碘是維持生物體正常新陳代謝的必需元素。機(jī)體長(zhǎng)期的碘攝入過(guò)量增加自身免疫病的風(fēng)險(xiǎn),導(dǎo)致碘中毒和智力下降等癥狀。諸多的研究以放射性碘同位素為主。同時(shí)有關(guān)碘的生物地球化學(xué)行為特征報(bào)道與研究均集中于濱海地區(qū)。本研究選取大同盆地典型高碘地下水系統(tǒng)作為研究對(duì)象,以logistic回歸模型和膠體超濾分級(jí)技術(shù)作為技術(shù)支撐,以天然地下水環(huán)境中不同粒徑膠體上總碘及有機(jī)碘的賦存為研究主線,綜合運(yùn)用水文地質(zhì)調(diào)查、野外現(xiàn)場(chǎng)實(shí)驗(yàn)、室內(nèi)實(shí)驗(yàn)以及模型分析等多種研究方法,以天然高碘地下水碘的主控因素及微觀賦存形態(tài)為分析重點(diǎn),深入分析原生高碘地下水中天然膠體的組成、粒徑分布規(guī)律及其對(duì)不同形態(tài)碘在地下水中的地球化學(xué)行為及遷移富集的影響。論文的主要研究?jī)?nèi)容和成果分為以下幾個(gè)部分:1、大同盆地高碘地下水水文地球化學(xué)特征及碘富集的環(huán)境過(guò)程大同盆地地下水系統(tǒng)中碘的含量最高達(dá)1212μg/L,遠(yuǎn)高于國(guó)家飲用水標(biāo)準(zhǔn)中碘的含量限值（150μg/L）。高碘地下水僅存在于盆地的中心,大于400μg/L的高碘地下水主要分布于埋深小于20m的淺層含水層和埋深介于70m到90m的深層含水層。pH值介于7.5到8.2之間的的弱堿性環(huán)境有利于碘在地下... 

【文章來(lái)源】：中國(guó)地質(zhì)大學(xué)湖北省 211工程院校 教育部直屬院校

【文章頁(yè)數(shù)】：124 頁(yè)

【學(xué)位級(jí)別】：博士

【文章目錄】：
作者簡(jiǎn)介
摘要
Abstract
Chapter 1 Introduction
    1.1 Iodine
        1.1.1 Iodine distribution and cycling in natural environment
        1.1.2 Iodine speciation
        1.1.3 Iodine hydrogeochemical behavior
    1.2 Iodine enrichment in groundwater of Datong Basin
    1.3 Colloids behavior in groundwater
    1.4 Interaction between iodine and colloids in groundwater systems
    1.5 Objectives of this study
Chapter 2 Hydrogeochemistry of Datong Basin
    2.1 Regional geography
    2.2 Hydrogeology
    2.3 Geochemical features of groundwater
Chapter 3 Iodine distribution in groundwater system of Datong Basin
    3.1 Introduction
    3.2 Methodology
        3.2.1 Groundwater collection and chemical analysis
        3.2.2 Sediment sampling and chemical analysis
    3.3 Results and discussion
        3.3.1 Hydrochemistry
        3.3.2 Iodine distribution in groundwater
        3.3.3 Iodine distribution in sediment
    3.4 Summary
Chapter 4 Major factors for high iodine groundwater based on logistic regressionmodel
    4.1 Introduction
    4.2 Methodology
        4.2.1 Data availability
        4.2.2 Method
        4.2.3 Development of iodine prediction model
        4.2.4 Isotope analysis
    4.3 Results
    4.4 Discussion
        4.4.1 Variables contributing to the iodine prediction model
        4.4.2 Verification of predictions
    4.5 Conceptual model of iodine enrichment in groundwater systems
    4.6 Summary
Chapter 5 Effects of organic and inorganic colloids on iodine mobilization ingroundwater
    5.1. Introduction
    5.2. Sampling and analysis
        5.2.1. Field sampling
        5.2.2. Groundwater and solid phase analyses
        5.2.3. Elements distribution ratios （f）
    5.3 Results
        5.3.1. Groundwater characterization
        5.3.2. Fluorescence characteristics and PARAFAC analysis
        5.3.3. 0.45μm filtrate and ultrafiltrate samples
    5.4. Discussion
        5.4.1. Influence of redox potential
        5.4.2. Influence of pH
        5.4.3. Fe/NOM colloids and iodine distribution
    5.5. Implication on iodine enrichment in groundwater
    5.6. Summary
Chapter 6 Effects of organic and inorganic colloids on organic iodine behavior ingroundwater
    6.1 Introduction
    6.2 Sampling and hydrochemical analysis
    6.3 Results
        6.3.1 Groundwater characterization
        6.3.2 Comparison of 0.45 μm filtrate with ultrafiltrate samples
    6.4 Discussion
        6.4.1 Effects of redox potential
        6.4.2 Effects of pH
        6.4.3 Role of Fe/NOM colloids on organic iodine distribution
    6.5 Environmental implications
    6.6 Summary
Chapter 7 Conclusions
Acknowledgements
References


【參考文獻(xiàn)】：
期刊論文
[1]大同盆地地下水流場(chǎng)、水化學(xué)場(chǎng)變化特征[J]. 韓穎.  地質(zhì)調(diào)查與研究. 2008(02)



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