Dispersive liquid–liquid microextraction for the simultaneous determination of parent and nitrated polycyclic aromatic hydrocarbons in water samples

• Autorzy: Borges B. , Melo A. , Ferreira I. , Mansilha C.

Identyfikatory

DOI

10.1556/1326.2017.00126

• Języki publikacji: EN

Abstrakty

EN

A new method for simultaneous extraction and quantification of 6 nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) and 16 parent polycyclic aromatic hydrocarbons (PAHs) in water matrices was optimized and validated. The extraction procedure was based on dispersive liquid-liquid microextraction technique, followed by gas chromatography-mass detection. The optimum conditions of extraction (volume of the extraction solvent, dispersive solvents and amount of salt) were selected using central composite design. The best results were found by using 200 μL of acetonitrile as dispersive solvent, 60 μL of chloroform as extraction solvent, and 10% (w/v) NaCl. Excellent linearity was observed in the range of 10–150 ng L−1 with correlation coefficients (r2) ranging between 0.9996 and 0.9999 for nitro-PAHs and in the range of 5–150 ng L−1 with r2 ranging from 0.9998 to 1.000 for PAHs. The limits of detection for the nitro-PAHs studied ranged from 0.82 to 3.37 ng L−1, whereas for PAHs ranged from 0.62 to 3.48 ng L−1. The intra- and inter-day precisions for nitro-PAHs were in the range of 0.45 to 19.54% and 0.43 to 19.62%, respectively, and for PAHs ranged between 0.45 to 17.42% and 0.38 to 18.97%, respectively. The proposed method was successfully applied in analyses of groundwater, sea, rain water and river water, being appropriate for routine analyses.

Słowa kluczowe

EN

Nitro-polycyclic aromatic hydrocarbons; dispersive liquid-liquid microextraction; DLLME; GC–MS; experimental design; routine analyses

• Wydawca: University of Silesia in Katowice ; Akademiai Kiado
• Czasopismo: Acta Chromatographica
• Rocznik: 2018
• Tom: Vol. 30, no. 2
• Strony: 119--126
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Borges B.

• LAQV/REQUIMTE, Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Portugal

autor

Melo A.

• LAQV/REQUIMTE, Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Portugal
• Departamento de Saúde Ambiental, Instituto Nacional de Saúde Doutor Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal

autor

Ferreira I.

• LAQV/REQUIMTE, Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Portugal

autor

Mansilha C.

• Departamento de Saúde Ambiental, Instituto Nacional de Saúde Doutor Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
• LAQV/REQUIMTE, Universidade do Porto, Porto, Portugal

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).