DENTAL FLUOROSIS: A CASE STUDY IN VAUVNIYA DISTRICT, DRY ZONE OF SRI LANKASivanesan Somanathar
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.
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.
DENTAL FLUOROSIS: A CASE STUDY IN VAUVNIYA DISTRICT, DRY ZONE OF SRI LANKASivanesan Somanathar
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.
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.
