Figure 3
Pure phthalic acid half-lives degradation values \(({\text{sol}})\) according to Patel et al.5 UV flux. A \(4\text{ sol}\) threshold value can be identified between the bands mainly assigned to the COOH carboxyl group (red) and the bands mainly assigned to ring C–H bands (blue) degradations. Legend: \(\nu\) stretching vibrations; \({\delta }_{p}\) in-plane bending vibrations; \({\delta }_{op}\) out-of-plane bending vibrations.
