Carey A E, Gowen J A, Forehand T J, Tai H, Wiersma G B
Pestic Monit J. 1980;13(4):150-4.
Lead, mercury, cadmium, and arsenic levels were determined in soil samples from Des Moines, Iowa, Fitchburg, Massachusetts, Lake Charles, Louisiana, and Reading and Pittsburgh, Pennsylvania, as part of the 1972 Urban Soils Monitoring Program. Sampling sites within each Standard Metropolitan Statistical Area (SMSA) were defined as urban or suburban based on their position either within or outside the official city limits, respectively. In addition, each site was classified lawn or waste according to the maintenance it received. Except in Fitchburg, urban soils of each SMSA contained significantly higher mean concentrations of cadmium, lead, and mercury than did suburban soils. Mean urban soil concentrations in each SMSA except Des Moines and Reading, where urban levels were significantly higher. Generally, the metal concentrations in lawn and waste areas did not differ significantly. The results indicate a general contamination of these areas, probably as a result of fallout of airborne metal aerosols from industrial processes and/or fossil-fuel combustion.
作为1972年城市土壤监测项目的一部分，对来自爱荷华州得梅因、马萨诸塞州菲奇堡、路易斯安那州查尔斯湖以及宾夕法尼亚州雷丁和匹兹堡的土壤样本中的铅、汞、镉和砷含量进行了测定。每个标准大都市统计区（SMSA）内的采样点根据其分别位于官方城市界限之内或之外而被定义为城市或郊区。此外，每个采样点根据其接受的维护情况被分类为草坪或荒地。除了在菲奇堡，每个SMSA的城市土壤中镉、铅和汞的平均浓度显著高于郊区土壤。除了得梅因和雷丁（其城市土壤水平显著更高）之外，每个SMSA的城市土壤平均浓度。一般来说，草坪和荒地区域的金属浓度没有显著差异。结果表明这些区域普遍受到污染，这可能是工业过程和/或化石燃料燃烧产生的空气传播金属气溶胶沉降的结果。
