2012
DOI: 10.29105/qh2.3-151
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Análisis de Monómero Residual en Envases de Poliestireno Grado Alimenticio

Abstract: En el presente trabajo se realizó el análisis de estireno residual en vasos de poliestireno mediante espectroscopia infrarroja; así mismo, se determinaron las condiciones del análisis cromatográfico tanto de HPLC como de cromatografía de gases, para determinar la concentración de este monómero en vasos grado alimenticio. Una muestra de vasos de poliestireno se disolvió en acetona, se precipitó con metanol, el extracto concentrado fue analizado bajo determinadas condiciones de cromatografía de líquidos de alta … Show more

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“…The olive samples for the highest-quality commercial category also contained cyclohexanecarboxylic acid; ethyl ester (6.6%), which is perceived as a fruity and cheesy wine smell [ 31 ]; and, in very similar proportions, copaene (6.5%), which has an earthy touch similar to boiled potato [ 32 ]. Styrene (5.3%) was also identified, presenting a sweet, balsamic and floral odour with a plastic touch [ 33 ], together with p -xylene (5.1%), which presents a sweet, aromatic odour [ 34 ], and 3-hexen-1-ol, acetate (3.9%), which has a fresh, sweet, green apple or herbaceous odour [ 35 ]. Although at a very low concentration, the compound octan-1-ol (1.7%) was specific to this sample from the extra quality olives and stood out for its fresh and citric aroma [ 36 ].…”
Section: Resultsmentioning
confidence: 99%
“…The olive samples for the highest-quality commercial category also contained cyclohexanecarboxylic acid; ethyl ester (6.6%), which is perceived as a fruity and cheesy wine smell [ 31 ]; and, in very similar proportions, copaene (6.5%), which has an earthy touch similar to boiled potato [ 32 ]. Styrene (5.3%) was also identified, presenting a sweet, balsamic and floral odour with a plastic touch [ 33 ], together with p -xylene (5.1%), which presents a sweet, aromatic odour [ 34 ], and 3-hexen-1-ol, acetate (3.9%), which has a fresh, sweet, green apple or herbaceous odour [ 35 ]. Although at a very low concentration, the compound octan-1-ol (1.7%) was specific to this sample from the extra quality olives and stood out for its fresh and citric aroma [ 36 ].…”
Section: Resultsmentioning
confidence: 99%