Explain the concentration of f- in ppb in a water sample

Reference no: EM13333634

A standard addition procedure is used to determine the concentration of F- (in ppb) in a water sample. To four 6.00 mL aliquots of a water sample were added 0.00 mL, 1.50 mL, 2.50 mL, and 3.50 mL of a standard NaF solution containing 12.0 ppb F-. Exactly 6.00 mL of a solution containing an excess of Al-acid alizarin garnet R complex were added to each and the solution diluted to 50.00 mL. The relative fluorescence were measured giving the results: ml H2O mL of standard F- Relative fluorescence 6 0 65.5 6 1.50 42.6 6 2.50 27.3 6 3.50 11.8

Reference no: EM13333634

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