Application of Headspace Solid-Phase Microextraction for Determination of Chloro-Organic Compounds in Sewage Samples

Figures & data

Table 1 Physicochemical properties of VHCs and SVHCs

No. of analyte		b.p. (°C)	Mr	d (g/mL^−1)	log Kow
1	1,1-Dichloropropylene	—	110.9	—	2.53
2	1,2-Dichloroethane	83.5	98.9	1.253	1.83
3	Trichloroethylene	86.7	131.1	1.462	2.47
4	1,2-Dichloropropane	96.8	112.0	1.155	2.25
5	cis-1,3-Dichloropropylene	104.3	110.1	1.220	2.29
6	trans-1,3-Dichloropropylene	112.0	110.1	1.217	2.29
7	1,1,2-Trichloroethane	113.8	133.4	1.441	2.01
8	1,3-Dichloropropane	120.4	112.0	1.188	2.32
9	1,2-Dibromoethane	131.7	187.9	2.170	2.01
10	1,1,1,2-Tetrachloroethane	130.5	167.9	1.553	2.93
11	1,1,2,2-Tetrachloroethane	146.3	167.9	1.595	2.19
12	1,2,3-Trichloropropane	156.0	147.4	1.389	2.50
13	1,2-Dibromo-3-chloropropane	195.0	236.3	2.050	2.68
14	Hexachlorobutadiene	210.0	260.8	1.680	4.72

K_ow, octanol–water coefficient; values taken from ref. www.syrres.com/esc/kowdemo.htm.

FIGURE 1 Dependence between peak areas and type of sorption fiber applied for VHC and SVHC mixtures.

FIGURE 2 Comparison between the responses obtained by SPME and HS-SPME techniques.

FIGURE 3 Dependence between extraction time and detector response for VHCs and SVHCs at concentration of 200 μg/L⁻¹.

FIGURE 4 Effect of temperature on the absorption of VHCs and SVHCs.

FIGURE 5 Chromatogram obtained as a result of sewage analysis by HS-SPME-GC/MS method.

Table 2 Limits of detection, linearity, and precision of HS-SPME method

	GC-FID				GC-ECD
No. of analyte	Correlation coefficient (r^2)	Linear range (μg/L^−1)	LOD (μg/L^−1)	RSD (%) (n = 6)	Correlation coefficient (r^2)	Linear range (μg/L^−1)	LOD (μg/L^−1)	RSD (%) (n = 6)
1	0.998	10–200	5.4	6.65	0.989	1.0–100	0.4	6.32
2	0.984	20–200	9.5	7.52	0.982	1.0–100	0.4	4.40
3	0.997	20–200	6.0	4.71	0.983	0.1–100	0.005	5.21
4	0.993	10–200	3.3	5.82	0.984	0.1–100	0.06	5.08
5	0.991	20–200	7.8	6.88	0.989	1.0–100	0.3	7.25
6	0.989	20–200	7.8	7.26	0.989	1.0–100	0.8	7.12
7	0.980	20–200	7.8	6.92	0.988	0.5–100	0.10	5.88
8	0.991	20–200	7.8	4.88	0.983	1.0–100	0.4	6.51
9	0.985	20–200	10.0	5.63	0.997	1.0–100	0.2	6.66
10	0.991	20–200	5.0	5.44	0.989	1.0–100	0.8	5.88
11	0.992	20–200	7.8	3.22	0.987	0.1–100	0.06	5.80
12	0.990	5–200	1.2	4.20	0.981	0.5–100	0.01	8.07
13	0.998	5–200	1.0	6.50	0.997	0.5–100	0.08	6.66
14	0.987	10–200	4.5	4.54	0.987	0.5–100	0.12	5.23

FIGURE 6 Chromatogram obtained as a result of sewage analysis by HS-SPME-GC/ECD method.