TABLE III.
Major product rates for radiolysis of air-saturated aqueous l-cysteine solutions.a
| pH 5 | pH 7 | pH 9 | ||||
|---|---|---|---|---|---|---|
| Compound | Aqueous | 40% Glycerol | Aqueous | 40% Glycerol | Aqueous | 40% Glycerol |
| Cysteine | 3.2 ± 0.1 | 4.0 ± 0.04 | 3.1 ± 0.1 | 3.8 ± 0.2 | 1.3 ± 0.2 | 1.9 ± 0.3 |
| Sulfur | 2.5 ± 0.1 | 2.9 ± 0.02 | 1.4 ± 0.1 | 1.9 ± 0.2 | 0.7 ± 0.2 | 1 ± 0.2 |
| Cystine | 0.01 ± 0.002b | 0.01 ± 0.001c | 0.9 ± 0.2 | 0.7 ± 0.1 | n/a | n/a |
| R3S+ | 0.14 ± 0.01 | 0.24 ± 0.02 | n/a | n/a | … | … |
| Sulfite | 0.08 ± 0.02 | n/a | n/a | n/a | … | … |
| Sulfate | 0.03 ± 0.005 | n/a | 0.09 ± 0.01 | n/a | … | … |
a
Rate are in units of ×10−2 scan−1.
b
Rate following scan 7.
c
Rate following scan 5.