## 3 Results and Discussion
### Real Sample Application  
Finally, the water contained in 15 containers for different uses was analyzed. In particular, we examined six bottles of water with a volume of between 1 and 2 L, all in polyethylene terephthalate, but with different consistency and color; three baby bottles, two of which were in low-density polyethylene and one in polyethylene; and, finally, six sport bottles, five of which were made of polyethylene and one of low-density polyethylene.  
The determination of the water bottles was carried out using all the available volume, whereas for the bottles and sport bottles the volume was increased to 1 L with ultra-pure water. After measuring the blank, release tests were performed for the bottles after a week, fifteen days, a month, and two months. For the feeding bottles and sport bottles, the study was concentrated in a few hours, because the use of these containers was limited in time; the analyses were carried out each hour during a total period of six hours. Only in two of the fifteen samples did the release of phthalates from the vessel  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Compounds** & **Matrix** & **Recoveries (\%)** &
\begin{tabular}{c} **LODs/LOQs** \\ **(ng mL\({}^{-1}\))** \\ \end{tabular} & **References** \\ \hline DEP, DBP, BPA & drinking water & 62–105 & 7–29/23–44\({}^{\text{a}}\) & [71] \\ DEHP,-BPA & soft drinks, milk powder & 83.0–102.5 & 13–21/46–66\({}^{\text{b}}\) & [51] \\ DEP, DMP, DEP, BBP, \(-\)BPA, DEHP & French mineral waters & 90–110 & 0.1–1.6/10–30\({}^{\text{b}}\) & [52] \\ DMP, DEP, DBP, \(-\)BPA, DEHP & seafood & 57–119 & 0.034/0.64/\({}^{\text{c}}\) & [72] \\ DEP, DBP, DEHP, BPA & drinks, wine, beer, & 90–100 & 0.04–0.38/- & [73] \\  & distilled beverages & & & \\ DMP, DEP, DEP, DBP, BPA & honey & 81.2–119.8 & 5–303/3–270 & [53] \\  & DEP, DBP, DEHP, BPA & environmental water & 75.3–84.3 & 2.0–8.5/6.6–28.0 & [74] \\ BPA, BP-S, DBP, DEHP, DEP & medical devices & 95.7–109 & 0.8–15.5/2.3–46.9\({}^{\text{b}}\) & [75] \\ BPA, BPA, BPB, BPS, BPP & ready-to-eat plastic & 91–106 & 0.1–1.0/0.5–4\({}^{\text{c}}\) & [76] \\  & packaged baby foods & & & \\ DMP, DEP, DBP, DBP, DEHP & & & & \\ DEF, DBP, BPA, BBP, DEHP & fruit juice & 81.9–109.6 & 20–300/60–1100 & [78] \\ DMF, DEP, DiBP, DBP, BPA, & mineral water, tap water & 93.4–104.5 & 1–8/6–14 & This study \\ \hline \hline \end{tabular}  
a: expressed as ug mL\({}^{-1}\); b: expressed as ng L\({}^{-1}\); c: expressed as ng g\({}^{-1}\).  
\end{table}
Table 4: Analytical parameter comparison among different studies performed for simultaneous PAEs/BPA determination in food and beverage matrices.  
appear relevant; in particular, the releases of DiBP and DBP from a sport bottle (Figure 8a) and of DEHP and DOP from a bottle (Figure 8b) were found. Regarding BPA, it should be noted that it was not found in any sample. The three baby bottles and the two sport bottles carried the label \"BPA-free\" and this justifies why it was not found. The six bottles did not show any information as the other sport bottles used for the analysis, so it is difficult to extrapolate considerations on the reasons for the lack of BPA determination.