Polycyclic aromatic hydrocarbons in surface sediments of mangrove wetlands in Shantou, South China

In order to clarify the distribution, sources, and ecological risk of 16 polycyclic aromatic hydrocarbons (PAHs) in sediments of mangrove wetland located in Shantou, twenty eight surface sediments were collected. The concentration of PAHs ranged from 79.74 to 853.17 ng g−1 dry weight. The concentration of PAHs of sediment in the high tides was higher than that in the low tides and higher in mangrove-planting area than that in non-mangrove growth...