Table 3.
The additive volume and concentrations of volatile fatty acid standards added to the standard stored solution.
| Acetate | Propionate | Butyrate | Isobutyrate | Isovalerate | Valerate | |
|---|---|---|---|---|---|---|
| Additive volume μL |
60 | 40 | 20 | 5 | 5 | 5 |
| Concentration 1 g/L |
0.63 | 0.40 | 0.19 | 0.048 | 0.047 | 0.047 |
| Mol concentration 2 mmol/L |
10.41 | 5.35 | 2.19 | 0.54 | 0.46 | 0.46 |
1 Concentration of additive standards (g/L) = density of standards (g/mL) × additive volume (μL) ÷ 100. 2 Mol concentration (mmol/L) = concentration of additive standards (g/L) ÷ molar mass of standards (g/mol) × 1000.