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Signal-to-Noise Ratios of Charge States of Ubiquitin (10−5 M) Formed from Aqueous Solutions Containing 2.0 × 10−2 M Sodium Chloride and 0, 1.0 × 10−1, or 7 M Ammonium Acetatea
| [NH4Ac] (M) | 6+ | 5+ |
|---|---|---|
| 0 | < 2 | 68 ± 131 |
| 1.0 × 10−1 | 3 ± 5 | 31 ± 50 |
| 7 | 28 ± 10 | 751 ± 167 |
For each solution, the signal-to-noise ratio of the charge state of highest abundance is in boldface type. Reported errors are ±1 standard deviation from the mean for five replicate measurements.
