Table 4.

The carcinogenic and noncarcinogenic risk index of detected PAHs in effluent.

	Q	RfD	Risk Index
			23 November	2 December	9 December	17 December
BaA	0.73	-	1.6 × 10−5	1.3 × 10−5	1.4 × 10−5	1.3 × 10−5
CHR	0.0073	-	7.7 × 10−8	6.1 × 10−8	5.7 × 10−8	5.1 × 10−8
NAP	-	0.02	9.8 × 10−10	1.2 × 10−9	2.4 × 10−9	2.6 × 10−9
ANE	-	0.06	8.3 × 10−11	1.0 × 10−10	1.3 × 10−10	1.0 × 10−10
ANA	-	0.06	2.1 × 10−10	1.6 × 10−10	1.9 × 10−10	1.8 × 10−10
FLU	-	0.04	2.5 × 10−10	2.8 × 10−10	3.2 × 10−10	3.2 × 10−10
PYR	-	0.03	7.4 × 10−10	5.9 × 10−10	6.4 × 10−10	5.9 × 10−10

Q = carcinogenic intensity factor; RfD = drinking reference dose of noncarcinogen.