(b) Detection limits

		Unitsa	FA/B	AA	PA	BA	IA	VA
HPLC	Gasb	pg	21.0 (FA)	37.7	69.8	77.6	123.9	82.2
		ppb	0.53 (FA)	0.65	0.92	0.82	1.10	0.73
	Liquidc	pg	27.6 (FA)	36.0	45.5	57.2	70.2	71.6
		ppb	0.70 (FA)	0.63	0.60	0.61	0.62	0.64
		pMol	0.92 (FA)	0.82	0.78	0.79	0.83	0.82
GC-MS	Gasd	ng	0.07 (B)	9.68	0.81	0.16	0.11	0.11
		ppb	0.02 (B)	5.37	0.34	0.05	0.03	0.03
	Liquide	ng	0.07 (B)	2.97	1.50	0.18	0.12	0.12
		ppb	0.02 (B)	1.65	0.63	0.06	0.03	0.03

^aTo calculate concentration in ppb, the total sample volumes are assumed as 8 (HPLC) and 1 L (GC-MS); ^bloading volume = 8 L (8 min at a flow rate = 1 L min⁻¹) of 2.7 (VA) to 26 ppb standard (FA); ^cinjection amount = 0.5 ng (20 μL of 0.025 ng μL⁻¹); ^dloading volume = 50 mL (1 min at flow rate = 50 mL min⁻¹) of 0.76 (VA) to 4.98 ppb standard (AA); and ^e1 μL injection of 0.29 (IA) to 0.87 ng μL⁻¹ (AA) liquid standard.