## 3 Results and Discussion
### Can Coatings Analysis via SPME
The analysis was performed either via gas chromatography-olfactometry-mass spectrometry (GC-O-MS) or by aroma extract dilution analysis with dichloromethane [37; 39]. Other common compounds also detected via GC-O-MS were 1-hexanol-2-ethyl, which is produced on a massive scale as a solvent and also as a precursor for the production of plasticizers with a green odor [37]. Benzaldehyde, which was detected in samples BC01 and BC05, has been reported in recycled cardboard [40] as well in adhesives [41]. Moreover, it is a very common natural flavor that might be present in beverages. 2-Azepanone, also known as caprolactam, was detected in all samples analyzed except in sample BC02; besides its use as food flavoring it has a widespread use in food packaging materials and clothing. For example, it was used in coating powders for protective films to block isocyanates [42]. Carcinogenicity studies had considered that 2-azepanone was not carcinogenic under the conditions of the bioassay in F344 rats and B6C3F1 mice [43]. DEP was also extracted with SPME, and this phthalate is the most commonly used plasticizer worldwide in many industrial products, including tools, automotive parts, toothbrushes, food packaging, cosmetics, and insecticides [44]. 2-Butoxyethanol, which was present in all samples, is used as a solvent in coatings formulation [45]. Diphenylmethanone or benzophenone was detected in samples BC01, BC02, and BC03; this substance has been used in polymeric photoinitators for UV curing coatings [46]. Other compounds like tetramethyl benzenes have been reported in apple juice. The analytes were isolated via SPME using a 50/30 \(\upmu\)m divinylbenzene/Carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber [47]. Other compounds identified in several samples were propylene glycol and 2,2-dimethyl-1,3-propanediol, also known as neopentyl glycol, which are commonly employed in the manufacturing of polyurethane [48; 49]. 2-Phenoxyethanol was only identified in sample BC04. This compound has been reported in TritanTM copolyester, a potential substitute of polycarbonate. The compound was determined in aqueous extracts purified with solid-phase extraction (SPE) and then analyzed via GC-MS [50]. Degradation products of the antioxidants Iregafos 168, Iriganox 1076, or Iriganox 1010, specifically 2,4-ditertbutylphenol and 2, 6-di-tert-butyl-1,4-benzoquinone, were identified in various samples [51]. 2, 6-Di-tert-butyl-1,4-benzoquinone presents intermediate toxicity (Class II). These compounds have been reported as NIAS. Only two of the identified compounds, 2-azepanone and diphenylmethanone, belong to Cramer Class III. \begin{table}
\begin{tabular}{c c c c c c c} \hline
**Tr/min** & **Compound** & **CAS** & **Fl No.** & **S1** & **RS1** & **Sample(s)** & **TC** \\ \hline
28.28 & Unknown compound (\(m/z\) 213,109) & & & & BC05 & \\ \hline
28.32 & Alcohol & & & & BC01, BC04 & \\ \hline
28.60 & Diphenylmethanone \({}^{*}\) & 119-61-9 & 07.032 & 717 & 941 & BC01- BC03 & III \\ \hline
29.56 & Lactone structure & & & & BC05 & \\ \hline
29.69 & Unknown compound (\(m/z\) 81, 99; & & & & BC01, BC07 & \\  & methanone structure) & & & & & BC01, BC04 & I \\ \hline
30.07 & Tetradecanoate & 110-27-0 & 09.105 & 619 & 848 & BC01, BC04 & I \\ \hline
30.65 & Unknown compound (\(m/z\) 219,191) & & & & BC08 & \\ \hline
30.85 & Unknown compound (\(m/z\) 69) & & & & BC08 & \\ \hline
31.85 & Phthalate structure (\(m/z\) 149) & & & & BC04, BC08 & \\ \hline \end{tabular} \({}^{*}\) Substances confirmed with a standard solution.  
\end{table} 
Table 4: _Cont._