• 论文 •

大巴山区土壤中硒、氟的地球化学特征

1. 中国科学院地理科学与资源研究所, 北京 100101
• 收稿日期:2002-08-26 修回日期:2002-10-28 出版日期:2003-04-15 发布日期:2003-04-15
• 作者简介:王五一(1949-),男,研究员,博士生导师。长期从事环境生命元素与与健康方向研究工作。E-mail: wangwy@igsnrr.ac.cn
• 基金资助:

国家自然科学基金项目(40171006);中国科学院地理科学与资源研究所创新项目(CXIOGA0205)

The geochemical characteristics of selenium and fluorine in soils of Daba Mountains

WANG Wu yi, LI Yong hua, LUO Kun li, YANG Lin sheng

1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
• Received:2002-08-26 Revised:2002-10-28 Online:2003-04-15 Published:2003-04-15

Abstract:

Se and F are important life elements closely related to health Toxicity or deficiency diseases in plants, animals and human bodies may arise from the abnormal distribution of Se and F in the natural environment In addition, serious pollution effects caused by rapid industrialization and urbanization also create uneven distribution of Se and F, threatening the health of all living organisms Scientists of related disciplines have, in recent years, faced these issues and been involved in studying such relationships Daba Mountains, one of the most poverty stricken areas of China, is also an area with high occurrence of coal burning fluorosis Moreover, its environmental enrichment of Se has produced new problems concerning potential toxicity effects and threats to human health In this work, typical soil profiles in Daba Mountains are selected as our investigative objects, the concentrations and distributions of Se and F in soils are studied The results are shown as follows: The mean concentrations of Se and F in soils of Daba Mountains are 5 70±13 31 μg/g and 622±434 μg/g, respectively, and those values are far higher than their background values in soils of whole China; distributions of Se and F in soil profiles are not the same In general, Se is enriched in surface soil layer, whereas F is enriched in subsoil layer;Se and F concentrations in soils are mainly governed by their concentrations in soil parent The correlation between the two variables can be expressed as Y Se =1 266X Se -0 547(r=0 995, P<0 01), Y F =0 340X F +258 25(r=0 762, P<0 05), respectively, where Y is the Se or F concentrations in soil, and X is the Se or F concentrations in the soil parent Otherwise, environmental geochemical processes, biologic processes and human actions can also profoundly impact the concentrations and redistributions of Se and F in soils

PACS:

• S153.6+1