Trend and concentrations of legacy lead (Pb) in highway runoff
Trend and concentrations of legacy lead (Pb) in highway runoff
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DOI：
10.1016/j.envpol.2011.09.009
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发表时间：
2012-01-01
影响因子：
8.9
通讯作者：
Kayhanian, Masoud
中科院分区：
文献类型：
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作者：
Kayhanian, Masoud
这项研究分别对32个和23个公路站点的公路径流和污染土壤中的铅(Pb)浓度进行了研究。高速公路沿线土壤表层(0~15 cm)的铅浓度普遍高于亚表层(15~60 cm)。土壤中铅的沉积可能是人为的，表层土壤中铅浓度与城市道路径流之间存在很强的相关性。20世纪80年代，世界各地高速公路径流中铅的浓度比90年代中期和21世纪头10年的测量值高出11倍。目前沉积在高速公路附近土壤中的铅似乎是油漆、轮胎重量平衡和旧含铅汽油燃烧的混合物。总体而言，逐步淘汰铅的规定减少了环境中的铅沉积，从而降低了进入受纳水域的铅负荷。(C)2011爱思唯尔有限公司。保留所有权利。
This study presents the results of lead (Pb) concentrations from both highway runoff and contaminated soil along 32 and 23 highway sites, respectively. In general, the Pb concentration on topsoil (0-15 cm) along highways was much higher than the Pb concentration in subsurface soil (15-60 cm). The Pb deposited on soil appears to be anthropogenic and a strong correlation was found between the Pb concentration in surface soil and highway runoff in urban areas. The concentration of Pb measured during 1980s from highways runoff throughout the world was up to 11 times higher than the measured values in mid 1990s and 2000s. The current Pb deposited on soil near highways appears to be a mixture of paint, tire weight balance and old leaded gasoline combustion. Overall, the Pb phase-out regulation reduced the Pb deposits in the environment and consequently lowered Pb loading into receiving waters. (C) 2011 Elsevier Ltd. All rights reserved.