Research Article
Assessment of Physical-Chemical Characteristics of Water and Sediments from a Brazilian Tropical Estuary: Status and Environmental Implications
Table 4
Exchangeable concentrations of Cd, Cu, Pb, and Zn (mg kg−1) in sediments collected from the Jacuípe River’s estuary, .
| Date (sampling) | Point | Cd | Cu | Pb | Zn |
| 03/2007 (1) | 1 | <0.05* | 10, | <5.0* | <1.3* | 2 | <0.05 | | <5.0 | | 3 | <0.05 | | <5.0 | | 4 | <0.05 | | <5.0 | | 5 | <0.05 | | <5.0 | |
| 07/2007 (2) | 1 | | | <5.0 | <1.3 | 2 | | | <5.0 | | 3 | | | <5.0 | | 4 | | | <5.0 | | 5 | | | <5.0 | |
| 08/2007 (3) | 1 | | | <5.0 | | 2 | | | <5.0 | | 3 | | | <5.0 | | 4 | | | <5.0 | | 5 | | | <5.0 | <1.3 |
| 09/2007 (4) | 1 | <0.05 | | <5.0 | | 2 | <0.05 | | <5.0 | <1.3 | 3 | <0.05 | | <5.0 | | 4 | <0.05 | | <5.0 | | 5 | <0.05 | | <5.0 | |
| 10/2007 (5) | 1 | <0.05 | <1.3* | <5.0 | <1.3 | 2 | <0.05 | <1.3 | | <1.3 | 3 | <0.05 | | <5.0 | | 4 | <0.05 | | | | 5 | <0.05 | | | <1.3 |
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*Limit of detection as 3σ [24].
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