1 Erratum to: Appl Magn Reson (2010) 37:845–850 DOI 10.1007/s00723-009-0090-7

There was an error in the calculation of the rate constants in p. 849 and they were three orders of magnitude too large.

“The k value obtained from the slope of the linear fit and the [dithionite] used yield k ≈ (0.8 ± 0.1) × 106 M−1 s−1. The rate constant calculated from the data of Lassmann et al. [12, 13] was k ≈ 4 × 106 M−1 s−1” should be replaced with “The k value obtained from the slope of the linear fit and the [dithionite] used yield k ≈ (0.8 ± 0.1) × 103 M−1 s−1. The rate constant calculated from the data of Lassmann et al. [12, 13] was k ≈ 4 × 103 M−1 s−1.”