Table 2 Summary of analytical methods used for surface water sample (APHA [18])
Parameter | Method | Description |
|---|---|---|
Total alkalinity | APHA 2320 B | Titrimetric |
pH | Membrane Electrode | Portable HACHâ„¢ model 150 |
EC | Membrane Electrode | Portable HACHâ„¢ model 150 |
TDS | Membrane Electrode | Portable HACHâ„¢ model 150 |
Temperature | Membrane Electrode | Portable HACHâ„¢ model 150 |
Ammonia | APHA4500-NH3 C | Spectrophotometric, Phenate |
Nitrate | Yang et al., 1998 | Spectrophotometric, sodium salicylate |
Nitrite | APHA4500- NO2− A | Spectrophotometric, Colorimetric |
TN | APHA4500- N C | Spectrophotometric, Kjeldahl method |
Phosphate | APHA4500-P C | Spectrophotometric, Ascorbic Acid |
TP | APHA4500-P C | Spectrophotometric, Persulfate digestion method, then Ascorbic acid method |
Secchi depth | Lind | Field equipment |
Dissolved oxygen | Membrane Electrode | probe method (YSI model 58) |
Silica | APHA4500-SiO2 | Spectrophotometric, Molybdosilicate Method |