TECHNIQUE: GAS CHROMATOGRAPHY, FID
ANALYTE: 1,3-butadiene
DESORPTION: 4 mL methylene chloride; 30 min
INJECTION: 1 µL
TEMPERATURE-INJECTION: 200 °C
-DETECTOR: 250 °C
-COLUMN: see APPENDIX A
CARRIER GAS: helium
MAKEUP GAS: nitrogen, 30 mL/min
COLUMNS: fused silica, 10 m x 0.50-mm ID 1.8-µm CP
WAX 57 CB (backflushable pre-column), and
50 m x 0.32-mm ID Al 2
O3
/KCl PLOT (see
APPENDIX A)
CALIBRATION: vapor-spiked sampling media
RANGE: 1 to 480 µg per sample
ESTIMATED LOD: 0.2 µg per sample
PRECISION (Sr
): 0.025