Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Retention time and target m/z values of the SCFAs and internal standard.
| Analytes | Retention Time (min) | Target Ion (m/z) |
Confirmative Ion (m/z) |
|---|---|---|---|
| Acetic acid | 7.92 | 60.0 | 43.0 |
| Propionic acid | 9.32 | 74.0 | 45.0 |
| Butyric acid | 10.92 | 60.0 | 73.0 |
| Valeric acid | 13.02 | 60.0 | 73.0 |
| Acetic acid-d4 a | 7.84 | 63.0 | 46.0 |
| Butyric acid-d7 b | 10.74 | 63.0 | 77.0 |
a Internal standard of acetic acid; b Internal standard of propionic acid, butyric acid, and valeric acid.
