In this experiment, the mixture of xylene isomers was determined by using infrared spectrometry.
Also unknown sample plastic was identified by using the bonding characteristic of polymers and spectroscopy. Xylene has three isomeric forms.
The isomers can be distinguished by the designations ortho- (o-), meta- (m-), and para- (p-). We found that the unknown of xylene contains o-xylene and p-xylene.
The plastic bag sample was used to identify the functional group. There is C-H bond,〖CH〗_2and 〖CH〗_3. We identified that the type of plastic bag sample was polypropylene (PP) because the formula of polypropylene was –[CH2-CH(CH3)]n–. It is used to produce packaging, labeling, and textiles.