Table 1.
List of tested physicochemical parameters with methods of their determination [32].
| Pollution Indicators | Name of the Method | Standard/Source |
|---|---|---|
| pH | Potentiometric method | ISO 10523:2008 |
| EC | Conductometric method | ISO 7888:1985 |
| COD | Bichromate titration method | ISO 6060:1989 |
| TKN | Method after mineralization with selenium | ISO 5663:1984 |
| ON | Computational method | [33] |
| AN | Spectrophotometric method | ISO 7150-1:1984 |
| N-NO3− | Spectrophotometric method | ISO 7890-3:1988 |
| N-NO2− | Spectrophotometric method | ISO 6777:1984 |
| TS | Computational method | [34] |
| TDS, TSS | Filtration though glass-fibre filters | ISO 11923:1997 |
| Sulphates | Gravimetric method using barium chloride | ISO 9280:1990 |
| Chlorides | Mohr’s method | ISO 9297:1989 |
| Sodium | Atomic Absorption Spectrometric method (AAS) | ISO 9964-1:1993 |
| Potassium | Atomic Absorption Spectrometric method (AAS) | ISO 9964-2:1993 |
| Calcium, Magnesium | Atomic Absorption Spectrometric method (AAS) | ISO 7980:1986 |
| Iron | Spectrophotometric method | ISO 6332:1988 |
| Manganese | Spectrophotometric method | ISO 6333:1986 |
| Copper, Zinc, Chromium, Lead, Nickel, Cadmium | Atomic Absorption Spectrometric method (AAS) | ISO 15586:2003 |