level: Limit Tests (substance - reagent used)
Questions and Answers List
level questions: Limit Tests (substance - reagent used)
| Question | Answer |
|---|---|
| Arsenic | Diethylthiocarbamate |
| Chloride | Silver Nitrate |
| Sulfate | Barium Chloride |
| Heavy Metals | Hydrogen Sulfide TS |
| Iron | Ammonium Thiocyanate |
| Lead | Ammonia-cyanide soln., ammonium citrate (violet color), hydroxylamine HCl, dithizone |
| Arsenic METHOD USED | Spectrophotometry (353nm, 545nm) |
| Ca, Na, Cl METHOD USED | Flame Photometry |