Table 2.

Concentrations of selected organic compounds in the DPFs leachates quantified by GC-MS in SIM model (μg/L). “±” represents standard deviation of three replicates.

Samples	AP	benzothiazole	DTBP	BPA	phthalide
Controls	0.6 ± 0.1	N.D	N.D	N.D	N.D
Mask 1	6.2 ± 1.2	1.7 ± 0.6	1.6 ± 0.3	1.1 ± 0.3	1.7 ± 0.5
Mask 2	1.2 ± 0.7	2.5 ± 0.5	0.9 ± 0.3	3.2 ± 1.2	1.5 ± 0.3
Mask 3	6.8 ± 1.7	2.9 ± 0.8	3.8 ± 0.9	1.1 ± 0.6	0.9 ± 0.1
Mask 4	4.6 ± 2.1	6.7 ± 2.3	1.5 ± 0.8	1.5 ± 0.7	2.8 ± 1.0
Mask 5	1.8 ± 0.9	9.2 ± 2.7	0.9 ± 0.4	0.8 ± 0.2	4.1 ± 1.2
Mask 6	2.4 ± 0.9	1.6 ± 0.4	3.1 ± 1.1	0.8 ± 0.2	3.3 ± 1.7
Mask 7	0.9 ± 0.4	1.2 ± 0.3	N.D	N.D	N.D
Mask 8	N.D	1.5 ± 0.7	0.8 ± 0.1	N.D	N.D