1.1 ,These test methods cover the determination of dissolved and total recoverable selenium in most waters and wastewaters. Both test methods utilize atomic absorption procedures, as follows:
| , | Sections |
| Test Method A—,Gaseous Hydride AAS2, 3 | ,7 –, 16 |
| Test Method B—,Graphite Furnace AAS | 17 –, 26 |