TABLE 4.
Recovery of Pan-1 and poliovirus seeded in different water samples followed by concentration and detection with PA
| Water type | Sample pH | Vol (liter) | Turbidity (NTU)a | % Recovery (range)b |
|---|---|---|---|---|
| Pan-1 | ||||
| Surface | 7.1 | 1.9–2.3 | 8.9 | 14 (12–16) |
| Ground | 5.2c | 40 | 0.5 | 19 (18–20) |
| Finished | 6.9 | 40 | NTd | 38 (32–44) |
| Poliovirus | ||||
| Finished | 6.9 | 40 | NT | 53 (51–55) |
a
NTU, nephelometric turbidity units.
b
The recovery rates were based on the results of three replicate experiments. One-third of each final sample was tested by PA at dilutions of 1:50 and 1:100.
c
The original pH of groundwater was 5.2, and the pH was adjusted to 7.0 to 7.5 before the virus was added.
d
NT, not tested.