Parameter
|
Method
|
Reproducibility
|
---|---|---|
Alkalinity | Gran titration | ±1.5% |
Cl- | Titration with AgCl | ±0.1% |
K+ | Ion chromatography | ±0.02% |
Mg2+ | Ion chromatography | ±0.1% |
Ca2+ | Ion chromatography | ±0.2% |
SO42- | Ion chromatography | ±0.1% |
Si(OH)4 | Spectrophotometry | ±2 µm |
NH4+ | Spectrophotometry | ±4 µm |
HPO42- | Spectrophotometry | ±0.2 µm |
Fe2+ | ICP-AES | ±2.3% |
Mn2+ | ICP-AES | ±2.3% |
H3BO3 | ICP-AES | ±2.4% |
Li+ | ICP-AES | ±4.4% |
Sr2+ | ICP-AES | ±1.0% |
Ba2+ | ICP-AES | ±1.1% |
Note: ICP-AES = inductively coupled plasma-atomic emission spectroscopy.