Suppose you do a GC analysis on a sample consisting of 15% A, 60% B, and 25% C by weight. A and B are volatile and have different retention times but C is nonvolatile under the conditions used and therefore does not generate a peak on the chromatogram. Assuming that you do not know that there is nonvolatile material in the sample, what will you conclude from the GC analysis,ie.,what percent of A and B would you calculate?
2007-09-28 08:35:31 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
20% A, 80% B.
2007-09-28 08:38:43 · answer #1 · answered by Steve C 7 · 2⤊ 0⤋
The peaks would still come over in the same ratio of 15%/60%
but they would have to be normalized to make the result = to 100%
60 + 15 = 75 to make this go to 100 you'd multiple by approximately 100/75 = 1.333
so the peaks would come out as A = 60 * 1.333 â 80 %
and
B = 15 * 1.333 â 20 %
2007-09-28 08:45:23 · answer #2 · answered by Dr Dave P 7 · 1⤊ 0⤋