A0.25g of quinine in antimalarial tablet was dissolved in sufficient 0.1 M HO to make 1%...

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A0.25g of quinine in antimalarial tablet was dissolved in sufficient 0.1 M HO to make 1% w/v solution. A 10-ml aliquot was then diluted to 250 ml with the acid. The fluorescence intersity for the diluted sample at 347.5 nm provided a reading of 140. A standard 120 ppm quinine solution registered 280 when measured under conditions identical to those for the diluted sample. The theoretical concentration of the final solution is ppm. A0.25g of quinine in antimalarial tablet was dissolved in sufficient 0.1 M HO to make 1% w/v solution. A 10-ml aliquot was then diluted to 250 ml with the acid. The fluorescence intersity for the diluted sample at 347.5 nm provided a reading of 140. A standard 120 ppm quinine solution registered 280 when measured under conditions identical to those for the diluted sample. The theoretical concentration of the final solution is ppm.