Research Article

Polymeric Composite Materials for the Detection of Barium Ions in Aqueous Solutions

Table 2

The wavelength of the absorbance maximum for PCM with OMS before and after incubation with Ba(ClO4)2.

Spectral characteristicsPVBPVCCAHPCAB

λ0 (before exposure), nm
λ1 (after exposure), nm
Δλ, nm+16+3+12+3