Simple analysis of naphthalene in human whole blood and urine by headspace capillary gas chromatography with large-volume injection
Abstract A very simple method for analysis of naphthalene in human whole blood and urine by headspace gas chromatography (GC) is presented.
It does not require solid-phase microextraction or cryogenic trapping devices, but needs only a conventional capillary GC
instrument with flame ionization detection. The advantage of the method is that as much as 5 ml of headspace vapor can be
injected into a GC instrument in splitless mode for sensitive detection. After heating a diluted whole blood or urine sample
containing naphthalene and 1-methylnaphthalene (internal standard, IS) in a 7.0-ml vial at 80°C for 30 min, 5 ml of the headspace
vapor was drawn with a glass syringe and injected into the gas chromatograph. Before injection, the column temperature was
set at 50°C to trap...
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