Table 2.

The content of PAHs in soil and plants in different regions.

Area	Soil (mg/kg)		References	Area	Plant (mg/kg)		References
	Range value	Average value			Range value	Average value
Urumqi city transportation area (summer)	2.149–15.709	8.171	17	Nanjing campus	0.224–1.098	0.660	45
Urumqi City Commercial Area (Summer)	0.669–2.338	1.228	17
Urumqi industrial zone area (summer)	0.741–15.347	6.435	17	Guangzhou scenic area	0.460–1.304	0.773	46
Rural district of Urumqi city (summer)	0.331–2.752	1.742	17
Yinchuan city park area	0.122–0.373	0.231	47	Changsha traffic area	3.66–11.13	6.676	26
Fuzhou PARK AREA	0.054–0.385	0.222	49
Xi'an park area	0.362–1.336	0.591	50	Qingdao agricultural district	0.078–0.421	0.223	20
Beijing park area	0.066–6.867	0.460	48
Urumqi city park area (summer)	0.135–12.427	3.304	This research	Urumqi city park area (summer)	0.033–3.941	0.644	This research
Urumqi city park area (winter)	0.033–3.941	0.644	This research	Urumqi city park area (winter)	0.094–0.625	0.308	This research