Methods. The method was developed by optimizing the operating parameters that affect the HS-SPME-GC process during adsorption and desorption. Five operating parameters were evaluated in the following order: desorption time, depth of the fiber in the GC injection port during desorption, adsorption time, adsorption temperature and sample volume. During optimization, one parameter was varied at a time while keeping the other parameters constant. Once a parameter was optimized, its optimized condition was used in the evaluation of the remaining parameters and during method validation. Method validation includes studies on linearity, accuracy, precision, detection limits, recovery, interference and stability.Before use the fiber was conditioned by heating at 300 oC in the GC injector for 2 hours. Clear 10 mL headspace ... The chromatographic analysis was performed using a HP 6890 gas chromatograph (Agilent Technologies) equipped with aanbsp;...
|Title||:||Determination of Volatile Organic Compounds in Biological Fluids and Tissues Using Solid Phase Microextraction and Gas Chromatography: Styrene and Toluene|
|Publisher||:||ProQuest - 2007|