摘要
无棣县位于黄河下游黄泛平原区,也是水源性高碘型地甲病高发区。本文通过对地下水样品分析,得出地下水碘离子的分布规律。其中研究区浅层潜水-微承压水无明显碘离子高值区,从西南内陆到东北部沿海、从河流冲积平原到河间洼地,碘离子的含量逐步增加,其富集主要与海洋的位置关系、地下水径流条件及微地貌有关。研究区深层承压水碘离子含量普遍较高,这与古沉积环境有关。深层承压含水层所在的深度内海侵比较频繁,为碘离子的富集提供了重要来源。其次,碘离子富集规律还与地质构造、水文地质条件等因素有着密切关系,构造凸起区比构造凹陷区碘离子浓度含量低,水文地质补给-径流区比水文地质排泄区碘离子浓度含量低。
Wudi county is located in the lower Yellow River flood plain, and it is the high-incidence area of aquagenic high iodine type endemic goiter. Based on the analysis of groundwater samples, the distribution of iodine ions in groundwater was obtained in this paper. Both the shallow phreatic water and the slightly confined water have no obvious iodine ion high value zone in the research area. The content of iodine ions increases gradually from the southwest inland area to the northeast coastal area, and increases from the alluvial plain to the interchannel depression. The enrichment of iodine ions is mainly related to the location of the ocean, hydrogeological conditions and the micro-topography. The iodine ions in the deep confined water axe very well distributed, and the iodine ions in the whole region axe generally higher, which is related to the paleo-sedimentary environment. When the deep confined aquifer formed, the transgression was comparatively frequent, which provided an important source for the enrichment of iodine ions. The enrichment of iodine ions is also closely related to the geological structure, hydrogeological conditions and other factors. The concentrations of iodine ions in the tectonic uplift areas are mainly lower than that in the tectonic sag, and the concentrations of iodine ions in both the hydrogeological recharge and runoff areas are mainly lower than that in the hydrogeological discharge areas.
作者
李传生
祁晓凡
刘志文
LI Chuan-sheng1, QI Xiao-fan2, LIU Zhi-wen1(1. Shandong Institute of Surveying and Mapping of Geology, Jinan 250002, China; 2. Shandong Institute of Geological Survey, Jinan 250013, China)
出处
《地质调查与研究》
2018年第3期198-203,共6页
Geological Survey and Research
基金
国家地质调查项目"非首都功能疏解区1/5万环境地质调查(DD20160229)"
国家地质调查项目"莱州湾地质环境调查评价(12120113003800)"
山东省国土资源厅地质勘查项目"山东省无棣县地甲病高发区地下水供水安全勘查与示范工程(鲁国土资字[2013]853号)"
关键词
地甲病
碘离子
无棣县
endemic goitre
iodide ion
Wudi county
