Nitrite is commonly determined by a colorimetric procedure using a reaction called the Griess reaction. In this reaction

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Nitrite Is Commonly Determined By A Colorimetric Procedure Using A Reaction Called The Griess Reaction In This Reaction 1 (27.32 KiB) Viewed 65 times

Nitrite is commonly determined by a colorimetric procedure using a reaction called the Griess reaction. In this reaction, the sample containing nitrite is reacted with sulfanilimide and N-(1-Napthyl) ethylenediamine to form a colored species that absorbs at 550 nm. Using an automated flow analysis instrument, the following results were obtained for standard solutions of nitrite and for a sample containing an unknown amount: Solution Absorbance at (a) Find the slope and intercept of the calibration curve. 1.00 UM 0.0651 (b) Construct the calibration curve in Excel and add it to your PDF 3.00 M 0.205 (no hand drawn plots!). 5.00 μM 0.338 7.00 UM 0.474 (c) Determine the concentration of nitrite in the sample. 9.00 M 0.598 Unknown 0.222 550 nm