3.2.4. Sample volume
The variations of the integrated absorbance of Cu with the
applied seawater volume (5 L to 4×25L) were linear and
similar to the analytical curves obtained in water. When Pd
was not used, a curvature was observed for volumes higher
than 25L. In the case of Mn, the variations of the integrated
absorbance with the analyzed seawater volume were similar,
with or without the use of Pd. However, a slight curvature
as compared to water could be observed for volumes higher
than 2 × 25L.