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Toxic substances in glass and in the decoration of bottles for alcoholic beverages



  Bar Bottles
Credit: CC0 Public Domain

Bottles of beer, wine and spirits contain potentially harmful levels of toxic elements such as lead and cadmium in their enameled decorations, a new study shows.

Researchers at the University of Plymouth analyzed both the glass and enamelled decorations of a variety of clear and colored bottles available in stores and supermarkets.

They showed that cadmium, lead and chromium were all present in the glass, but at concentrations where their environmental and health risks were considered low.

However, with cadmium concentrations of up to 20,000 ppm in the decorated regions, enameling was more important on various spirits, beers, and beverages. Wine bottles and lead concentrations up to 80,000 ppm in the decor of various wine bottles. The limit for lead in consumer colors is 90 ppm.

The study also showed that the elements can leach out of enameled glass fragments. In a standard test simulating rainfall at a landfill, several fragments above the US model were toxins in packaging legislation and could be defined as "dangerous."

Published in Environmental Science and Technology The research was conducted by Associate Professor (Reader) in Aquatic Geochemistry and Pollution Science, Dr. Ing. Andrew performed Turner.

He has previously shown that the paint or enamel on a variety of items ̵

1; including playground equipment, used toys and drinking glasses – may possibly contain harmful toxins.

Dr. Turner said, "It has always been a surprise that the products we use every day contain so many toxic elements, which is just another example and further evidence that harmful elements are used unnecessarily when alternatives are available The additional potential of these substances to separate out into other objects during the waste and recycling process is an obvious and additional cause for concern. "

For the current research, bottles of beer, wine and spirits were purchased at local and national retail outlets between September They were either clear, frosted, green, UV-absorbing green (UVAG), or brown, some of which were enameled over part of the outer surface with images, patterns, and so on.

Logos, texts and / or barcodes of one or more colors.

From the glass of 89 bottles and fragments analyzed by X-ray fluorescence spectrometry (RFA), 76 p were positive for low lead and 55 positive for cadmium. Chromium was detected in all green and UVAG bottles, but only in 40% of brown glass and never in clear glass.

Meanwhile, the enamels of 12 out of 24 enamelled products tested were based, in whole or in part, on compounds of either lead or cadmium, or both.

Dr. Turner added, "Governments around the world have made clear laws to restrict the use of pollutants in everyday consumer goods, but when we approached suppliers, many of them said the bottles they used were different This presents the glass industry and glass recycling with obvious challenges and may need to be included in future legislation in this area. "


High concentrations of carcinogenic chemicals in everyday consumer goods


Further information:
Andrew Turner, Heavy Metal in Glass and Enamel of Consumer Container Bottles, Environmental Science & Technology (2019). DOI: 10.1021 / acs.est.9b01726

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University of Plymouth




Quote :
Toxins in the glass and in the decoration of bottles of alcoholic beverages (2019, 28 June)
retrieved on June 28, 2019
from https://phys.org/news/2019-06-toxic-substances-glass-alcoholic-beverage.html

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