Solid/liquid phase microextraction of five bisphenol-type endocrine disrupting chemicals by using a hollow fiber reinforced with graphene oxide nanoribbons, and determination by HPLC-PDA.
A novel solid/liquid phase microextraction (SLPME) technique was developed and applied to the simultaneous determination of five bisphenol-type endocrine disrupting chemicals (EDCs) including bisphenol A, bisphenol S, bisphenol F, bisphenol B and bisphenol AF. The method is based on the use of a graphene oxide nanoribbon-reinforced hollow fiber (GONRs-HF) and 1-octanol. GONRs were longitudinally unzipped from multiwalled carbon nanotubes (MWCNTs) by means of chemical oxidation and carefully characterized. GONRs were dispersed in ultrapure water with the assistance of surfactant and then immobilized into the wall pores of HF. Compared with CNTs, the hydrophilicity of GONRs was improved, and a uniform dispersion was formed. This simplifies the preparation process and reduces waste of materials. The pores and lumen of GONRs-HF were filled with 1-octanol, and then the whole assembly was used for the extraction of the analytes. In comparison with different extraction modes, GONRs-HF-SLPME exhibits a more effective extraction performance for five bisphenol-type EDCs. Response surface methodology was used to optimize experimental parameters affecting the extraction efficiency. The enrichment factors are in the range from 76 to 127 with good inter-fiber and batch-to-batch reproducibility. The method shows good linearity with determination coefficients (R2) higher than 0.9985. The limits of detection are in the range of 0.1-0.4 μg L-1. Recoveries from spiked real samples are between 83% and 114% with relative standard deviations between 1.6% and 7.8%. Graphical abstract Schematic presentation of the preparation of graphene oxide nanoribbons (GONRs) with multiwalled carbon nanotubes (MWCNTs), immobilization of GONRs into the pores of hollow fiber (HF), and application for solid/liquid phase microextraction (SLPME) of five bisphenol-type endocrine disrupting chemicals in three kinds of real samples.
['Han|Xiaofei|X|', 'Chen|Juan|J|', 'Qiu|Hongdeng|H|0000-0002-2702-9415', 'Shi|Yan-Ping|YP|']
D020003:1-Octanol D001515:Beer D001559:Benzhydryl Compounds D002253:Carbonated Beverages D002851:Chromatography, High Pressure Liquid D060766:Drinking Water D052244:Endocrine Disruptors D005506:Food Contamination D006108:Graphite D057230:Limit of Detection D037742:Nanotubes, Carbon D010636:Phenols D015203:Reproducibility of Results D052617:Solid Phase Microextraction D014874:Water Pollutants, Chemical
Response surface methodology Canned sample Carbon nanomaterials Plastic bottled sample Sample pretreatment