Research Article
Spatial Variability of Heavy Metals in Soils and Sediments of “La Zacatecana” Lagoon, Mexico
Table 5
Geoaccumulation Index (Igeo) values of heavy metals of soils and sediments from the different sampling sites of the La Zacatecana Lagoon.
| Site sampling | Igeo | Pb | As | Hg | Cd | Cr | Ni |
| I | 2.3 | 2.9 | 1.6 | 3.6 | −0.6 | 0.3 | II | 3.1 | 2.7 | 1.8 | ND | −2.5 | −1.6 | III | 2.6 | 2.4 | 0.3 | ND | −1.8 | −1.4 | IV | 1.9 | 2.3 | 0.6 | 3.9 | −0.8 | 0 | V | 1.6 | 2.1 | 0.03 | ND | −2.6 | −2 | VI | 1.3 | 2.0 | −0.6 | ND | −2.3 | −2.7 | VII | 0.6 | 1.2 | −0.7 | ND | −2.5 | −2.7 | VIII | 7.3 | 2.8 | −0.3 | ND | −2.7 | −3.4 | IX | 4.8 | 3.1 | 1.9 | ND | −2.7 | −2.5 | X | 5.3 | 4.3 | 2.0 | ND | −2.8 | −2.1 | XI | 2.2 | 2.1 | −0.4 | ND | −2.2 | −1.3 | XII | 5.3 | 4.7 | 1.0 | 2.6 | −0.7 | 0.3 | XIII | 2.2 | 2.1 | −0.6 | ND | −2.1 | −1.4 | XIV | 3.8 | 2.7 | −0.01 | ND | −1.3 | −0.5 |
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ND = notdetected.
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