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Bottle-fed babies are swallowing millions of microplastic particles a day, according to research described as a “milestone” in the understanding of human exposure to tiny plastics.

Scientists found that the recommended high-temperature (nhiệt độ cao) process for sterilising (khử trùng) plastic bottles (chai nhựa) and preparing formula milk (sữa công thức) caused bottles to shed (rơi, tung ra, tỏa ra) millions of microplastics and trillions of even smaller nanoplastics.

The polypropylene bottles tested make up 82% of the world market, with glass bottles being the main alternative. Polypropylene is one of the most commonly used plastics and preliminary tests by the scientists found kettles and food containers also produced millions of microplastics per litre of liquid.

Microplastics in the environment (vi nhựa trong môi trường) were already known to contaminate (làm ô nhiễm) human food and drink (thức ăn và đồ uống của con người), but the study shows that food preparation in plastic containers (chuẩn bị thức ăn trong đồ chứa bằng nhựa) can lead to exposure (phơi bày, phơi nhiễm) thousands of times higher (cao hơn hàng nghìn lần).

Bài trước: Thật đáng sợ