| 岩溶山区表土中7Be、137Cs、226Ra和228Ra的地球化学相分配及其侵蚀示踪意义 |
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| 引用本文： | 白占国,万曦,万国江,王长生,黄荣贵. 岩溶山区表土中7Be、137Cs、226Ra和228Ra的地球化学相分配及其侵蚀示踪意义[J]. 环境科学学报, 1997, 17(4): 407-411 |
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| 作者姓名： | 白占国 万曦 万国江 王长生 黄荣贵 |
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| 作者单位： | 厦门大学生物系 |
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| 摘 要： | 利用ＧＣ－ＭＳ定性及ＧＣ－ＦＩＤ定量，测定了１９９３年１１月采自厦门西海域８个站位的表层沉积物样品。应用模糊聚类的方法，结合献资料，对甾醇的指标作用进行了探讨；利用聚类结果去除少量不合理数据，将甾醇划为３类，其在海域中的分布各有特点；Ａ类甾醇带有经处理过的污水的特征，表现出从厦门市最大生活污排污口向四周扩散的过程；
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| 关 键 词： | 甾醇 沉积物 聚类分析 厦门 |
| 收稿时间： | 1996-08-06 |
GEOCHEMICAL SPECIATION OF 7Be, 137Cs, 226Cs and 228Cs IN SOILS OF THE KARST REGION, SOUTHWESTERN CHINA AND THEIR EROSION TRACE |
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| Bai Zhanguo,Wan Xi,Wan Guojiang,Wang Changsheng and Huang Ronggui. GEOCHEMICAL SPECIATION OF 7Be, 137Cs, 226Cs and 228Cs IN SOILS OF THE KARST REGION, SOUTHWESTERN CHINA AND THEIR EROSION TRACE[J]. Acta Scientiae Circumstantiae, 1997, 17(4): 407-411 |
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| Authors: | Bai Zhanguo Wan Xi Wan Guojiang Wang Changsheng Huang Ronggui |
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| Affiliation: | Department of Biology,Xiamen University, Xiamen, 361005,Environmental Science Research Center, the Research Lab of SEDC of Marine Ecological Environment, Xiamen University,Environmental Science Research Center, the Research Lab of SEDC of Marine Ecological Environment, Xiamen University,Environmental Science Research Center, the Research Lab of SEDC of Marine Ecological Environment, Xiamen University and Environmental Science Research Center, the Research Lab of SEDC of Marine Ecological Environment, Xiamen University |
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| Abstract: | The experimental results of geochemical speciation in the soils show that more than 85% of 7Be, 137Cs, 226Cs and 228Cs are bound to organic matter, Fe Mn oxy hydroxide and residual fractions. They can be moved with soil particles and used as tracers for erosion and/or accumulation of soil particles. 7Be geochemical speciation in the soils agrees with its trace for seasonal particle transport. 137Cs geochemical speciation is suitable to trace soil particle accumulation as well as sediment dating. 226Cs and 228Cs are combined in crystalline skeleton of clay minerals and mainly remain as a residue in the soils and very little is bound to the soluble, exchangeable, carbonate fractions. The differentials of 226Cs/ 228Cs activity ratios in different geochemical speciation in the soils can be used as a parameter to trace accumulation and/or erosion of soil particles. |
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| Keywords: | Sterol sediment biomarker classification Xiamen Harbor. |
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