Gas-Purged Headspace Liquid Phase Microextraction System for Determination of Volatile and Semivolatile Analytes

Table 1

Comparison of the GP-HS-LPME and HS-LPME.

Compound	GP-HS-LPME		HS-LPME		GP-HS-LPME/HS-LPME
	Analyte/GCIS	RSD (%)	Analyte/GCIS	RSD (%)
AcPy	36.18	6.45	9.17	10.78	3.95
AcP	34.64	4.56	8.36	9.04	4.14
Flu	23.97	7.03	7.64	8.96	3.13
Phe	30.56	8.16	7.78	12.09	3.93
AnT	27.97	4.69	7.23	15.37	3.87
FluA	12.86	6.38	2.88	16.31	4.47
Pyr	11.93	5.03	2.74	17.83	4.35
B[a]F	2.17	9.45	0.57	19.03	3.81
Chr	2.52	8.53	0.62	19.38	4.06
B[b]F	0.35	6.81	—	—	—
B[k]F	0.28	5.39	—	—	—
B[a]P	—	—	—	—	—
IND	—	—	—	—	—
DBA	—	—	—	—	—
B[ghi]P	—	—	—	—	—

—undetection; AcPy: Acenaphthylene; AcP: Acenaphthene; Flu: Fluorene; Phe: Phenanthrene; AnT: Anthracene; FluA: Fluoranthene; Pyr: Pyrene; B[a]F: Benzo[a]fluoranthene; Chr: Chrysene; B[b]F: Benzo[b]fluoranthene; B[k]F: Benzo[k]fluoranthene; B[a]P: Benzo[a]pyrene; IND: Indeno(1,2,3-cd)pyrene; DBA: Dibenz(a,h)anthracene; B[ghi]P: Benzo(ghi)perylene.