QuEChERS extraction is a widely used method for the multi-residue analysis of micropollutants in food matrices. Due to the complexity of these matrices, QuEChERS methods usually require a clean-up stage of the extract, which in most cases uses the dispersive solid-phase extraction (d-SPE) technique, exploiting various types of materials (e.g., styrene-divinylbenzene and graphitized carbon black), characterized by significant costs. For this reason, a recycled carbonaceous material derived from the pyrolysis of sewage sludge (BC) was developed as a green alternative to commercial d–SPE adsorbent and applied to the clean-up procedure of high-pigmented edible crop extracts (i.e., rocket, tomato, and strawberry) for the determination of a wide variety of contaminants of emerging concern (CECs), such as pharmaceuticals, sunscreen agents, and PFASs listed in recent European decisions. The use of 50 mg of BC proved to be reliable and costeffective for the d–SPE clean-up of 23 analytes belonging to the aforementioned classes, being capable of reducing the matrix effect to less than |27%|. Although there were some limitations in recovering a group of CECs, BC allowed for achieving pseudo-quantitative recoveries and insignificant matrix effects for 8 pharmaceuticals, 1 sunscreen agent, and all 8 perfluoroalkyl substances studied. Furthermore, combining 5 mg or 10 mg of BC with 20 mg of styrene-divinylbenzene clean-up performances were improved, achieving quantitative recoveries for most CECs with matrix effects < |29%| (see Figure 1). The proposed analytical methodology was applied to the analysis of impacted crop samples, providing method sensitivities comparable to or lower than the limits proposed by the European community
Sewage sludge biochar as green d–SPE adsorbent in QuEChERS clean-up process for the multi-residue LC-MS/MS analysis of emerging micropollutants in edible crops / Lapo Renai, Giulia Bonaccorso, Michelangelo Fichera, Massimo Del Bubba. - ELETTRONICO. - (2024), pp. 205-205. (Intervento presentato al convegno XXVIII National Congress of the Italian Chemistry Society).
Sewage sludge biochar as green d–SPE adsorbent in QuEChERS clean-up process for the multi-residue LC-MS/MS analysis of emerging micropollutants in edible crops
Lapo Renai;Giulia Bonaccorso;Michelangelo Fichera;Massimo Del Bubba
2024
Abstract
QuEChERS extraction is a widely used method for the multi-residue analysis of micropollutants in food matrices. Due to the complexity of these matrices, QuEChERS methods usually require a clean-up stage of the extract, which in most cases uses the dispersive solid-phase extraction (d-SPE) technique, exploiting various types of materials (e.g., styrene-divinylbenzene and graphitized carbon black), characterized by significant costs. For this reason, a recycled carbonaceous material derived from the pyrolysis of sewage sludge (BC) was developed as a green alternative to commercial d–SPE adsorbent and applied to the clean-up procedure of high-pigmented edible crop extracts (i.e., rocket, tomato, and strawberry) for the determination of a wide variety of contaminants of emerging concern (CECs), such as pharmaceuticals, sunscreen agents, and PFASs listed in recent European decisions. The use of 50 mg of BC proved to be reliable and costeffective for the d–SPE clean-up of 23 analytes belonging to the aforementioned classes, being capable of reducing the matrix effect to less than |27%|. Although there were some limitations in recovering a group of CECs, BC allowed for achieving pseudo-quantitative recoveries and insignificant matrix effects for 8 pharmaceuticals, 1 sunscreen agent, and all 8 perfluoroalkyl substances studied. Furthermore, combining 5 mg or 10 mg of BC with 20 mg of styrene-divinylbenzene clean-up performances were improved, achieving quantitative recoveries for most CECs with matrix effects < |29%| (see Figure 1). The proposed analytical methodology was applied to the analysis of impacted crop samples, providing method sensitivities comparable to or lower than the limits proposed by the European communityFile | Dimensione | Formato | |
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