城市路面径流重金属固液分配系数及其影响因素

常静; 刘敏; 李先华; 余婕; 林啸; 王丽丽; 高磊

城市路面径流重金属固液分配系数及其影响因素

常静¹,
刘敏^2,,
李先华¹,
余婕²,
林啸²,
王丽丽²,
高磊²

1.
上海大学遥感与空间信息科学研究中心, 上海, 200072;
2.
华东师范大学资源与环境科学学院, 教育部地理信息科学重点实验室, 上海, 200062

基金项目: 国家自然科学基金资助项目(40730526)

详细信息

作者简介:
常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者:
刘敏,E-mail:mliu@geo.ecnu.edu.cn

中图分类号: X522

Dissolved-particulate partitioning of heavy metals in urban road runoff of Shanghai

1.
Research Center of Remote Sensing and Spatial Information Science, Shanghai University, Shanghai 200072, China;
2.
Key Laboratory of Geographic Information Science of Ministry of Education, East China Normal University, Shanghai 200062, China

Funds: The study is financially supported by the National Natural Science Foundation of China(No.40730526).

摘要: 以上海市中心城区为例,探讨路面径流重金属在颗粒物-水相间的分配特征及其影响因素.研究表明,路面径流Cr的25%分位数浓度值,以及Zn、Pb、Cd的90%分位数浓度值超出地表Ⅴ类水标准,Cu和Ni污染程度较轻.径流重金属Pb、Zn、Cu及Cd总量浓度与悬浮颗粒物(TSS)含量呈现较明显的正相关关系,Ni与TSS浓度相关性不显著.径流冲刷过程中Cu和Ni溶解态含量比例平均值为35%;Zn和Cr平均值为19%~22%;Cd和Pb溶解态比例最低,平均值为4%~8%.应用扣除残渣态后的颗粒物重金属含量计算固液分配系数依次为Pb>Cd>Zn>Ni>Cu>Cr.径流中悬浮颗粒物浓度与固液分配系数存在显著负相关关系,呈现明显的"颗粒物浓度效应",径流pH值在6.4~7.2区间时对固液分配系数影响相对较小.
- 路面径流 /
- 重金属 /
- 固液分配系数 /
- 影响因素 /
- 上海
Abstract: The partitioning characteristics between the dissolved and particulate-bound fractions of heavy metals in runoff waters in roads are preliminarily invest igated in this paper.56 runoff samples were collected in two rainfall-runoff events in five different areas located in the central area of Shanghai.The results indicate that during the wash-off processes,the 25th percentile concentrations of Cr and the 90th percent ile concentrat ions of Zn,Pb and Cd are over the fifth classified values of the National Surface Water Standards,while the pollution levels of Cu and Ni are relatively lower.The results also show the high positive correlations between the total heavy metal concentrations and the total suspended sediment(TSS) concentrations are in the order of Pb > Cu > Zn > Cd,and the correlation of Ni and TSS is not obvious.The fractions of dissolved-to-total metals are ranked by Cu and Ni of 35%,Zn and Cr of 19%~22%,and Cd and Pb of 4%~8%. With the modified dissolved-particulate partit ioning(K_d) calculated method,the order of K_d is Pb > Cd > Zn > Ni > Cu > Cr.The K_d values of metals show the similar spatial distribution pattern among the different areas.The results also show that TSS concentration has the great negative influence and shows the so-called "particle concentration effect" on K_d values When pH values of runoff belong to the interval of 6.4~ 7.2,it has a relatively weaker effect on K_d values.
- road runoff /
- heavy metal /
- dissolved-particulate partitioning /
- influence factor /
- Shanghai

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城市路面径流重金属固液分配系数及其影响因素

作者简介:
常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者:
刘敏,E-mail:mliu@geo.ecnu.edu.cn

Dissolved-particulate partitioning of heavy metals in urban road runoff of Shanghai

计量

城市路面径流重金属固液分配系数及其影响因素

1. 上海大学遥感与空间信息科学研究中心, 上海, 200072;

2. 华东师范大学资源与环境科学学院, 教育部地理信息科学重点实验室, 上海, 200062

作者简介:
常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者: 刘敏,E-mail:mliu@geo.ecnu.edu.cn

English Abstract

Dissolved-particulate partitioning of heavy metals in urban road runoff of Shanghai

1. Research Center of Remote Sensing and Spatial Information Science, Shanghai University, Shanghai 200072, China;

2. Key Laboratory of Geographic Information Science of Ministry of Education, East China Normal University, Shanghai 200062, China

全文HTML

目录

留言板

城市路面径流重金属固液分配系数及其影响因素

作者简介: 常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者: 刘敏,E-mail:mliu@geo.ecnu.edu.cn

Dissolved-particulate partitioning of heavy metals in urban road runoff of Shanghai

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出版历程

城市路面径流重金属固液分配系数及其影响因素

1. 上海大学遥感与空间信息科学研究中心, 上海, 200072; 2. 华东师范大学资源与环境科学学院, 教育部地理信息科学重点实验室, 上海, 200062

作者简介: 常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者: 刘敏,E-mail:mliu@geo.ecnu.edu.cn

English Abstract

Dissolved-particulate partitioning of heavy metals in urban road runoff of Shanghai

1. Research Center of Remote Sensing and Spatial Information Science, Shanghai University, Shanghai 200072, China; 2. Key Laboratory of Geographic Information Science of Ministry of Education, East China Normal University, Shanghai 200062, China

全文HTML

目录

作者简介:
常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

通讯作者:
刘敏,E-mail:mliu@geo.ecnu.edu.cn

1. 上海大学遥感与空间信息科学研究中心, 上海, 200072;

2. 华东师范大学资源与环境科学学院, 教育部地理信息科学重点实验室, 上海, 200062

作者简介:
常静(1980- ),女,山西晋城人,博士,主要从事城市地表环境过程研究.E-mail:cj1221@yahoo.cn.

1. Research Center of Remote Sensing and Spatial Information Science, Shanghai University, Shanghai 200072, China;

2. Key Laboratory of Geographic Information Science of Ministry of Education, East China Normal University, Shanghai 200062, China