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首页> 外文期刊>International Journal of Soil, Sediment and Water >Characterization and Low-Cost Remediation of Soils Contaminated by Timbers in Community Gardens
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Characterization and Low-Cost Remediation of Soils Contaminated by Timbers in Community Gardens

机译：社区花园木材污染土壤的表征及低成本修复

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Urban community gardens worldwide provide significant health benefits to those gardening and consuming fresh produce from them. Urban gardens are most often placed in locations and on land in which soil contaminants reflect past practices and often contain elevated levels of metals and organic contaminants. Garden plot dividers made from either railroad ties or chromated copper arsenate (CCA) pressure treated lumber contribute to the soil contamination and provide a continuous source of contaminants. Elevated levels of polycyclic aromatic hydrocarbons (PAHs) derived from railroad ties and arsenic from CCA pressure treated lumber are present in the gardens studied. Using a representative garden, we 1) determined the nature and extent of urban community garden soil contaminated with PAHs and arsenic by garden timbers; 2) designed a remediation plan, based on our sampling results, with our community partner guided by public health criteria, local regulation, affordability, and replicability; 3) determined the safety and advisability of adding city compost to Boston community gardens as a soil amendment; and 4) made recommendations for community gardeners regarding healthful gardening practices. This is the first study of its kind that looks at contaminants other than lead in urban garden soil and that evaluates the effect on select soil contaminants of adding city compost to community garden soil.
机译：世界范围内的城市社区花园为那些从事园艺和消费新鲜农产品的人们带来了显着的健康益处。城市花园通常放置在土壤污染物反映过去做法的位置和土地上，并且通常含有较高水平的金属和有机污染物。用铁路枕木或铬酸砷酸铜（CCA）加压处理的木材制成的花园地块可造成土壤污染，并提供连续的污染源。在研究的花园中，铁路连接产生的多环芳烃（PAHs）含量升高，CCA加压处理后的木材中砷含量升高。我们使用一个有代表性的花园，1）确定被园林木材污染了多环芳烃和砷的城市社区花园土壤的性质和程度; 2）根据我们的抽样结果，在公共卫生标准，当地法规，可负担性和可复制性的指导下，与我们的社区合作伙伴一起设计补救计划; 3）确定了将城市堆肥添加到波士顿社区花园作为土壤改良剂的安全性和可取性; 4）就健康的园艺习惯向社区园丁提出建议。这是同类研究中的第一项研究，旨在研究城市园林土壤中铅以外的污染物，并评估将城市堆肥添加到社区园林土壤中对某些土壤污染物的影响。

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