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Quantitative detection of Pt in electrolyzed hydrogen water (EHW) samples (n = 3) via ICP-MS (Parkin Elmer Elan DRC-e). The calibration curve was obtained by using the standard samples of 15, 7.5, 5.0, 2.0, and 1.0 ppb Pt contained 5.0% HCl. The 20 nm pored alumina filter was obtained from Whatman.
| Samples | Tap water | EHW | EHW + 5.0% HCl | Filtered EHW |
|---|---|---|---|---|
| Pt (ppb) | ND | 3.3 ± 0.2 | 5.1 ± 0.1 | 1.1 ± 0.1 |
*ND: Not detectable.
