TABLE 3.
Recovery of Giardia sp. from high-iron-concentration matrices
| Matrix iron concn (mg/liter) | Trial 1 (broad range, iron)
|
Trial 2 (broad range, aged)
|
Trial 3 (EDTA remediation)
|
Trial 4 (narrow range, iron)
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % Recovery | SD (%) | n | % Recovery | SD (%) | n | % Recovery | SD (%) | n | % Recovery | SD (%) | n | |
| 0 | 74.0 | 6.7 | 3 | 26.0 | 3.7 | 3 | 29.0 | 23.5 | 3 | |||
| 0.4 | 71.2 | 10.8 | 3 | 25.2 | 10.5 | 3 | NDa | ND | ND | |||
| 4 | 68.9 | 13.6 | 3 | 22.9 | 7.7 | 3 | 6.2 | 5.3 | 3 | |||
| 20 | 46.6 | 8.3 | 3 | |||||||||
| 40 | 72.9 | 7.5 | 3 | 12.7 | 7.0 | 3 | 38.1 | 5.9 | 3 | |||
| 50 | 54.0 | 11.7 | 3 | |||||||||
| 100 | 52.1 | 8.8 | 3 | |||||||||
| 200 | 8.7 | 3.0 | 3 | |||||||||
| 300 | 5.7 | 3.1 | 3 | |||||||||
| 400 | 0.1 | 0.2 | 3 | 0.0 | 0.0 | 3 | 4.3 | 4.6 | 3 | |||
a
ND, not determined.