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Microplastics and PMT plastic-associated chemicals as co-contaminants in ice shaving waste from an urban ice rink.
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Scientists testing ice shavings from a Toronto ice rink (the leftover snow from resurfacing machines) found surprisingly high levels of tiny plastic particles and plastic-related chemicals, likely coming from the rink's equipment and surfaces. This matters because that waste ice is often dumped into sewers or outdoors, meaning these contaminants could be leaking into our water systems and environment—and with nearly 8,000 rinks across Canada alone, this could add up to a much bigger pollution source than anyone realized.
Ice hockey, curling, and skating are popular recreational activities across Canada's nearly 8000 ice rinks, yet potential contamination of rink ice shaving waste remains understudied. This study investigated the presence of emerging contaminants, including microplastics and persistent, mobile, and toxic (PMT) plastic-associated chemicals as co-contaminants in ice shaving from the Mattamy Athletic Centre (formerly Maple Leaf Gardens) located in the City of Toronto. Microplastics were detected at high concentrations ranging from 59 to 2063 particles per 100 mL of melted ice shaving, with particle sizes between 11 and 494 µm (median 38 µm) in diameter. Among 124 screened PMT plastic-associated chemicals, significantly higher levels were detected in ice-shaving water than ice-making source water, implicating the ice rink infrastructure and/or skater equipment as sources of contamination. These findings represent the first documented evidence of microplastics and PMT chemicals in ice shavings from an ice rink. They are significant because ice-shaving waste is disposed of drainage to sanitary sewers and/or outdoor dumping, both of which are pathways for potential environmental contamination. Given the scale of ice rink operations nationwide, the results highlight a need for comprehensive multi-facility assessments, source identification, targeted contaminant monitoring, and improved waste-management practices, including accessible treatment technologies.
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What is in the snow pile? Microplastics and rink ice-shaving waste
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When ice rinks get resurfaced (think Zamboni machines), the shaved-off ice and snow piles up as waste — and this research found that pile is loaded with tiny plastic particles, likely worn off from the resurfacer's blades and the rink surface itself. Since that snow often just gets dumped outside or down the drain, it's another route for microplastics to leak into our soil and water, adding to the broader mix of plastic pollution scientists are still working to understand the health effects of.
What is in the snow pile? Microplastics and rink ice-shaving waste
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When ice rinks get resurfaced (think Zamboni machines), the shaved-off snow piles up as waste — and this research found that snow contains microplastics, tiny plastic particles likely worn off from skate blades, rink equipment, and the ice surface itself. This waste is usually just dumped or melted without a second thought, meaning those plastic bits can wash into waterways and soil, adding to the microplastic pollution that scientists are still studying for its effects on our health. It's a reminder that plastic pollution shows up in unexpected everyday places, not just obvious sources like bottles and bags.
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This survey and review of North American ice arena managers found that maintaining ice quality involves managing temperature, humidity, thickness, and water quality — but also notes that emerging contaminants including microplastics and PFAS ("forever chemicals") are present in arena ice and warrant monitoring. While the paper's primary focus is on optimizing ice conditions for athletic performance, the mention of microplastics as an environmental concern in indoor ice facilities is a notable finding. It highlights an overlooked exposure pathway for arena workers and athletes.
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Researchers assessed microplastic pollution in Vesijärvi lake and Pikku Vesijärvi pond in Finland during winter, detecting mean concentrations of 395.5 MPs/kg in sediment, 117.1 MPs/L in snow, and 7.8 MPs/L in ice samples, with FTIR imaging used for chemical identification.
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