Samples X and Y were analysed for Na by flame emission photometry. A series of standard solutions of Na were prepared and Li was added to each standard, as well as to the unknown samples to give a concentration of 5 ppm Li. The following intensities were measured: Determine the Na concentrations in ppm in X and Y samples.  Volume (10 ml) of Solution Ratio of Intensities (INa / ILi) - Water (Solvent Blank) - 5 ppm of Na - 10 ppm - 15 ppm - 20 ppm - X  - Y - 0.047 - 0.214 - 0.382 - 0.553 - 0.719 - 0.476 - 0.110

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Samples X and Y were analysed for Na by flame emission photometry. A series

of standard solutions of Na were prepared and Li was added to each standard,

as well as to the unknown samples to give a concentration of 5 ppm Li. The

following intensities were measured: Determine the Na concentrations in ppm

in X and Y samples. 

Volume (10 ml) of Solution

Ratio of Intensities (INa / ILi)

- Water (Solvent Blank)

- 5 ppm of Na

- 10 ppm

- 15 ppm

- 20 ppm

- X

 - Y

- 0.047

- 0.214

- 0.382

- 0.553

- 0.719

- 0.476

- 0.110

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