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Paper money worldwide contains bisphenol A

Date:
August 11, 2011
Source:
American Chemical Society
Summary:
The cash register receipts that people place near paper money in billfolds and pockets has led to a worldwide contamination of paper money with bisphenol A (BPA) -- a potentially toxic substance. The amounts of BPA on currencies are higher than in dust, but human intake from currency is at least 10 times less than that from house dust, according to a new study.

Paper money worldwide contains traces of bisphenol A, which appears to come from contact with cash register receipts.
Credit: ACS

The cash register receipts that people place near paper money in billfolds, purses, and pockets has led to a worldwide contamination of paper money with bisphenol A (BPA) -- a potentially toxic substance found in some plastics, thermal paper and other products. The amounts of BPA on dollars, Euros, rubles, yuans, and other currencies, are higher than in house dust, but human intake from currency is at least 10 times less than those from house dust.

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That's the conclusion of a new study in the ACS' journal Environmental Science & Technology.

Kurunthachalam Kannan and Chunyang Liao point out that manufacturers use BPA to make polycarbonate plastics used in some consumer products, including water bottles, sports equipment, and household electronics. Studies indicate that BPA acts as an endocrine disruptor -- meaning it mimics the action of the sex hormone estrogen. Exposure to BPA has been linked to a variety of health problems. Although a recent study found traces of BPA in U.S. currency, nobody knew until now about BPA in paper money worldwide.

The scientists' analysis of 156 pieces of paper money from 21 countries found that all contained traces of BPA. The report notes, however, that "estimated daily intake from paper currencies were 10-fold lower than those reported from exposures due to [indoor] dust ingestion in the United States."

The highest BPA levels were in paper money from Brazil, the Czech Republic and Australia (polymer not paper), while the lowest occurred in paper money from the Philippines, Thailand, and Vietnam. Levels in U.S. notes were about average.

Kannan and Liao also found that the most likely source of the BPA in the currency is the thermal paper used in cash register receipts. They showed that receipts can transfer BPA onto cash when placed next to it or when a receipt is touched before handling currency. "Although high levels of BPA were measured in paper currencies, human exposure through dermal [skin] absorption appears to be minor," the article notes.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Chunyang Liao, Kurunthachalam Kannan. High Levels of Bisphenol A in Paper Currencies from Several Countries, and Implications for Dermal Exposure. Environmental Science & Technology, 2011; 110721145443079 DOI: 10.1021/es200977t

Cite This Page:

American Chemical Society. "Paper money worldwide contains bisphenol A." ScienceDaily. ScienceDaily, 11 August 2011. <www.sciencedaily.com/releases/2011/08/110810093800.htm>.
American Chemical Society. (2011, August 11). Paper money worldwide contains bisphenol A. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2011/08/110810093800.htm
American Chemical Society. "Paper money worldwide contains bisphenol A." ScienceDaily. www.sciencedaily.com/releases/2011/08/110810093800.htm (accessed October 31, 2014).

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