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苏北梁王城遗址文化层重金属污染评价

ISSN号：0564-3945
期刊名称：《土壤通报》
时间：0
分类：X825[环境科学与工程—环境工程]
作者机构：[1]东北林业大学林学院,黑龙江哈尔滨150040, [2]黑龙江科技学院,黑龙江哈尔滨150027
相关基金：国家自然科学基金面上项目（41171163、40971115）、高校博士点基金项目（20090091110036）、国家科技支撑计划项目“中华文明探源”子项目（2010BAK67802）、国家基础科学人才培养基金资助（J1103408）、国家社科基金重大项目资助（11＆ZD183）、中国博士后基金（2010048113）和南京大学现代分析中心测试基金共同资助

关键词：梁王城遗址, 重金属, 污染评价, 富集因子, 人类活动, Liangwangcheng site, Heavy metal, Pollution evaluation, Enrichment factor, Human activity

中文摘要：

通过对苏北梁王城遗址地层中cu、zn、Pb、Cr、M和A1的含量进行电感耦合等离子体原子发射光谱（ICP—AES）测试，评价该遗址不同历史时期重金属污染程度。单个重金属污染程度从大到小依次是Cu〉Zn〉Pb〉Ni〉Cr。不同历史时期各个单个金属污染程度不同。Cu的污染程度最大出现在战国、北朝和宋代；而zn的污染程度最大出现在北朝；文化层中Pb污染程度变化不明显；Ni和cr各个历史时期污染程度没有什么明显变化。重金属综合污染程度在大汶口文化时期开始增大，到战国时期达到最大，污染程度接近中度污染水平，然后开始减小。富集因子Enrichment Factor（EF）研究表明cu、zn主要受人类活动影响；Ni、cr来源相似主要来自母质风化；重金属Pb既有部分来自人类活动，又有部分来自母质风化；明清文化层中Ph的富集系数有上升的趋势，这可能与Fe大量冶炼和Pb使用量增大有关。金属冶金技术和金属使用情况有关因素可能是影响遗址地层重金属污染程度的主要因素。

英文摘要：

The concentrations of Zn, Cu, Pb, Cr and Ni in soil samples collected from Liangwangcheng site in the north of Jiangsu Province were determined to reconstruct the heavy metal contamination contexts of different historic periods over the last 5,000 years. The results showed that the observed individual heavy metal pollution level sequence was： Cu 〉 Zn 〉 Pb 〉 Ni 〉 Cr. For an individual heavy metal, the contamination levels in different periods were different. The pollution of Cu peaked during the Warring State, Northern Dynasty and Song Dynasty, and Zn peaked during the Northern Dynasty. The pollution levels of Pb in cultural layers differed insignificantly. There were little sign of change in the pollution levels of Ni and Cr during historic periods. The comprehensive heavy metal contamination levels increased since Dawenkou period, peaked during the Warring State with a comprehensive heavy metal level of moderate pollution, and decreased after that period. The enrichment factors （EF） were used to obtain information of heavy metal sources. The EFs showed that most of Zn and Cu came from human activities and Cr, Ni nearly came from the crust weathering. Pb originated both from human activities and the crust weathering. Pb EFs gradually increased since the Ming Dynasty and Qing Dynasty, which coould be coincide with the more and more use of leaded tool and the more sophisticated technology of iron melting.

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