Table 3 Recoveries obtained after spiking 1:10 diluted (1:100 for glucuronic acid, galacturonic acid and glyoxylic acid) hydrolysate with 1 ppm, 5 ppm and 10 ppm
Compound | Recovery 1 μg/mL (%) | Recovery 5 μg/mL (%) | Recovery 10 μg/mL (%) |
|---|---|---|---|
Oxalic acid | 93.5 | 104.3 | 92.6 |
cis-Aconitic acid | 100.0 | 115.9 | 112.3 |
Maleic acid | 108.2 | 116.3 | 113.2 |
Glucuronic acid | 109.8 | 119.4 | 115.8 |
Citric acid | 89.4 | 104.3 | 95.0 |
Galacturonic acid | 98.9 | 108.0 | 108.6 |
Gluconic acid | 106.6 | 115.4 | 130.0 |
Pyruvic acid | 126.4 | 110.7 | 117.9 |
Tricarballylic acid | 94.2 | 111.8 | 120.9 |
Glyoxylic acid | 425.6 | 323.9 | 235.1 |
Malic acid | 108.3 | 117.7 | 178.6 |
Malonic acid | 98.2 | 217.1 | 248.6 |
trans-Aconitic acid | 91.6 | 90.6 | 106.3 |
Methylmalonic acid | 98.3 | 105.4 | 109.5 |
Succinic acid | 94.8 | 93.8 | 92.6 |
Glycolic acid | 73.9 | 94.8 | 80.6 |
Lactic acid | 105.4 | 107.4 | 103.7 |
Itaconic acid | 109.9 | 112.8 | 120.9 |
Glutaric acid | 101.3 | 99.9 | 89.3 |
Fumaric acid | 99.2 | 101.6 | 100.0 |
2-Hydroxy-2-methylbutyric acid | 100.2 | 100.9 | 102.8 |
Adipic acid | 99.1 | 90.5 | 94.7 |
Levulinic acid | 85.0 | 96.8 | 93.7 |
2-Furoic acid | 93.5 | 104.3 | 92.6 |