Foreign substances | Lysine-proline | Proline-alanine | Alanine-tyrosine | |
---|---|---|---|---|
 |  | (0.43) | (0.17) | (0.17) |
Cations | Zn2+ | 0.43 | 0.21 | 0.11 |
Cu2+ | - | - | - | |
Mg2+ | 0.44 | 0.15 | 0.09 | |
 | Th4+ | - | - | - |
Anions | Br- | 0.41 | 0.18 | 0.14 |
CH3COO- | 0.41 | 0.17 | 0.18 | |
CO3 - | 0.38 | 0.18 | 0.17 | |
 | NO3 2- | 0.42 | 0.17 | 0.16 |