[1]李贺,石峻青,沈刚,等.高速公路雨水径流重金属出流特性[J].东南大学学报(自然科学版),2009,39(2):345-349.[doi:10.3969/j.issn.1001-0505.2009.02.029]
 Li He,Shi Junqing,Shen Gang,et al.Characteristics of rainfall runoff discharge rule caused by heavy metals on express highway[J].Journal of Southeast University (Natural Science Edition),2009,39(2):345-349.[doi:10.3969/j.issn.1001-0505.2009.02.029]
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高速公路雨水径流重金属出流特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第2期
页码:
345-349
栏目:
环境科学与工程
出版日期:
2009-03-20

文章信息/Info

Title:
Characteristics of rainfall runoff discharge rule caused by heavy metals on express highway
作者:
李贺1 石峻青1 沈刚2 季晓亮2 傅大放1
1 东南大学市政工程系, 南京 210096; 2 江苏省长江公路大桥建设指挥部, 南京 210004
Author(s):
Li He1 Shi Junqing1 Shen Gang2 Ji Xiaoliang2 Fu Dafang1
1 Department of Municipal Engineering, Southeast University, Nanjing 210096, China
2 Jiangsu Yangtze River Highway Bridge Construction Headquarters, Nanjing 210004, China
关键词:
路面径流 重金属 出流特性 事件平均浓度
Keywords:
road runoff heavy metals discharge characteristics event mean concentrations
分类号:
X522
DOI:
10.3969/j.issn.1001-0505.2009.02.029
摘要:
对南京机场高速公路路面径流中Cd,Pb,Cu和Zn四种重金属进行了24次现场取样检测的基础上,重点探讨了重金属污染的出流特性与事件平均浓度(EMC).结果表明不同类型降雨事件重金属污染出流特性不同:降雨历时短、降雨量小、降雨强度小的降雨事件重金属浓度在一定范围内波动,在整个径流过程中始终维持在较高水平; 降雨历时长、降雨量大、前期强度大的单峰、多峰降雨事件初期污染物浓度高、污染重,初期效应显著; 降雨历时短、降雨量较大具有双峰雨型的降雨事件中重金属出流存在“二次冲刷”现象.Cd,Pb,Cu和Zn的EMC变化范围较大,分别为0.09~2.18,6.4~120.6 μg/L和0.024~0.197,0.1~1.03 mg/L.Pb总体污染程度较严重.与国外同类研究相比,本研究Pb和Cd污染程度较低,Cu和Zn则较为接近.
Abstract:
Heavy metal concentrations of Cd, Pb, Cu and Zn were monitored during 24 rainfall runoff events occurred on a representative express highway in Nanjing. Discharge rule of metal pollution and event mean concentrations(EMC)were evaluated. The results show that the discharge characteristics are different in different type of rainfall events. The metal concentrations fluctuate in a certain range of comparatively high levels during the events with short duration, light rainfall and low intensity. In the events with long duration, heavy rainfall, initial high intensity with single intensity peak or multi-peaks, the initial metal concentrations are high exhibiting a pronounced first flush. Second flush effect exists in the events with short duration, medium rainfall and double intensity peaks. The ranges of EMCs of Cd, Pb, Cu and Zn are 0.09-2.18,6.4-120.6 μg/L and 0.024-0.197,0.1-1.03 mg/L, respectively. EMCs show that the pollution extent of Pb is serious. Pollution of Cu and Zn are similar to related foreign studies, but Cd and Pb are lower.

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备注/Memo

备注/Memo:
作者简介: 李贺(1978—),男,博士,讲师,ericlihe@seu.edu.cn.
基金项目: 江苏省交通科技重大计划资助项目(TZ0761-010).
引文格式: 李贺,石峻青,沈刚,等.高速公路雨水径流重金属出流特性[J].东南大学学报:自然科学版,2009,39(2):345-349.
更新日期/Last Update: 2009-03-20