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钢铁工业区降尘对周边土壤的影响
引用本文:倪刘建,张甘霖,杨金玲,阮心玲,赵文君,赵玉国,周立祥.钢铁工业区降尘对周边土壤的影响[J].土壤学报,2007,44(4):637-642.
作者姓名:倪刘建  张甘霖  杨金玲  阮心玲  赵文君  赵玉国  周立祥
作者单位:1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;南京农业大学资源与环境科学学院,南京,210095
2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008
3. 南京农业大学资源与环境科学学院,南京,210095
基金项目:国家自然科学基金;中国科学院知识创新工程项目
摘    要:分别在南京的两个钢铁厂收集降尘并采集周边表土,并用ICP-AES和磁化率仪分析得到16种元素含量和表土、地面尘的磁化率。结果表明,两个钢铁工业区的大气降尘的年沉降通量分别为190t km-2a-1和407 t km-2a-1,这可能会影响着周边地区土壤的形成;Al、K、Na、Ti、V在降尘中的含量显著低于表土,而Ca,Fe,Zn,Mn,Pb,Cu在降尘中含量要显著高于表土;表土的磁化率除水田外均大于100×10-8m3kg-1,并且地面尘的磁化率要远远高于表土的磁化率。研究表明,钢铁工业区降尘对其周边土壤中污染元素的积累有明显影响,突出地表现在土壤表层重金属含量升高,而磁化率可以很好地表征这种表聚的特点。

关 键 词:降尘  沉降通量  重金属  沉降速率  磁化率
收稿时间:2006/4/13 0:00:00
修稿时间:2006-04-132006-09-11

EFFECTS OF ATMOSPHERIC DUST ON SOILS IN INDUSTRIAL ZONES
Ni Liujian,Zhang Ganlin,Yang Jinling,Ruan Xinling,Zhao Wenjun,Zhao Yuguo and Zhou Lixiang.EFFECTS OF ATMOSPHERIC DUST ON SOILS IN INDUSTRIAL ZONES[J].Acta Pedologica Sinica,2007,44(4):637-642.
Authors:Ni Liujian  Zhang Ganlin  Yang Jinling  Ruan Xinling  Zhao Wenjun  Zhao Yuguo and Zhou Lixiang
Affiliation:1 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China ; 2 College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanfing 210095, China
Abstract:Samples of airborne dust and soils around the two steel factories in Nanjing were collected and their element concentrations were analyzed by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and their magnetic susceptibility determined by magnetic susceptibility analyzer.Results indicate that the deposition flux around the two steel factories was 190 t km-2a-1 and 407 t km-2a-1,respectively and the annual accumulation in soil surface due to dust deposition could reach up to 0.3 mm,which is an important contribution to soil formation in a long run.The contents of Al,K,Na,Ti,and V in the dust were lower than that in the surface soils,but Ca,Fe,Zn,Mn,Pb and Cu were much higher.The magnetic susceptibility (MS) of the surface soils was over 100×10-8m3kg-1 except that in the paddy field,and the MS of the roof dust was much higher than that of the surface soils.MS decreased sharply with depth in the several centimeters of soils around the factories,indicating an obvious surface enrichment of magnetic materials and heavy metals.The study reveals that the dust from industrial sources has a strong impact on the soils around,by causing enrichment of heavy metals in the soil surface and sharp rise in magnetic susceptibility.
Keywords:Airborne dust  Deposition flux  Heavy metal  Deposition rates  Magnetic susceptibility
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