[1]解建光,李贺,石俊青.路面雨水径流重金属赋存状态研究[J].东南大学学报(自然科学版),2010,40(5):1019-1024.[doi:10.3969/j.issn.1001-0505.2010.05.026]
 Xie Jianguang,Li He,Shi Junqing.Partitioning of heavy metals in expressway stormwater runoff[J].Journal of Southeast University (Natural Science Edition),2010,40(5):1019-1024.[doi:10.3969/j.issn.1001-0505.2010.05.026]
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路面雨水径流重金属赋存状态研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第5期
页码:
1019-1024
栏目:
环境科学与工程
出版日期:
2010-09-20

文章信息/Info

Title:
Partitioning of heavy metals in expressway stormwater runoff
作者:
解建光1 李贺2 石俊青2
1 南京航空航天大学土木工程系,南京 210016; 2 东南大学土木工程学院,南京 210096
Author(s):
Xie Jianguang1 Li He2 Shi Junqing2
1 Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 School of Civil Engineering, Southeast University, Nanjing 210096, China).
关键词:
路面径流 赋存状态 重金属
Keywords:
road runoff partitioning fraction heavy metals
分类号:
X522
DOI:
10.3969/j.issn.1001-0505.2010.05.026
摘要:
在对南京机场高速公路路面径流Cu,Zn,Cd和Pb 4种重金属进行监测的基础上,分析了溶解态和颗粒态重金属随径流变化及污染程度,重点探讨了赋存比例.结果表明:产流时间长的小雨事件中,溶解态浓度在径流初期达到最大,此后逐渐降低,颗粒态重金属浓度波动明显; 产流时间较短的中雨事件中,溶解态浓度在降雨前期波动明显,此后逐渐降低趋于平稳,颗粒态浓度随径流冲刷逐渐降低; 产流时间短的大雨事件中,溶解态和颗粒态浓度均随径流冲刷稳步降低; 重金属总浓度水平较高,Cu,Zn,Pb和Cd 4种重金属范围分别为0.048~0.197,0.24~1.03 mg/L,5.3~120.6和0.54~2.34 μg/L; 有4场降雨径流颗粒态Pb的EMC值已超过《地表水环境质量标准》中Ⅲ类标准值50μg/L; Cu的赋存比例fd中值为0.573,同时以溶解态和颗粒态存在,其赋存比例受产流时间影响; Zn,Cd和Pb的fd中值分别为0.179,0.258和0.01,主要存在于颗粒态中.
Abstract:
Dissolved and particulate-bound fraction concentrations of Cu, Zn, Pb and Cd were monitored based on 10 rainfall-runoff events occurred on a representative expressway pavement in Nanjing. Discharge rules, pollution extents and partitioning of dissolved and particulate-bound fraction of heavy metals were evaluated. It is demonstrated that the dissolved fraction concentrations are high initially and then decrease, and the particulate-bound fraction concentrations are fluctuant during those smaller events with long pavement residence time(PRT). The dissolved fraction concentrations initially fluctuate and then decrease, whilst the particulate-bound fraction concentrations decrease gradually during medium events with medium PRT. In larger events with short PRT, the dissolved and particulate-bound fraction concentrations decrease together. The EMCs(event mean concentration)of total Cu, Zn, Pb and Cd are 0.048 to 0.197 mg/L,0.24 to 1.03 mg/L,5.3 to120.6 μg/L and 0.54 to 2.34 μg/L respectively. Particulate Pb EMCs of four rainfall-runoff exceed the total Pb class Ⅲ standard values 50μg/L of the “surface water environmental quality standard”. The fd median values of Cu, Zn, Pb and Cd are 0.573, 0.179, 0.01 and 0.258 respectively. Cu partitioned approximate equally in dissolved and particulate-bound fraction influenced by PRT, while Zn and Cd and Pb are generally particulate-bound.

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[2]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.[doi:10.3969/j.issn.1001-0505.2009.02.029]
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备注/Memo

备注/Memo:
作者简介: 解建光(1974—),男,博士,副教授,Xiejg@nuaa.edu.cn.
基金项目: 江苏省交通科技计划重大资助项目(TZ0761-010).
引文格式: 解建光,李贺,石俊青.路面雨水径流重金属赋存状态研究[J].东南大学学报:自然科学版,2010,40(5):1019-1024. [doi:10.3969/j.issn.1001-0505.2010.05.026]
更新日期/Last Update: 2010-09-20