Latimer Jennifer C, Van Halen David, Speer James, Krull Stephanie, Weaver Patricia, Pettit Joseph, Foxx Heather
J Environ Health. 2016 Oct;79(3):28-35.
Industrial emissions, deteriorating or improperly removed lead paint, and the use of lead additives in fuel have left a substantial burden of heavy metals, such as lead, in urban soils. Much of this lead remains near the surface where it has the potential to impact human health. Exposure to lead, especially in children, can have lasting impacts on neurological development and academic achievement. Urban gardening, in particular, is an activity that could result in increased exposure to soil lead for many unsuspecting gardeners. During the summer of 2012, more than 1,061 surface soil samples were collected from an approximately 1.25 acre urban community garden in Terre Haute, Indiana. Samples were collected to evaluate the spatial distribution of lead across the community garden on the plot level. The results highlight the variability that can be seen within small areas of a former residential property, for example lead concentrations that are low (<200 parts per million [ppm]) within the same 10 x 10 foot garden plot as concentrations that are considered high (>600 ppm). Based on the results of this work, several areas of concern were identified and the community garden was reconfigured to reduce potential lead exposure to gardeners and the local community.
工业排放、日益恶化或去除不当的含铅涂料以及燃料中铅添加剂的使用，使得城市土壤中留下了大量的重金属负担，比如铅。这些铅大多残留在土壤表层，有可能影响人体健康。接触铅，尤其是儿童接触铅，会对神经发育和学业成绩产生持久影响。特别是城市园艺活动，可能会让许多毫无防备的园艺者增加接触土壤中铅的机会。2012年夏天，从印第安纳州特雷霍特一个约1.25英亩的城市社区花园采集了1061多个表层土壤样本。采集样本是为了评估社区花园内铅在地块层面的空间分布情况。结果凸显了在一个以前的住宅用地小区域内可见的变异性，例如，在同一个10×10英尺的花园地块内，铅浓度可能低（<200百万分之一[ppm]），而在同一地块内也可能有被认为高的浓度（>600 ppm）。基于这项工作的结果，确定了几个令人担忧的区域，并对社区花园进行了重新规划，以减少园艺者和当地社区接触铅的潜在风险。
