Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan.
Division of Environmental Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan.
Sci Total Environ. 2022 Oct 10;842:156684. doi: 10.1016/j.scitotenv.2022.156684. Epub 2022 Jun 21.
Although the health effects of artificial turf fillings have been investigated in Europe and the United States, the actual situation in Japan is unclear. To address this issue, the concentrations of 46 polyaromatic hydrocarbons (PAHs) and related compounds in rubber infills were analyzed prior to their use in synthetic turf fields in Japan. Based on information obtained from the sample suppliers, the investigated samples were divided into five categories: discarded tires, industrial rubber, combinations of these products or unidentified components (mixture/unknown), synthetic rubber specifically manufactured for synthetic turf, and special-purpose thermoplastic elastomers (TPEs). The industrial rubber samples were mixtures of styrene butadiene rubber, natural rubber, and ethylene propylene diene rubber (EPDM). The synthetic rubber samples consisted only of EPDM. A few or none of the PAHs were detected in the synthetic rubber and TPE samples. However, in the discarded tire and industrial rubber samples, benzo[a]pyrene, cyclopenta[cd]pyrene, and 30 other compounds were detected. A comparison between these two categories indicated that the discarded tire samples exhibited higher concentrations of the target compounds than the industrial rubber samples. This finding can be attributed to the presence of EPDM in almost all of the industrial rubber samples, which were not present in the discarded tire samples. The maximum PAH concentrations obtained in the present study were equivalent to or lower than the previously reported PAH concentrations. The total concentrations of the eight PAHs included in the European Chemical Agency (ECHA) assessment of health risks were lower in the present study than those reported by the ECHA. Furthermore, elution testing was performed with four simulated biofluids (gastric and intestinal juices, saliva, and perspiration). The actual elution amounts of all compounds were less than the limits. This report provides basic data for the risk assessment of PAHs in rubber infills.
虽然人工草皮填充物的健康影响在欧洲和美国已经得到了研究，但日本的实际情况尚不清楚。为了解决这个问题，分析了日本合成草皮场地使用前的橡胶填充物中 46 种多环芳烃（PAHs）和相关化合物的浓度。根据从样品供应商处获得的信息，将调查样本分为五类：废弃轮胎、工业橡胶、这些产品的组合或未知成分（混合物/未知）、专门为合成草皮制造的合成橡胶以及特殊用途热塑性弹性体（TPE）。工业橡胶样品是苯乙烯丁二烯橡胶、天然橡胶和三元乙丙橡胶（EPDM）的混合物。合成橡胶样品仅由 EPDM 组成。在合成橡胶和 TPE 样品中几乎没有或没有检测到多环芳烃。然而，在废弃轮胎和工业橡胶样品中，检测到了苯并[a]芘、环戊[a]芘和其他 30 种化合物。这两类样品的比较表明，废弃轮胎样品中目标化合物的浓度高于工业橡胶样品。这一发现可以归因于几乎所有工业橡胶样品中都存在 EPDM，而废弃轮胎样品中则不存在 EPDM。本研究中获得的最大多环芳烃浓度与之前报道的多环芳烃浓度相当或更低。本研究中包括的八种多环芳烃的总浓度低于欧洲化学品管理局（ECHA）健康风险评估报告中的浓度。此外，还使用四种模拟生物流体（胃液和肠液、唾液和汗液）进行了洗脱测试。所有化合物的实际洗脱量均低于限值。本报告为橡胶填充物中多环芳烃的风险评估提供了基础数据。
