1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID. Calculate the recovery when the extract gives a peak area for trimethylbenzene of 750, while 20 ppm solution of trimethylbenzene gives a peak area of 50000.© BrainMass Inc. brainmass.com October 9, 2019, 11:18 pm ad1c9bdddf
The solution examines spike recovery of trimethylbenzene from soil and analysis of GC-FID. The recovery when the extract gives a peak area for trimethylbenzene of 750 is determined.