonds R, Rose W, Reed M. 1988. Contribution of Cl and F bearing gases to the atmosphere by volcanoes. Nature 334: 415-418.

Takmaz NS, Davison AW. 1988. Effects of aluminium on fluoride to fluorine concentration in solution culture. Agronomy Journal 80:173–177.

Theodoridis G. 2006. Fluorine-containing agrochemicals: An overview of recent developments. In Tressaud, Alain. Fluorine and the Environment: Agrochemicals, Archaeology, Green chemistry & Water. pp. 121-176. Elsevier, Amsterdam and Oxford.

Thomas MD. 1951. Gas damage to plants. Annual Review of Plant Physiology 2:293-322.

Thomas MD. 1955. Effect of ecological factors on photosynthesis. Annual Review of Plant Physiology 6:133-156.

Threshow M. 1970, Environment and plant response, Department of Biology, University of Utah.

Tracy PW, Robbins CW, Lewis GC. 1984. Fluorite precipitation in a calcareous soil irrigated with high fluoride water. Soil Science Society of America Journal 48:1013-1016.

Tylenda CA. 2011. Toxicological profile for fluorides, hydrogen fluoride and fluorine (F). pp 383. DIANE Publishing.

US DHHS. 2003. Toxicological profile for fluorides, hydrogen fluoride, and fluorine. Assessed in https://www.atsdr.cdc.gov/toxprofiles/tp11-c1.pdf.

US EPA. 1985. Drinking water criteria document on fluoride. Office of Drinking Water (TR-823-5), US Environmental Protection Agency, Washington DC.

US NAS. 1971. Fluorides, biological effects of atmospheric pollutants., US National Academy of Sciences. Washington DC.

Vasudevan D, Harrington LF, Cooper EM. 2003. Fluoride sorption and associated aluminum release in variable charge soils. Journal of Colloid and Interface Science 267:302-313.

Venkateswarlu P, Armstrong WD, Singer L. 1965. Absorption of fluoride and chloride by barley roots. Plant Physiology 40:620-624.

Wehr JB, Kopittke PM, Scholz L, Menzies NW. 2014. Understanding the movement of fluoride from soils into the broader ecosystem – Final Report St Lucia, QLD Australia: The University of Queensland, School of Agriculture and Food Sciences.

Wenzel WW, Blum WEH. 1992. Fluorine speciation and mobility in contaminated soils. Soil Science 153:357-364.

WHO. 2002. Fluorides. Geneva, Switzerland: World Health Organization. Environmental Health Criteria Number. 227. Accessed in http://www.inchem.org/pages/ehc.html.

Wiberg E, Wiberg N, Holleman AF. 2001. Inorganic chemistry. Academic Press, San Diego.

Wollaeger H. 2015. Fluoride toxicity in plants irrigated with city water. Assessed in http://msue.anr.msu. edu/news/fluoride_toxicity_in_plants_irrigated_with_city_water.

Yang SF, Miller GW. 1963. Biochemical studies on the effect of fluoride on higher plants. Metabolism of carbohydrates, organic acids and amino acids. Journal of Biochemistry 88:505-509.

Yu MH. 1996. Effects of fluoride on growth and soluble sugars in germinating mung bean (Vigna radiata) seeds. Fluoride 29:3-6.

Zimmerman PW. 1952. Effects on plants of impurities associated with air pollution. pp. 127-139. Proceeding of U.S. Technical conference on air pollution.