Hot water is key variable responsible for release of large numbers of plastic particles
Plastic infant feeding bottles can release up to 16 million pieces of microplastic during each use. Such bottles are routinely exposed to hot water and vigorous shaking when parents are making formula for babies, which sloughs off particles from the polypropylene. ‘I’m not surprised that we found microplastics released from infant feeding bottles,’ says environmental engineer Liwen Xiao at Trinity College Dublin, ‘but I am shocked at the levels of microplastic released.’