Research Article
A Method for Identifying Pollution Sources of Heavy Metals and PAH for a Risk-Based Management of a Mediterranean Harbour
Table 2
Weights of each chemical on the overall variance.
| PCA of chemicals | (A) % overall variance | (B) % overall variance (after Zn elimination) |
| Arsenic | 0.31 | 1.23 | Cadmium | 0.36 | 1.48 | Cobalt | 0.01 | 0.10 | Total chromium | 0.09 | 0.45 | Chromium VI | 0.00 | 0.00 | Mercury | 0.48 | 1.75 | Nickel | 0.15 | 0.67 | Lead | 13.75 | 51.72 | Copper | 2.09 | 7.80 | Tin | 0.14 | 0.91 | Zinc | 76.29 | ā | Benzo(a)anthracene | 0.15 | 0.73 | Benzo(a)pyrene | 0.10 | 0.47 | Benzo(b)fluoranthene | 0.10 | 0.43 | Benzo(k)fluoranthene | 0.09 | 0.40 | Benzo(g,h,i)perylene | 0.07 | 0.30 | Chrysene | 0.15 | 0.70 | Dibenzo(a,h)anthracene | 0.02 | 0.06 | Indeno(1,2,3-c,d)pyrene | 0.06 | 0.27 | Pyrene | 0.31 | 1.43 | Sum-PAH | 0.86 | 3.89 | Hydrocarbons C < 12 | 0.00 | 0.01 | Hydrocarbons C > 12 | 4.39 | 25.19 |
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