Magnetic dispersive solid phase extraction based on carbonized cellulose-ferromagnetic nanocomposite for screening phthalate esters in aqueous samples

被引:16
作者
Aghdam, Mehri Bakhshizadeh [1 ]
Farajzadeh, Mir Ali [1 ,2 ]
Mogaddam, Mohammad Reza Afshar [3 ]
机构
[1] Univ Tabriz, Fac Chem, Dept Analyt Chem, Tabriz, Iran
[2] Near East Univ, Engn Fac, Mersin 10, TR-99138 Nicosia, North Cyprus, Turkey
[3] Tabriz Univ Med Sci, Food & Drug Safety Res Ctr, Tabriz, Iran
基金
美国国家科学基金会;
关键词
Magnetic dispersive solid phase extraction; Phthalate esters; Dispersive liquid-liquid microextraction; Aqueous samples; LIQUID-LIQUID MICROEXTRACTION; ACID-ESTERS; WATER; CHROMATOGRAPHY; PLASTICIZERS; SEPARATION; NANOTUBES; FRAMEWORK; SORBENTS; REMOVAL;
D O I
10.1016/j.chroma.2021.462756
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
In this work, a sorbent of the carbonized cellulose-ferromagnetic nanocomposite has been proposed for the magnetic dispersive solid phase extraction of some plasticizers in aqueous samples. Carbonized cellulose nanoparticles were prepared by treatment of cellulose filter paper with concentrated sulfuric acid and then loaded on Fe3O4 nanoparticles using coprecipitation. This sorbent is compatible with aqueous samples and can be considered as a viable sorbent for extraction of plasticizers from aqueous samples. In this study, magnetic dispersive solid phase extraction is followed by a dispersive liquid-liquid microextraction method. This combination makes the proposed approach as an efficient clean-up method with high enrichment factors for the selected analytes. The enriched analytes are monitored by gas chromatography equipped with a flame ionization detector. Parameters affecting the method efficiency were investigated in details. Under the optimized extraction conditions, limits of detection could reach up to of 0.15-0.50 mu g L-1. The satisfactory enrichment factors of 286-403 were obtained, and the extraction recoveries were found to be in the range of 57-80%. Relative standard deviations were in the range of 3-7% for intra-day and inter-day precisions for six replicate extractions at 25 mu g L-1 of each plasticizer. Calibration curves were linear in wide ranges with coefficients of determination >= 0.995. Eventually, efficiency of the prepared sorbent was confirmed by the extraction of some plasticizers from real samples including fruit juices, mineral water, injection solution, cola, and yoghourt drink packed in plastic containers. (C) 2021 Elsevier B.V. All rights reserved.
引用
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页数:10
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