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The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm

Chemistry

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The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm. Using the data shown in the following table construct the standard calibration curve and determine the concentration of Fe in the waste stream. The cuvette or cell dimension is 1.00 cm.

ppm Fe Absorbance
0.0 0.000
1.0 0.183
2.0 0.364
3.0 0.546
4.0 0.727
5.0 0.269