Table 3. Comparison of the Heavy Metal Content in Surface Sediments of China and International Mangrovesa.
| location | Co | V | Cu | Pb | Ni | As | Cd | Hg | references |
|---|---|---|---|---|---|---|---|---|---|
| Zhanjiang Bay | 2.91 | 29.96 | 18.24 | 20.07 | 7.86 | 5 | 0.2 | 0.09 | this study |
| Donghai Island, Zhanjiang | / | / | 12.5 | 27 | 17.2 | 12.5 | 0.04 | 0.07 | (30) |
| Dongzhai Harbor, Hainan, China | / | / | 19.51 | 20.52 | 30.4 | 8.52 | 0.56 | / | (31) |
| Maowei Sea Guangxi, China | 20.1 | / | 61.9 | 48.9 | 50.7 | / | 0.79 | / | (2) |
| Beihai of Guangxi, China | / | / | 3 | 7 | <3.00 | <3.00 | <0.04 | (41) | |
| Nansha,South China Sea | / | / | 113 | 55.3 | 48.4 | / | 0.78 | / | (35) |
| Futian of Shenzhen, China | / | / | 82.6 | 105 | 117 | / | 5.7 | / | (33) |
| Qi’ao Island, Zhuhai, China | / | / | 81.5 | 70.6 | 50.4 | / | 9.5 | / | (34) |
| Pearl River Estuary, China | / | / | 321.48 | 49.89 | 56.7 | / | 2.26 | / | (36) |
| Maipo, Hong Kong | / | / | 42.8 | 52.6 | 36.4 | / | 1.05 | / | (37) |
| Southern Vietnam | 19.6 | / | 27 | 21 | 53 | / | 0.1 | / | (32) |
| Senegal, West Africa | 0.9 | 14.3 | 3.5 | 2.4 | 2.5 | / | 0.03 | 0.01 | (8) |
| Gulf of Khambh, India | 0.25 | / | 11.64 | 7.14 | 34.66 | 2.79 | 0.09 | 0.12 | (42) |
| Saudi Arabia | 3.94 | 759.15 | 209.8 | 4.4 | 81.05 | 23.75 | 1.67 | 1.98 | (38) |
| Sungei Buloh, Singapore | / | / | 7.06 | 12.28 | / | / | 0.18 | / | (40) |
| Sinnamary, French Guiana | 0.32 | / | 0.28 | 0.13 | 0.54 | / | / | 0.41 | (39) |
a
Note: “/” represents no data.