The meconium (first stool) of newborns in an inner-city hospital is sometimes screened for the presence of drugs of abuse.
A standard addition curve was obtained for the analysis of a cocaine metabolite in a miconium sample in which the final volume was altered by the addition of each spike.
In a plot of [S]iVs/Vi versus [1.031]x+s,fVf/Vi, the slope and y-intercept were 1.031 mV/mM and 0.06 mV, respectively.
Calculate the concentration of the cocaine metabolite in the sample (2 s.f.) in mM.