Source and Ecological Risk Characteristics of PAHs in Sediments from Qinhuai River and Xuanwu Lake, Nanjing, China

Table 5

The first set of SQGs values (ERL and ERM) for PAHs (ng/g d.w.) and relative percentage of sites including the range of Sediment Quality Guidelines.

Compound	SQG (ng/g)		Autumn (% of sites)			Winter (% of sites)			Spring (% of sites)			Summer (% of sites)
	ERL	ERM	<ERL	ERL–ERM	>ERM	<ERL	ERL–ERM	>ERM	<ERL	ERL–ERM	>ERM	<ERL	ERL–ERM	>ERM
Nap	160	2100	23	77	—	54	46	—	17	83	—	79	21	—
Ace	44	640	23	77	—	100	—	—	33	59	8	57	43	—
Flu	19	540	8	92	—	—	100	—	—	100	—	64	36	—
Phe	240	1500	15	85	—	23	77	—	58	34	8	86	14	—
Ant	85	1100	46	54	—	62	38	—	92	8	—	93	7	—
LMW PAHs	552	3160	23	77	—	23	77	—	—	100	—	71	29	—
Fla	600	5100	100	—	—	100	—	—	100	—	—	100	—	—
Pyr	665	2600	100	—	—	100	—	—	100	—	—	100	—	—
BaA	261	1600	85	15	—	92	8	—	83	17	—	79	21	—
Chr	384	2800	46	54	—	100	—	—	92	8	—	79	21	—
BaP	430	1600	100	—	—	85	15	—	83	17	—	100	—	—
HMW PAHs	1700	9600	92	8	—	100	—	—	92	8	—	100	—	—
Total PAHs	4022	44792	85	15	—	100	—	—	92	8	—	100	—	—