Imperial College London
Dr Emrys Jones

DrEmrysJones

Faculty of Medicine, Department of Metabolism, Digestion and Reproduction

Honorary Research Associate
 
 
 
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Contact

 

emrys.jones

 
 
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Location

 

Sir Alexander Fleming BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Aznar:2016:10.1016/j.chroma.2016.05.032,
author = {Aznar, M and Alfaro, P and Nerín, C and Jones, E and Riches, E},
doi = {10.1016/j.chroma.2016.05.032},
journal = {J Chromatogr A},
pages = {124--133},
title = {Progress in mass spectrometry for the analysis of set-off phenomena in plastic food packaging materials.},
url = {http://dx.doi.org/10.1016/j.chroma.2016.05.032},
volume = {1453},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In most cases, food packaging materials contain inks whose components can migrate to food by diffusion through the material as well as by set-off phenomena. In this work, different mass spectrometry approaches had been used in order to identify and confirm the presence of ink components in ethanol (95%) and Tenax(®) as food simulants. Three different sets of materials, manufactured with different printing technologies and with different structures, were analyzed. Sample analysis by ultra performance liquid chromatography mass spectrometry (UPLC-MS), using a quadrupole-time of flight (Q-TOF) as a mass analyser proved to be an excellent tool for identification purposes while ion mobility mass spectrometry (IM-MS) shown to be very useful for the confirmation of the candidates proposed. The results showed the presence of different non-volatile ink components in migration such as colorants (Solvent Red 49), plasticizers (dimethyl sebacate, tributyl o-acetyl citrate) or surfactants (SchercodineM, triethylene glycol caprilate). An oxidation product of an ink additive (triphenyl phosphine oxide) was also detected. In addition, a surface analysis technique, desorption electrospray mass spectrometry (DESI-MS), was used for analyzing the distribution of some ink components (tributyl o-acetyl citrate Schercodine L, phthalates) in the material. The detection of some of these compounds in the back-printed side confirmed the transference of this compound from the non-food to the food contact side. The results also showed that concentration of ink migrants decreased when an aluminum or polypropylene layer covered the ink. When aluminum was used, concentration of most of ink migrants decreased, and for 5 out of the 9 even disappeared.
AU  - Aznar,M
AU  - Alfaro,P
AU  - Nerín,C
AU  - Jones,E
AU  - Riches,E
DO  - 10.1016/j.chroma.2016.05.032
EP  - 133
PY  - 2016///
SP  - 124
TI  - Progress in mass spectrometry for the analysis of set-off phenomena in plastic food packaging materials.
T2  - J Chromatogr A
UR  - http://dx.doi.org/10.1016/j.chroma.2016.05.032
UR  - https://www.ncbi.nlm.nih.gov/pubmed/27215462
VL  - 1453
ER  -
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