Sedimentary Record of Polycyclic Aromatic Hydrocarbons from the Shuanglong Catchment, Southwest China

Table 1

Comparisons of PAHs in different sediments in China.

Sampling site	∑PAHs (ng g^−1)	Pollution level	References
Shuanglong Catchment	102.47~563.24	Moderate	This study
Xiaolangdi Catchment	98.10~329.00	Low-moderate	[53]
Manwan Catchment	14.40~137.70	Low-moderate	[54]
Dongjiang Catchment	85.00~658.00	Low-moderate	[55]
Shilianghe Catchment	17.37~839.55	Low-moderate	[56]
Baoxianghe Catchment	162.26~762.24	Moderate	[57]
Shitou Koumen Catchment	1294.51~2755.35	High	[58]
Yongding Catchment	1377.00~2855.00	High	[59]
Fenhe Catchment	539.00~6218.70	Moderate-very high	[60]
Xidayang Catchment	388.81~1205.56	Moderate-high	[61]
Feitsui Catchment	236.00~1197.00	Moderate-high	[62]

Pollution levels (Baumard et al. 1998), scale of level of contamination: low: 0~100; moderate: 100~1000; high: 1000~5000; very high: >5000 (Baumard et al. 1998) [63].