Organophosphate esters (OPEs) used as flame retardants and plasticizers are additives in building and construction materials, decorations, furniture, electronic equipment, among other applications. The presence of materials containing these substances in construction and demolition waste (CDW) from weak waste management practices can result in environmental contamination. In this study, OPEs' presence in soil samples collected from a CDW landfill in Brazil was evaluated. Soil samples were collected in areas adjacent to CDW from an inert landfill, and the samples were analysed by gas chromatography coupled to mass spectrometry. The OPEs were detected in all soil samples at quantifiable concentrations ranging from 21 to 251 ng g-1, and detected compounds were tris(phenyl) phosphate, tris(2-butoxyethyl) phosphate, tris(1,3-dichloroisopropyl) phosphate, tris(2-chloroisopropyl) phosphate and 2-ethylhexyl diphenyl phosphate. The presence of these compounds in a CDW landfill is probably due to the lack of control of the materials sent to and deposited in the landfill, which, results in part from the lack of sampling and screening systems that can help identify the presence of contaminants in the CDW waste stream. This is partially due to OPEs not being considered controlled compounds under current regulations, thus screening or separation for handling of OPEs at construction and demolition work sites is rare to non-existent. The data generated in this study reveals the need for improving CDW management to minimize, if not eliminate, environmental contamination by OPEs.

中文翻译：

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惰性垃圾填埋场土壤中的有机磷酸酯：案例研究。

用作阻燃剂和增塑剂的有机磷酸酯 (OPE) 是建筑材料、装饰品、家具、电子设备等应用中的添加剂。由于废物管理实践薄弱，建筑和拆除废物 (CDW) 中含有这些物质的材料可能会导致环境污染。在这项研究中，评估了从巴西 CDW 垃圾填埋场收集的土壤样本中 OPE 的存在情况。从惰性垃圾填埋场收集 CDW 附近区域的土壤样品，并通过气相色谱法和质谱法对样品进行分析。所有土壤样品中均检测到 OPE，可定量浓度范围为 21 至 251 ng g-1，检测到的化合物为磷酸三（苯基）酯、磷酸三（2-丁氧基乙基）酯、磷酸三（1,3-二氯异丙基）酯、 (2-氯异丙基)磷酸酯和2-乙基己基二苯基磷酸酯。车辆碰撞垃圾填埋场中存在这些化合物可能是由于对送往和存放在垃圾填埋场的材料缺乏控制，部分原因是缺乏可以帮助识别垃圾填埋场中是否存在污染物的采样和筛查系统。车辆碰撞废物废物流。部分原因是根据现行法规，OPE 不被视为受控化合物，因此在建筑和拆除工地处理 OPE 的筛选或分离很少甚至不存在。本研究生成的数据表明，需要改进车辆碰撞废物管理，以最大限度地减少（如果不能消除）OPE 造成的环境污染。