Research Article

Spectroscopic Determination of Fluoride Using Eriochrome Black T (EBT) as a Spectrophotometric Reagent from Groundwater

Figure 2

Color intensifications upon fluoride level increments on the addition of different amounts of fluoride from 0.5 to 3.0 mg/L to 5.0 × 10–5 M metal-EBT 1 : 1 complex.