With FAA pneumatic nebulizers, samples are taken up continuously
consuming a few milliliters of sample. After a few seconds of aspiration
(several hundreds of μL of the sample), a continuous signal can be obtained.
However, small (b200 μL) sample volumes can also be injected.
The small volumes of the samples were injected from a funnel or
hemisphere-shape cup made from a hydrophobic PTFE plate.