| 港口环境镉和铅的迁移行为研究及模型的建立 |
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| 引用本文： | 王振坤,靳宏,李学军,张弛,孙鑫,边涛,莫宇清,罗蔷.港口环境镉和铅的迁移行为研究及模型的建立[J].岩矿测试,2013,32(5):753-758. |
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| 作者姓名： | 王振坤 靳宏 李学军 张弛 孙鑫 边涛 莫宇清 罗蔷 |
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| 作者单位： | 天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津口岸检测分析开发服务有限公司, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456;天津出入境检验检疫局化矿金属材料检测中心, 天津 300456 |
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| 基金项目： | 国家质量监督检验检疫总局科研课题"进出口资源性矿产品港口环境风险模型研究"(2011IK046) |
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| 摘 要： | 港口矿产品堆场的重金属溶出作为港口土壤、水体的重要污染源不容忽视。本文在天津港口7个有代表性的矿产品堆场采集土壤和水体样品,确定重金属的污染状况;应用微宇宙系统模拟Cd和Pb在港口沉积物和水体生态系统中的迁移行为,通过建立多介质逸度模型对微宇宙系统的模拟情况进行拟合,探索Cd和Pb在沉积物和水体中的归趋和迁移规律。现场采样分析表明,矿产品堆场重金属污染较为严重,其中Cd污染显著,超过国家土壤三级标准。微宇宙系统试验表明,Cd的污染状况分析与现场采样分析结果一致;沉降是Cd和Pb在水环境中主要的迁移过程,在试验时长216 h内,Cd大约有61%保留在沉积物中,倾向于停留在水相中,容易通过水体的平流和扩散扩大污染范围,而Pb有99%保留在沉积物中,更容易吸附在悬浮物表面而向沉积物相沉积。研究表明,露天堆放的矿产品的影响是显著的,应尽可能采用集装箱堆放方式,减少矿石直接与雨水接触的机会,封闭污染通道,降低环境效应。
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| 关 键 词： | 港口矿产品堆场 重金属 多介质逸度模型 微宇宙系统 |
| 收稿时间： | 2012/11/14 0:00:00 |
| 修稿时间： | 2012/12/1 0:00:00 |
Study on Migration of Lead and Admium in the Port Environment and Model building |
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| WANG Zhen-kun,JIN Hong,LI Xue-jun,ZHANG Chi,SUN Xin,BIAN Tao,MO Yu-qing and LUO Qiang.Study on Migration of Lead and Admium in the Port Environment and Model building[J].Rock and Mineral Analysis,2013,32(5):753-758. |
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| Authors: | WANG Zhen-kun JIN Hong LI Xue-jun ZHANG Chi SUN Xin BIAN Tao MO Yu-qing and LUO Qiang |
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| Institution: | Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Tianjin Inspection and Test Development Service Co., Ltd, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China;Chemicals, Minerals and Metallic Materials Inspection Center, Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China |
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| Abstract: | Based on field research at port mineral yard, leaching of heavy metals as an important port soil, water pollution cannot be ignored. The rules of typical pollutants were simulated by the micro-universe model. In this study, the soil and water samples from 7 heavy metals storage yards of Tianjin Port have been investigated, revealing high Cd pollution in soil. Aquatic microcosm was used to simulate the chemical behavior of lead and cadmium in Tianjin port, and the internal transportation law was found by using the fugacity-based multimedia environmental mathematical model. The results of the model and experiment were consistent, showing that this model is suitable. The results of the model suggest that 61% of the cadmium in the system was sunk into sediment, the rest flowing out with water, and 99% of the lead was sunk into sediment, showing that for cadmium and lead, settling was the main transport process in the aquatic environment, especially for lead. The impact of minerals stored in the open areas is significant, and should be stored in containers without any direct contact with rain. Also, the pollution channel should be kept closed. |
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| Keywords: | port minerals yard heavy metal fugacity-based multimedia environmental model aquatic microcosm |
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