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Abstract Title:

Monitoring of bisphenol A and bisphenol S in thermal paper receipts from the Italian market and estimated transdermal human intake: A pilot study.

Abstract Source:

Sci Total Environ. 2017 Apr 29 ;599-600:68-75. Epub 2017 Apr 29. PMID: 28463702

Abstract Author(s):

Giacomo Russo, Francesco Barbato, Lucia Grumetto

Article Affiliation:

Giacomo Russo

Abstract:

Bisphenol A (BPA), a synthetic xenoestrogen widely used in various industrial fields, can be present, in its un-reacted form, as an additive in thermal paper. BPA is virtually ubiquitous in industrialized societies and humans are exposed to this chemical via dietary and non-dietary sources. Since in 2015 European Food Safety Authority (EFSA) indicated that thermal paper is the second source of BPA exposure after the food chain, some suppliers replaced BPA with its analogue Bisphenol S (BPS), speculatively supposed to be safer. In this work BPA and BPS concentration levels were determined in thermal paper receipts collected in Italy from 50 different sources by liquid chromatography coupled to tandem fluorescence and ultraviolet detection. BPA was found in 44 samples at mean concentration of 107.47μg/100mg of paper (from below Limits of Quantification (LOQ) to 1533.733μg/100mg of paper). BPS was found in 31 samples at mean concentration of 41.97μg/100mg of paper (from below the LOQ to 357.989μg/100mg of paper). 26 samples were positive to both BPA and BPS. The estimate daily intake (EDI)values of BPA and BPS occurring through dermal absorption were calculated for 70kg body weight individuals. For general population, they were 0.0625μg/day for BPA and 0.0244μg/day for BPS, based on the mean content of bisphenols found. For occupationally exposed individuals, they were 66.8μg/dayfor BPA and 15.6μg/day for BPS, based on the worst scenario. Such levels would produce a dermal intake below the Tolerable Day Intake established by EFSA (4μg/kg·bw/day); nevertheless, the occurrence of co-exposure to dietary and non-dietary sources should be considered in the health risk assessment, mainly for people frequently exposed to thermal paper contact for occupational reason.

Study Type : Human Study

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Sayer Ji
Founder of GreenMedInfo.com

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