Decanoic acid reverse micelle-based coacervates for the microextraction of bisphenol A from canned vegetables and fruits

Uniform spherical- and rod-shaped TiO2 nanoparticles of anatase phase were prepared using decanoic acid at 300°C by reverse micelle method. The nanoparticles were characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray diffractometry (XRD) and FT-Raman spectroscope. The content of decanoic acid and operating temperature were noted as crucial parameters, controlling the shape, size and phase of TiO2 nanoparticles. RMS roughness (1.62 nm), measured by atomic force microscope (AFM), confirmed its superiority over other methods. The DCB photodegradation reaction rate constant (first order) TiO2 nanoparticles was found superior to that of commercial TiO2, Degussa P-25.

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Validation of an immunoassay for fast screening of bisphenol A in canned vegetables

Analytical Methods ◽

10.1039/c3ay40855h ◽

2013 ◽

Vol 5 (16) ◽

pp. 4244 ◽

Cited By ~ 5

Author(s):

Juan J. Manclús ◽

María J. Moreno ◽

Ángel Montoya

Keyword(s):

Bisphenol A ◽

Fast Screening ◽

Canned Vegetables

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HPLC with Fluorescence Detection for Determination of Bisphenol A in Canned Vegetables: Optimization, Validation and Application to Samples from Portuguese and Spanish Markets

Coatings ◽

10.3390/coatings10070624 ◽

2020 ◽

Vol 10 (7) ◽

pp. 624

Author(s):

Fernanda Vilarinho ◽

Antia Lestido-Cardama ◽

Raquel Sendón ◽

Ana Rodríguez Bernaldo de Quirós ◽

Maria de Fátima Vaz ◽

...

Keyword(s):

Liquid Chromatography ◽

Bisphenol A ◽

Fluorescence Detection ◽

High Performance ◽

Limit Of Detection ◽

Attenuated Total Reflectance ◽

Limit Of Quantification ◽

Canned Vegetables ◽

Different Levels

Bisphenol A (BPA) is one of the chemicals used to produce both polycarbonate plastics and epoxy resin coatings. Research has shown that small amounts of BPA can migrate into the foods and beverages enclosed in these types of containers. In this research, an analytical method based on high-performance liquid chromatography with fluorescence detection (HPLC-FLD) was developed and validated for the determination of BPA in canned vegetables. The results were confirmed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) was performed, to identify the coating material of each tin can. Nineteen cans of vegetables were taken as study samples (eleven samples from the Spanish market, and eight samples from the Portuguese market). Excellent linear correlation (r2 = 0.9999) was observed over the range of 0.01 to 0.25 mg/L. Limit of detection (LOD) and limit of quantification (LOQ) values were calculated to be 0.005 mg/kg and 0.01 mg/kg, respectively. Good recoveries, between 72% and 90% were obtained at three different levels of concentration (RSD% = 4.6). BPA was not detected in the samples. The proposed HPLC-FLD was found to be suitable for the determination of BPA in canned vegetables.

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