Investigation of diazo‐derivatization of bisphenol A and its applicability for quantitation in food safety inspections using high‐performance liquid chromatography

2018 ◽  
Vol 33 (3) ◽  
pp. e4419 ◽  
Author(s):  
Zhongrui Liu ◽  
Yangyang Li ◽  
Liwen Sun ◽  
Hong Yang ◽  
Xin Zheng ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Food Safety ◽  
Bisphenol A ◽  
High Performance ◽  
Safety Inspections

scholarly journals Investigation of eluted monomers from resin-based root canal sealer by high-performance liquid chromatography analysis

2016 ◽  
Vol 10 (01) ◽  
pp. 092-096 ◽  
Author(s):  
Huma Omurlu ◽  
Hacer Deniz Arisu ◽  
Evrim Eliguzeloglu Dalkilic ◽  
Ugur Tamer ◽  
Hilal Torul
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Bisphenol A ◽  
Root Canal ◽  
High Performance ◽  
Light Emitting Diode ◽  
Root Canal Sealer ◽  
Chromatography Analysis ◽  
Significant Difference ◽  
Time Periods

ABSTRACT Objective: The purpose of the current study was to determine the amount of urethane dimethacrylate (UDMA), bisphenol A-glycidyl methacrylate (Bis-GMA), poly (ethylene glycol) dimethacrylate (PEGDMA), bisphenol A ethoxylated dimethacrylate (Bis-EMA), and 2-hydroxyethyl methacrylate (HEMA) eluted from resin-based root canal sealer, epiphany, using high-performance liquid chromatography (HPLC). Materials and Methods: Epiphany was placed into the plastic molds and light-cured with a light emitting diode. After the curing process, each specimen in the first group (n = 12) was immersed in Eppendorf tubes containing a phosphate-buffered saline solution (PBS) and incubated for 45 s. In the second group, each specimen (n = 12) was immersed in Eppendorf tubes containing PBS and incubated for 24 h. Of the specimen extracts, 100 μL were subjected to HPLC. Analysis of data was accomplished with one-way analysis of variance (P < 0.05). Results: All of the samples eluted HEMA, UDMA, Bis-GMA, PEGDMA, and Bis-EMA. A significant difference was determined between the time periods of HEMA, UDMA, PEGDMA, and Bis-EMA (P < 0.05). Conclusion: The results of the current study showed that Epiphany releases HEMA, UDMA, Bis-GMA, PEGDMA, and Bis-EMA in both time periods.

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