Question

1. Given values of two peaks on a GC spectrum, how do you
calculate the % of each product?

2. Given a GC Spectrum, how do you identify the major and minor
products?

Answer 1

1. The percentage composition of each product can be found out by findin the area under each peak. The area is given as 1/2*h*w, where H is the height of the peak and w is the width. Let the areas of the two peaks be Area(a) and Area (b).

Percentage composition of A in the mixture= (Area(a)/(Area(a)+Area(b)))*100

Percentage composition of B in the mixture= (Area(b)/(Area(a)+Area(b)) )*100

2. If GC spectrum is given, find the areas of the peaks by

1/2 *h*w. The peak having the largest area is the major product. The others are minor products.