Among the organic contaminants that could pass from waste to polyhydroxyalkanoates (PHAs), there are the polycyclic aromatic hydrocarbons (PAHs). For this reason, we have developed a rapid analytical method for the determination of sixteen PAHs in PHAs. PAHs were extracted by n-hexane, after matrix dispersion and crumbling into sand; the extract was purified by solid phase extraction using florisil as adsorbent. Recoveries in the range of 89–101% were obtained for the deuterated analytes, except for the two with the lowest molecular weight. Trueness between 92% and 108% and within-laboratory precision (expressed as relative standard deviation) ≤ 18% were estimated for all the analytes. Gas chromatography/mass spectrometry was used for analyte determination. Method limits of quantification were suitable to assure that PAH presence in PHA biolpolymers is much below the limits set by European law for plastic materials. Indeed, analysis of two different PHA samples showed that contamination is limited to few compounds at non-concerning levels.

Extraction of polycyclic aromatic hydrocarbons from polyhydroxyalkanoates before gas chromatography/mass spectrometry analysis / Cavaliere, Chiara; Montone, CARMELA MARIA; Capriotti, ANNA LAURA; La Barbera, G.; Piovesana, S.; Rotatori, M.; Valentino, F.; Lagana, A.. - In: TALANTA. - ISSN 0039-9140. - STAMPA. - 188:(2018), pp. 671-675. [10.1016/j.talanta.2018.06.038]

Extraction of polycyclic aromatic hydrocarbons from polyhydroxyalkanoates before gas chromatography/mass spectrometry analysis

CAVALIERE, CHIARA
;
MONTONE, CARMELA MARIA
;
CAPRIOTTI, ANNA LAURA
;
La Barbera G.
;
Piovesana S.
;
Rotatori M.
;
Valentino F.
;
Lagana A.
2018

Abstract

Among the organic contaminants that could pass from waste to polyhydroxyalkanoates (PHAs), there are the polycyclic aromatic hydrocarbons (PAHs). For this reason, we have developed a rapid analytical method for the determination of sixteen PAHs in PHAs. PAHs were extracted by n-hexane, after matrix dispersion and crumbling into sand; the extract was purified by solid phase extraction using florisil as adsorbent. Recoveries in the range of 89–101% were obtained for the deuterated analytes, except for the two with the lowest molecular weight. Trueness between 92% and 108% and within-laboratory precision (expressed as relative standard deviation) ≤ 18% were estimated for all the analytes. Gas chromatography/mass spectrometry was used for analyte determination. Method limits of quantification were suitable to assure that PAH presence in PHA biolpolymers is much below the limits set by European law for plastic materials. Indeed, analysis of two different PHA samples showed that contamination is limited to few compounds at non-concerning levels.
2018
biopolymers; florisil clean-up; gas chromatography/mass spectrometry; isotopic dilution; polycyclic aromatic hydrocarbons; polyhydroxyalkanoates
01 Pubblicazione su rivista::01a Articolo in rivista
Extraction of polycyclic aromatic hydrocarbons from polyhydroxyalkanoates before gas chromatography/mass spectrometry analysis / Cavaliere, Chiara; Montone, CARMELA MARIA; Capriotti, ANNA LAURA; La Barbera, G.; Piovesana, S.; Rotatori, M.; Valentino, F.; Lagana, A.. - In: TALANTA. - ISSN 0039-9140. - STAMPA. - 188:(2018), pp. 671-675. [10.1016/j.talanta.2018.06.038]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1136406
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