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Abstract: High fluoride contents in ground water are very big problem in the dry zone of Sri Lanka. Fluoride and some other parameters determined in the ground water sample. Study has been made of groundwater of 72 wells at five villages of the Vavuniya district in Northern Province, Sri Lanka, with special focus on fluorine contamination. Study area 90 people were examined and 23 of them were identified to be affected by dental fluorosis. The samples were collected on during the period of February and March. Fluoride concentration was determined using UV visible spectrophotometer and Field measurements of temperature, pH, and electrical conductivity were made during sampling. Fluoride concentrations in the study area vary from 0.14 to 1.52 mg/L, water table range from 3.9m to7.3m respectively. Electrical conductivity range from 120μs/cm to 1952μs/cm. out of the 72 wells only six wells were observed with higher F concentration than the WHO standard maximum (1.5mg/L) level. However, F concentration of 32wells higher than the desirable (0.6mg/L) level of WHO. Elevated fluoride concentrations in shallow groundwater in intensive agricultural areas appear to be related to the leaching of fluoride from soils due to successive irrigation and flooding time.DENTAL FLUOROSIS: A CASE STUDY IN VAUVNIYA DISTRICT, DRY ZONE OF SRI LANKA

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A little update on what i've been up to. Stop by http://markkent.me and contact me for public speaking events, features and for information on my book Wow Moments.MARK KENT

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