Question

When deciding about the range of standard curve, which of the following should be considered? A Sensitivity B. Upper/Lower Limit Time D Volume QUESTION 11 What does sensitivity of a spectrometer mean? A. The highest detectable level of the analyte distinguishable. B. The lowest detectable level of the analyte distinguishable from zero. C. The capacity to differentiate between two far apart concentrations of the analyte D. The capacity to differentiate between two very close concentrations of the analyte.

Answer 1

First question

Ans: Volume should be considered when deciding about the range of standard curve. Because analyte concentration can be determined accurately from the range of standard curve by its absorbance value. For that C=m/v , where as C= Concentration, m=mass and v=volume. From the above reasons volume should be considered.

Question 11

Ans: Sensitivity of a Spectrometer means the detection limit of a spectrometer which is the lowest detectable level of analyte distinguishable from zero. The quantification limit of an individual analytical procedure is the lowest amount of analyte in a sample which can be quantitatively determined with suitable precision and accuracy.