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首页> 外文期刊>Journal of Residuals Science & Technology >Polycyclic Aromatic Hydrocarbons and Phenolics in Ferrous and Non-Ferrous Waste Foundry Sands
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Polycyclic Aromatic Hydrocarbons and Phenolics in Ferrous and Non-Ferrous Waste Foundry Sands

机译：黑色和有色废物铸造砂中的多环芳烃和酚类

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摘要

A total of 43 sets of waste sand were collected from ferrous and non-ferrous foundries in the eastern United States. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) and 17 phenolics were determined by gas chromatography-mass spectrometry after accelerated solvent extraction. Since there is interest in beneficially using waste foundry sands (WFSs) in geotechnical applications and as an aggregate in manufactured soils, it is essential that PAHs and phenolics be monitored to ensure environmental protection. Anthracene, fluorene, naphthalene and phenanthrene were the most prevalent PAHs, as they were detected in >79%oftheWFSs. In general, naphthalene was found at the highest concentrations, ranging from 0.12 to as high as 48 mg kg"1. Based on Wisconsin's beneficial use regulations, 9 of 43 WFSs would not meet Category 1 criteria, due to high levels of phenanthrene. For the phenolics, phenol was generally found at the highest concentration, followed by 2-methylphenol and then 3-and 4-methylphenol and 2,4-dimethylphenol. Phenol was present in 91 % of the WFSs at concentrations ranging from 0.12 to 186 mg kg~1. Information from this study will help states in developing or reviewing regulatory structures that will ensure environmental protection and encourage the beneficial use of WFSs.
机译：从美国东部的黑色金属和有色金属铸造厂收集了总共43套废砂。加速溶剂萃取后，通过气相色谱-质谱法测定16种多环芳烃（PAHs）和17种酚的浓度。由于人们有兴趣在岩土工程应用中有益地使用铸造废砂（WFS），并将其作为人造土壤中的骨料使用，因此必须对PAH和酚类进行监测以确保环境保护。蒽，芴，萘和菲是最普遍的多环芳烃，因为在> 79％的WFS中被检测到。通常，萘的最高浓度范围为0.12至48 mg kg“ 1。根据威斯康星州的有益使用规定，由于菲的含量很高，在43种WFS中有9种不符合1类标准。在酚类中，通常发现苯酚的浓度最高，其次是2-甲基苯酚，然后是3-和4-甲基苯酚和2,4-二甲基苯酚，WFS中有91％的苯酚存在，浓度范围为0.12至186 mg kg 〜1。这项研究提供的信息将帮助各州制定或审查监管结构，以确保环境保护并鼓励WFS的有益使用。

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