TABLE VI

Recovery of the Standard Compounds during Concentration Step

StandardsStarting concentration (ppm)Theoretical concentration in 10× samplesDetected concentration (ppm)Recovery (%)
2-Ethylhexanoic Acid5.0050.044.288.4
1,3-Di-tertbutylbenzene0.5005.005.10102
2,2,4,4,6,8,8 Heptamethylnonane (internal standard)0.5005.004.9899.5
2,4-Di-tertbutylphenol0.5005.005.46109
1-Tridecanol0.5005.005.30106
Lauryl acetate0.5005.005.43109
Lauryl acrylate0.5005.005.42108