Table 1.
Physicochemical parameters (mean ± SE) per container class on Guadeloupe (G) and in French Guiana (FG). Significant differences between G and FG for a given parameter and container type are shown in italic. Different letters indicate significant differences for a given parameter among container types in a same locality (G or FG) (P < 0.05). COD, chemical oxygen demand; Cu, copper; Fe, iron; Zn, zinc; Ca, calcium
| Parameter | Locality | Large waste | Small waste | Buckets | Tyres | Drums | Water troughs | Plant containers | Boats | Gutters | Cisterns |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Temperature (°C) |
G | 28 ± 1 | 29 ± 0.9 | 29 ± 1.6 | 30 ± 2 | 29 ± 1.8 | _ | 29 ± 0.9 | _ | 29 ± 0.5 | 26 |
| FG | 28 ± 2 | 27 | 29 ± 2.5 | 28 ± 1.7 | 29 ± 2.1 | 24 | _ | 34 ± 4.9 | _ | _ | |
| pH | G | 8 ± 1 | 8 ± 1 | 8 ± 0.7 | 8 ± 0.5 | 8 ± 0.8 | _ | 8 ± 0.5 | _ | 7 ± 0.4 | 6 |
| FG | 7 ± 0.5 | 7 | 7 ± 0.5 | 7 ± 0.7 | 7 ± 0.3 | 7 | _ | 8 ± 0.9 | _ | _ | |
|
Salinity (g/L) |
G | 0.2 ± 0.2 | 0 | 0 ± 0.1a | 0.1 ± 0.1 | 0 | _ | 0.1 ± 0.1 | _ | 0 | 0 |
| FG | 0.1 ± 0a | 0.2abc | 0abc | 0.1 ± 0.1ab | 0c | 0.1abc | _ | 0.1abc | _ | _ | |
|
Conductivity (μS/cm) |
G | 464 ± 554abc | 299 ± 205abc | 230 ± 215a | 304 ± 148ab | 96 ± 79c | _ | 455 ± 230abc | _ | 202 ± 57abc | 45abc |
| FG | 166 ± 179 | 356 ± 49 | 105 ± 120 | 213 ± 225 | 35 ± 26 | 236 | _ | 199 ± 32.5 | _ | _ | |
| Dissolved oxygen (mg/L) | G | 10 ± 1 | 9 ± 1 | 9 ± 2.3 | 9 ± 1.4 | 9 ± 2.1 | _ | 9 ± 2.5 | _ | 8.3 ± 1.8 | 9 |
| FG | 3 ± 1.7 | 0 | 4 ± 1.54 | 3.4 ± 1.8 | 4 ± 1.3 | 9 | _ | 6 ± 1.3 | _ | ||
|
Turbidity (FNU) |
G | 8 ± 5.7ab | 47 ± 29.8ab | 27 ± 28.2ab | 55 ± 29.9a | 16 ± 20b | _ | 46 ± 31ab | _ | 51 ± 30.7ab | 7ab |
| FG | 49 ± 84a | 133abc | 18 ± 22abc | 120 ± 49b | 7 ± 8c | 10abc | 10 ± 6.7abc | _ | _ | ||
|
Ca (mg/L) |
G | 17 ± 9.2abc | 14 ± 7.8abc | 26 ± 36.2abc | 35 ± 14.8a | 11 ± 11.9b | _ | 35 ± 19 ac | _ | 20 ± 19.1abc | 2abc |
| FG | 11 ± 0.6a | 18ab | 12 ± 17.5ab | 11 ± 7.3ab | 2 ± 1.9b | _ | _ | 20 ± 8.9ab | _ | _ | |
|
Mg (mg/L) |
G | 8.1 ± 10.5abcd | 3.8 ± 2.2abcd | 4.7 ± 8.7a | 3.5 ± 2.2ab | 1.0 ± 01.3c | _ | 7.0 ± 4.7abd | _ | 1.7 ± 0.3abcd | 0abcd |
| FG | 1.4 ± 0.6 | 4.5 | 1.5 ± 2.2 | 1.2 ± 1 | 0.2 ± 0.4 | 2.3 | _ | 2.3 ± 0.5 | _ | _ | |
|
Cu (mg/L) |
G | 0.01 ± 0ab | 0ab | 0ab | 0.02 ± 0a | 0b | _ | 0.01 ± 0ab | _ | 0ab | 0ab |
| FG | 0.03 ± 0abc | 0abc | 3 ± 9.9a | 0.04 ± 0b | 0 ac | _ | 0abc | _ | _ | ||
|
Fe (mg/L) |
G | 0ab | 2.7 ± 2.6ab | 0.5 ± 1ab | 0.8 ± 0.9a | 0.3 ± 0.8b | _ | 0.3 ± 0.3ab | _ | 0.5 ± 0.3ab | 0.1ab |
| FG | 11 ± 26.6abc | 22.9abc | 0.5 ± 0.4a | 10.9 ± 5.4b | 1.3 ± 2.4 ac | 2.7abc | _ | 2.7 ± 0.9abc | _ | _ | |
|
Zn (mg/L) |
G | 0ab | 0ab | 0.3 ± 0.6ab | 1.0 ± 1.3a | 0.5 ± 0.6ab | _ | 0b | _ | 1.3 ± 1.7ab | 3.1ab |
| FG | 4 ± 6.7a | 0.2ab | 0.5 ± 0.6b | 2.7 ± 1.8ab | 1.3 ± 0.9ab | _ | _ | 1.3 ± 1ab | _ | _ | |
|
COD (mg/L) |
G | 21 ± 10.5abc | 56 ± 46abc | 46 ± 45a | 195 ± 168b | 24 ± 30ac | _ | 49 ± 25.6abc | _ | 20 ± 5.1abc | 20abc |
| FG | 229 ± 426a | 529abc | 54 ± 43abc | 216 ± 153ab | 17 ± 35c | 242abc | _ | 242 ± 149.2abc | _ | _ |