Table 2 Most abundant monocarboxylate and dicarboxylate anions observed in petroleum-field brines, their most likely maximum concentration in these fluids, and their concentrations used in the composite ore-fluid model of this study
| Acid anion | Model ore-fluid concentration | |||
|---|---|---|---|---|
| IUPAC | Common | Petroleum-field brine concentration (likely maximum, mg L-1)a | /mg L-1 | /mol kg-1 |
| Monocarboxylate anions | ||||
| Ethanoate | Acetate | 5000 | 7700 | 0.13 |
| Propanoate | Propionate | 2000 | – | – |
| Butanoate | Butyrate | 500 | – | – |
| pentanoate | Valerate | 200 | – | – |
| Dicarboxylate anions | ||||
| Propanedioate | Malonate | 100 | 300 | 0.0029 |
| Butanedioate | Succinate | 100 | – | – |
| Pentanedioate | Glutarate | 100 | – | – |