2026-03-17 カナダ・ブリティッシュコロンビア大学（UBC）
Researchers examined the chemicals leaching from crumb rubber infill made from recycled tires. Photo credit: Lou Bosshart/UBC
＜関連情報＞
- https://news.ubc.ca/2026/03/ubc-study-links-artificial-turf-fields-to-lethal-chemical-threat-for-salmon/
- https://pubs.rsc.org/en/content/articlehtml/2026/em/d5em01016k
- https://tiisys.com/blog/2023/06/22/post-123290/
人工芝グラウンドは、雨水中の金属およびタイヤ由来の新たな汚染物質の繰り返し発生する発生源となっている Artificial Turf Fields Act as Recurring Point Sources of Metals and Emerging Tire-Derived Contaminants in Stormwater
Kate Julia Moloney , Timothy Rodgers and Rachel Scholes
Royal Society of Chemistry Published:12th March 2026
DOI:https://doi.org/10.1039/D5EM01016K
Abstract
Artificial turf fields are widely used globally. Each field contains an estimated 125 tonnes of infill material, which is often composed of ground post-consumer vehicle tires. Tires contain chemicals that are deleterious to human health and aquatic ecosystems, which may be mobilized from artificial turf fields. We conducted laboratory leaching experiments and analyzed stormwater from multiple artificial turf fields to quantify contaminant release. We found that crumb rubber infill released several toxicants including N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPD-Q), zinc, and copper, at higher levels than alternative infill materials. 6PPD-Q and 6PPD concentrations in infill leachates did not decrease with infill age. Non-targeted analysis identified fourteen compounds associated with crumb rubber infill material, including the putative identification of the bioaccumulative toxicant leucomalachite green. The maximum 6PPD-Q concentration in stormwater draining from an artificial turf field (130.2 ng L-1) was over three times higher than the LC50 for juvenile coho salmon (Oncorhynchus kisutch), which could increase concentrations to concerning levels in receiving water bodies. Zinc and copper concentrations peaked at 30.3 and 726.4 μg L-1, respectively. These concentrations are toxicologically relevant but lower than those typically observed in urban road runoff. Our results indicate that a typical crumb rubber-infilled field likely releases <1% of the total 6PPD in the infill material to stormwater each year, indicating persistent release beyond the field lifespan. Thus, artificial turf fields can act as recurring point sources of contaminants at ecologically significant levels.
