Table T3. Analytical methods and precisions for interstitial water geochemical measurements.
| Parameter | Precision (%) |
Method |
|---|---|---|
| Cl– | 0.1 | Titration with AgNO3 |
| SO42– | 2.3 | Ion chromatography |
| NH4+ | 1.7 | Spectrophotometer |
| Na+ | 3.1 | ICP-AES |
| K+ | 10.8 | ICP-AES |
| Mg2+ | 8.8 | ICP-AES |
| Ca2+ | 6.2 | ICP-AES |
| Li+ | 2.6 | ICP-AES |
| Sr2+ | 3.6 | ICP-AES |
| Ba2+ | 15.8 | ICP-AES |
| Mn2+ | 2.8 | ICP-AES |
| Fe2+ | 4.5 | ICP-AES |
| H3BO3 | 4.8 | ICP-AES |
| H4SiO4 | 5 | ICP-AES |
Note: ICP-AES = inductively coupled plasma–atomic emission spectroscopy.
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