An Analyst Runs an Alkane Standard on a GC-MS Prior

question 14

Multiple Choice

An analyst runs an alkane standard on a GC-MS prior to running a sample from a case. The following data is obtained:
Retention time of the compound in the sample: 7.21 minutes
Retention time of the C7 test alkane: 6.42 minutes
Retention time of the C8 test alkane: 7.58 minutes
Calculate the retention index of the compound in the sample

• A) 821
• B) 768
• C) 792
• D) 702
• E) none of the above

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