WAYS OF EXPRESSING INHIBITION RATE 



539 



in fact, be demonstrated initially by the linearity of such a plot. Equation 

 12-1 mav be rewritten in terms of the inhibition as: 



i = if(l - e-°') 



(12-3) 



where ij is the final level of inhibition achieved. Since: 



log(/;- - = log if - ^^ t 



;i2-4) 



TIME 



Fig. 12-3. Logarithmic plot of the inhibition shown in Fig. 12-2 

 (Eq. 12-4). 



a plot of log(i^ — i) against t can also be used to determine a, but has no 

 advantage over the direct plotting of the rates. The initial rate of inhibi- 

 tion may be of significance experimentally when it is convenient to take 

 readings over a short period after the inhibitor is added and it is possible 



