Comparative study of ink photoinitiators in food packages using gas chromatography with vacuum ultraviolet detection and gas chromatography with mass spectrometry
| Autor: | Karel Lemr, Kevin A. Schug, Changling Qiu, Jonathan Smuts, Radka Pechancová |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Vacuum Filtration and Separation Food Contamination 02 engineering and technology Mass spectrometry 01 natural sciences Gas Chromatography-Mass Spectrometry Analytical Chemistry chemistry.chemical_compound Benzophenones Benzophenone Detection limit Chromatography Photosensitizing Agents Inkwell 010401 analytical chemistry Food Packaging 021001 nanoscience & nanotechnology Mass spectrometric 0104 chemical sciences Food packaging Vacuum ultraviolet chemistry Ink Spectrophotometry Ultraviolet Gas chromatography 0210 nano-technology |
| Zdroj: | Journal of separation science. 42(2) |
| ISSN: | 1615-9314 |
| Popis: | This work focused on the development and validation of the analytical procedure using gas chromatography equipped with vacuum-ultraviolet detection for the specific and sensitive determination of nine photoinitiators in food packages. Subsequently, a comparison of the combination of vacuum ultraviolet spectroscopy with gas chromatography and a developed gas chromatography with mass spectrometry method was performed. The vacuum-ultraviolet spectra of all tested photoinitiators were collected and found to be highly distinct, even for isomers. Under the optimal conditions, the limits of detection for nine photoinitiators ranged from 1 to 5 mg/L using vacuum ultraviolet detection and from 0.15 to 0.5 mg/L using mass spectrometric detection. Both techniques were successfully applied for screening of photoinitiators in seven kinds of food packages and the obtained data showed good agreement (the relative difference was between 3 and 18%). The variability in concentrations found in triplicate samples was assessed to be below 18%. Predominantly benzophenone was found in all analysed samples in the range of 0.31-4.23 mg/kg. It appears to be preferably selected by food packaging manufacturers. This study proposes a new simple and sensitive technique used for analysis of photoinitiators that could be a good alternative to gas chromatography with mass spectrometry. |
| Databáze: | OpenAIRE |
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