Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Water quality parameters during the experiment
| Parameter | Group | ||
|---|---|---|---|
| C | Cu-s + Cu-l | Cd-s + Cd-l | |
| Temperature (°C) | 17.0 ± 0.5 | 17.1 ± 0.5 | 17.2 ± 0.6 |
| Hardness (mg/dm3 CaCO3) | 179–198 | ||
| pH | 6.8–7.0 | ||
| O2 (mg/dm3) | 8.9 ± 0.6 | 9.0 ± 0.2 | 8.8 ± 0.5 |
| NO2 − (mg/dm3) | 0.03 ± 0.01 | 0.06 ± 0.02 | 0.04 ± 0.02 |
| NH4 + (mg/dm3) | 3.9 ± 0.6 | 5.2 ± 0.8 | 6.1 ± 1.6 |
