Analytical and Bioanalytical Chemistry

, Volume 398, Issue 1, pp 571–576

Transfer of bisphenol A from thermal printer paper to the skin

Authors

  • Sandra Biedermann
    • Official Food Control Authority of the Canton of Zürich
  • Patrik Tschudin
    • Swiss Public Radio DRS
    • Official Food Control Authority of the Canton of Zürich
Technical Note

DOI: 10.1007/s00216-010-3936-9

Cite this article as:
Biedermann, S., Tschudin, P. & Grob, K. Anal Bioanal Chem (2010) 398: 571. doi:10.1007/s00216-010-3936-9

Abstract

Of 13 thermal printing papers analyzed, 11 contained 8–17 g/kg bisphenol A (BPA). When taking hold of a receipt consisting of thermal printing paper for 5 s, roughly 1 μg BPA (0.2–6 μg) was transferred to the forefinger and the middle finger if the skin was rather dry and about ten times more if these fingers were wet or very greasy. This amount transferred to dry skin was neither significantly increased when taking hold of the paper at up to 10 sites, nor reduced when BPA-free paper was contacted afterwards. After 60–90 min, BPA applied to the skin as a solution in ethanol was only partially or no longer at all extractable with ethanol, whereas BPA transferred to the skin by holding thermal printer paper remained largely extractable after 2 h. This suggests that penetration of the skin depends on the conditions. Extractability experiments did not enable us to conclude whether BPA passes through the skin, but indicated that it can enter the skin to such a depth that it can no longer be washed off. If this BPA ends up in the human metabolism, exposure of a person repeatedly touching thermal printer paper for 10 h/day, such as at a cash register, could reach 71 μg/day, which is 42 times less than the present tolerable daily intake (TDI). However, if more than just the finger pads contact the BPA-containing paper or a hand cream enhances permeability of the skin, this margin might be smaller.

https://static-content.springer.com/image/art%3A10.1007%2Fs00216-010-3936-9/MediaObjects/216_2010_3936_Figa_HTML.jpg
Figure

Thermal printer paper as used in numerous every-day-applications

Keywords

Thermal printer receiptSkin contactExposure to bisphenol ASkin permeability

Copyright information

© Springer-Verlag 2010