Vol 7, No 3 (2010) > Articles >

Analisis Kandungan Ion Flourida pada Sampel Air Tanah dan Air PAM Secara Spektrofotometri

Yodifta Astiningrum , Herman Suryadi , . Azizahwati

 

Abstract:

Fluoride ion is one of the compounds that are known to have benefits in the prevention
of dental caries when used in certain concentrations, but also hasnegative
effects that may cause the occurrence of dental and bone fluorosis when the intake
was in excessive concentration. One of the fluoride intakes comes fromwater that is
consumed. The aim of this research was to identify and measurefluoride ion levels in
groundwater and piped water that used as drinking water consumption in the
community. Measurement of fluoride ion concentration isdone by using visible spectrophotometry
at the maximum wavelength of 586 nmusing the sodium 2-parasulfophenylazo
1,8-dihydroxy-naphthalene-3,6disulfonate (SPADNS)-zirconil acid
reagent. This method was optimized by thesearch of range of absorption which stable
for 10 minutes after reagent addition.The limit of detection, limit of quantitation,
and coefficient of variation forfluoride ion were 0.0452 mg/L, 0.1506 mg/L, and
0,63%, respectively. While therecovery of fluoride ion in sample were in the range of
90,50-102,04%. The measurement results of the samples showed levels of fluoride
ions in groundwaterand piped water varied between 0.05 to 0.78 mg/L. This range
was still within allowed levels according the rules of Indonesian health ministers
No.492/MENKES/PER/IV/2010 where the maximum allowable fluoride concentration
is 1.5 mg/L.

Keyword : acid zirconyl-SPADNS, ground water, fluoride ion, pipedwater, spectrophotometry


Published at: Vol 7, No 3 (2010) pages: 46-57

DOI: 10.7454/psr.v7i3.3460


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