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Migration study of organotin compounds from food packaging by surface-enhanced Raman scattering.
Talanta. 2020 Dec 01; 220:121408.T

Abstract

The potential of surface-enhanced Raman scattering (SERS) has been investigated for the rapid analysis of two representative organotin compounds (OTCs): dibutyltin maleate (DTM) and tributyltin chloride (TBT), after migration tests from polyvinyl chloride (PVC), as a model food packaging material in aqueous food simulant (acetic acid 3% w/v). OTCs, often used as heat stabilizers additives for PVC, are classified as endocrine disrupting chemicals (EDCs) and their migration potential has to be controlled in compliance with the normative prescriptions for food contact materials. In this study, colloidal silver nanoparticles (AgNPs) were applied as liquid SERS substrate for direct-in-liquid analysis of food simulant after standardized migration tests of PVC samples spiked with OTCs. Promising results were obtained, reaching detection limits below the permitted limits for the considered OTCs (i.e. 0.15 mg/l): DTM and TBT were detected down to 0.01 mg/l and 0.08 mg/l, respectively. Calibration curves were calculated for standard solutions of DTM and TBT in the dynamic range between 0 and 1 mg/l (reduced χ2 = 0.8), and 0.5-5 mg/l (reduced χ2 = 0.2), respectively. Migrated TBT and DTM were detected in the food simulant, specifically identified and quantified by SERS, with a measurement uncertainty around 10% in all cases. In particular, it was found that TBT can migrate in higher amount compared to DTM when the PVC film is in contact with a slightly acidic matrix. These results were further confirmed by inductively coupled plasma-mass spectrometry and UV-Vis spectroscopy. In the present study, direct-in-liquid SERS approach showed to be very promising because it provides a fast response and it allows to overcome most of the common drawbacks of solid SERS substrates due to inhomogeneity problems and low repeatability.

Authors+Show Affiliations

Chemical Physics and Nanotechnology Department, National Institute of Metrological Research, Strada Delle Cacce 91, 10137, Turin, Italy. Electronic address: l.mandrile@inrim.it.Chemical Physics and Nanotechnology Department, National Institute of Metrological Research, Strada Delle Cacce 91, 10137, Turin, Italy; Chemistry Department, University of Turin, Via Giuria 7, Turin, Italy.Chemical Physics and Nanotechnology Department, National Institute of Metrological Research, Strada Delle Cacce 91, 10137, Turin, Italy.Department of Analytical Chemistry, Aragon Institute of Engineering Research I3A, EINA-University of Zaragoza, Torres Quevedo Building, María de Luna 3, 50018, Zaragoza, Spain.Chemical Physics and Nanotechnology Department, National Institute of Metrological Research, Strada Delle Cacce 91, 10137, Turin, Italy; Chemistry Department, University of Turin, Via Giuria 7, Turin, Italy.Chemical Physics and Nanotechnology Department, National Institute of Metrological Research, Strada Delle Cacce 91, 10137, Turin, Italy.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32928424

Citation

Mandrile, Luisa, et al. "Migration Study of Organotin Compounds From Food Packaging By Surface-enhanced Raman Scattering." Talanta, vol. 220, 2020, p. 121408.
Mandrile L, Vona M, Giovannozzi AM, et al. Migration study of organotin compounds from food packaging by surface-enhanced Raman scattering. Talanta. 2020;220:121408.
Mandrile, L., Vona, M., Giovannozzi, A. M., Salafranca, J., Martra, G., & Rossi, A. M. (2020). Migration study of organotin compounds from food packaging by surface-enhanced Raman scattering. Talanta, 220, 121408. https://doi.org/10.1016/j.talanta.2020.121408
Mandrile L, et al. Migration Study of Organotin Compounds From Food Packaging By Surface-enhanced Raman Scattering. Talanta. 2020 Dec 1;220:121408. PubMed PMID: 32928424.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Migration study of organotin compounds from food packaging by surface-enhanced Raman scattering. AU - Mandrile,Luisa, AU - Vona,Martina, AU - Giovannozzi,Andrea Mario, AU - Salafranca,Jesús, AU - Martra,Gianmario, AU - Rossi,Andrea Mario, Y1 - 2020/07/19/ PY - 2020/04/30/received PY - 2020/07/09/revised PY - 2020/07/11/accepted PY - 2020/9/15/entrez PY - 2020/9/16/pubmed PY - 2020/9/16/medline KW - Dibutyltin maleate KW - Food contact materials KW - Migration test KW - Organotin compounds KW - Surface-enhanced Raman scattering KW - Tributyltin SP - 121408 EP - 121408 JF - Talanta JO - Talanta VL - 220 N2 - The potential of surface-enhanced Raman scattering (SERS) has been investigated for the rapid analysis of two representative organotin compounds (OTCs): dibutyltin maleate (DTM) and tributyltin chloride (TBT), after migration tests from polyvinyl chloride (PVC), as a model food packaging material in aqueous food simulant (acetic acid 3% w/v). OTCs, often used as heat stabilizers additives for PVC, are classified as endocrine disrupting chemicals (EDCs) and their migration potential has to be controlled in compliance with the normative prescriptions for food contact materials. In this study, colloidal silver nanoparticles (AgNPs) were applied as liquid SERS substrate for direct-in-liquid analysis of food simulant after standardized migration tests of PVC samples spiked with OTCs. Promising results were obtained, reaching detection limits below the permitted limits for the considered OTCs (i.e. 0.15 mg/l): DTM and TBT were detected down to 0.01 mg/l and 0.08 mg/l, respectively. Calibration curves were calculated for standard solutions of DTM and TBT in the dynamic range between 0 and 1 mg/l (reduced χ2 = 0.8), and 0.5-5 mg/l (reduced χ2 = 0.2), respectively. Migrated TBT and DTM were detected in the food simulant, specifically identified and quantified by SERS, with a measurement uncertainty around 10% in all cases. In particular, it was found that TBT can migrate in higher amount compared to DTM when the PVC film is in contact with a slightly acidic matrix. These results were further confirmed by inductively coupled plasma-mass spectrometry and UV-Vis spectroscopy. In the present study, direct-in-liquid SERS approach showed to be very promising because it provides a fast response and it allows to overcome most of the common drawbacks of solid SERS substrates due to inhomogeneity problems and low repeatability. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/32928424/Migration_study_of_organotin_compounds_from_food_packaging_by_surface-enhanced_Raman_scattering L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(20)30699-8 DB - PRIME DP - Unbound Medicine ER -
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