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. Author manuscript; available in PMC: 2006 Jan 20.
Published in final edited form as: Anal Chem. 2004 Jul 15;76(14):3944–3950. doi: 10.1021/ac049724

Table 1.

Average Signal-to-Noise Ratios of Charge States of Cytochrome c (10−5 M) Formed from Aqueous Solutions Containing 0, 1.0 × 10−3, 1.0 × 10−1, and 8 M Ammonium Acetatea

[NH4Ac] (M) 9+ 8+ 7+ 6+
0 71 ± 25 446 ± 59 88 ± 7 < 2
1.0 × 10−3 51 ± 7 427 ± 82 71 ± 25 4 ± 6
1.0 × 10−1 < 2 155 ± 58 336 ± 33 58 ± 21
8 < 2 379 ± 88 1228 ± 272 50 ± 30
a

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 three replicate measurements.