TY - JOUR

T1 - Extraction of polycyclic aromatic hydrocarbons from polyhydroxyalkanoates before gas chromatography/mass spectrometry analysis

AU - Cavaliere, Chiara

AU - Montone, Carmela Maria

AU - Capriotti, Anna Laura

AU - La Barbera, Giorgia

AU - Piovesana, Susy

AU - Rotatori, Mauro

AU - Valentino, Francesco

AU - Laganà, Aldo

N1 - (Ekstern)

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

KW - Biopolymers

KW - Florisil clean-up

KW - Gas chromatography/mass spectrometry

KW - Isotopic dilution

KW - Polycyclic aromatic hydrocarbons

KW - Polyhydroxyalkanoates

UR - http://www.scopus.com/inward/record.url?scp=85048814267&partnerID=8YFLogxK

U2 - 10.1016/j.talanta.2018.06.038

DO - 10.1016/j.talanta.2018.06.038

M3 - Journal article

C2 - 30029430

AN - SCOPUS:85048814267

VL - 188

SP - 671

EP - 675

JO - Talanta

JF - Talanta

SN - 0039-9140

ER -