170135_inorganicventures_flipping

15.7 ICP-OES Measurement

Concerns with measurement: Spectral interferences

• A trace metals analysis of the 1000 μg/mL solu8ons helps dis8nguish between a true direct spectral overlap and the presence of the analyte in the interfering element solu8on as an impurity. • The absence of impurity data requires confirma8on of the suspected direct spectral overlap using an alternate analyte line or another technique such as flame atomic absorp8on. • Standards with accurate trace metals impurity data are commercially available.

15.8 ICP-OES Measurement

Concerns with measurement: Spectral interferences Spectrum of a high Ca containing matrix (red line) causing a sloping background for the Cu 219.959 or Ge 219.871 lines. Background correcCon is difficult at best in these situaCons.