Test parameters | Symbol | Units | Description of standard analytical methods |
---|---|---|---|
Physical parameters | |||
 pH | pH | pH units | pH meter |
 Total dissolved solids | TDS | mg/L | TDS meter |
 Electrical conductivity | EC | µs/cm | Conductivity meter |
Major cations | |||
 Calcium | Ca2+ | mg/L | Titrimetric |
 Magnesium | Mg2+ | mg/L | Titrimetric |
 Sodium | Na+ | mg/L | ICP-MS |
 Potassium | K+ | mg/L | ICP-MS |
Major anions | |||
 Carbonate | CO32− | mg/L | Titrimetric |
 Bi-carbonate | HCO3− | mg/L | Titrimetric |
 Chloride | Cl− | mg/L | Titrimetric |
 Fluoride | F− | mg/L | Calorimetric |
 Sulphate | SO42− | mg/L | ISE |
 Nitrate | NO3− | mg/L | ISE |
Heavy metals | |||
 Arsenic | As | µg/L | ICP-MS |
 Cadmium | Cd | µg/L | ICP-MS |
 Chromium | Cr | µg/L | ICP-MS |
 Copper | Cu | µg/L | ICP-MS |
 Nickel | Ni | µg/L | ICP-MS |
 Lead | Pb | µg/L | ICP-MS |
 Zinc | Zn | µg/L | ICP-MS |