Circle the letter of the one best answer. 3 points each. Fluorescence calibration curves typically curve down to the right at high concentrations. Which of the following is NOT a possible reason for the curvature. The mathematical derivation that predicts a linear response breaks down at high concentrations.
Self quenching at high concentrations can cause the curvature.
Which of the following is NOT true about a standard additions experiment involving UV-Visible spectroscopy. You must have a standard solution of the analyte, whose concentration is known. The identity of the interference present in the sample does NOT need to be known. Absorbance caused by scattered light will NOT be corrected for by this method. Gravimetric analysis 5.