Soil-Water-Plant Exchanges, University of Liège, Gembloux Agro-Bio Tech, 2 Passage des Déportés, 5030, Gembloux, Belgium; Laboratory of Chemistry of Natural Molecules, University of Liège, Gembloux Agro-Bio Tech, 2 Passage des Déportés, 5030, Gembloux, Belgium.
Soil-Water-Plant Exchanges, University of Liège, Gembloux Agro-Bio Tech, 2 Passage des Déportés, 5030, Gembloux, Belgium.
Environ Pollut. 2021 Jun 1;278:116857. doi: 10.1016/j.envpol.2021.116857. Epub 2021 Mar 3.
Contaminated land burdens the economy of many countries and must be dealt with. Researchers have published thousands of documents studying and developing soil and sediment remediation treatments. Amongst the targeted pollutants are the polycyclic aromatic hydrocarbons (PAHs), described as a class of persistent organic compounds, potentially harmful to ecosystems and living organisms. The present paper reviews and discusses three scientific trends that are leading current PAH-contaminated soil/sediment remediation studies and management. First, the choice of compounds that are being studied and targeted in the scientific literature is discussed, and we suggest that the classical 16 US-EPA PAH compounds might no longer be sufficient to meet current environmental challenges. Second, we discuss the choice of experimental material in remediation studies. Using bibliometric measures, we show the lack of PAH remediation trials based on co-contaminated or aged-contaminated material. Finally, the systematic use of the recently validated bioavailability measurement protocol (ISO/TS 16751) in remediation trials is discussed, and we suggest it should be implemented as a tool to improve remediation processes and management strategies.
受污染土地给许多国家的经济带来负担，必须加以处理。研究人员已经发表了数千份研究和开发土壤和沉积物修复处理的文件。目标污染物包括多环芳烃（PAHs），被描述为一类持久性有机化合物，可能对生态系统和生物有潜在危害。本文综述和讨论了当前正在引领 PAH 污染土壤/沉积物修复研究和管理的三个科学趋势。首先，讨论了正在科学文献中研究和针对的化合物的选择，我们认为经典的 16 种美国环保署 PAH 化合物可能不再足以应对当前的环境挑战。其次，我们讨论了修复研究中实验材料的选择。使用文献计量学方法，我们表明缺乏基于共污染或老化污染材料的 PAH 修复试验。最后，讨论了最近经过验证的生物可利用性测量协议（ISO/TS 16751）在修复试验中的系统使用，并建议将其作为一种工具来改进修复过程和管理策略。
