Departamento de Quimica Analitica, Nutricion y Bromatologia, Facultad de Quimica, Universidad de Santiago de Compostela, Santiago de Compostela 15782, Spain.
Chemosphere. 2013 Jan;90(2):423-31. doi: 10.1016/j.chemosphere.2012.07.053. Epub 2012 Aug 22.
In this study, the presence of hazardous organic chemicals in surfaces containing recycled rubber tires is investigated. Direct material analyses using solvent extraction, as well as SPME analysis of the vapour phase above the sample, were carried out. Twenty-one rubber mulch samples were collected from nine different playgrounds. In addition, seven commercial samples of recycled rubber pavers were acquired in a local store of a multinational company. All samples were extracted by ultrasound energy, followed by analysis of the extract by GC-MS. The analysis confirmed the presence of a large number of hazardous substances including PAHs, phthalates, antioxidants (e.g. BHT, phenols), benzothiazole and derivatives, among other chemicals. The study evidences the high content of toxic chemicals in these recycled materials. The concentration of PAHs in the commercial pavers was extremely high, reaching values up to 1%. In addition, SPME studies of the vapour phase above the samples confirm the volatilisation of many of those organic compounds. Uses of recycled rubber tires, especially those targeting play areas and other facilities for children, should be a matter of regulatory concern.
本研究调查了含有再生橡胶轮胎的表面中危险有机化学物质的存在情况。使用溶剂萃取进行直接材料分析，并对样品上方的气相进行 SPME 分析。从九个不同的游乐场收集了 21 个橡胶覆盖物样本。此外，在一家跨国公司的当地商店购买了 7 个商用再生橡胶铺路石样本。所有样本均通过超声能量提取，然后通过 GC-MS 对提取物进行分析。分析证实存在大量有害物质，包括多环芳烃、邻苯二甲酸酯、抗氧化剂（如 BHT、酚类）、苯并噻唑和衍生物等化学物质。该研究证明了这些再生材料中含有高浓度的有毒化学物质。商用铺路石中的多环芳烃浓度极高，达到 1%。此外，对样品上方气相的 SPME 研究证实了许多有机化合物的挥发。再生橡胶轮胎的使用，尤其是针对游乐区和其他儿童设施的使用，应成为监管关注的问题。
