陕西关中晚更新世黄土—古土壤序列特征及其记录的古环境变迁

陕西关中盆地的泾阳南塬和西安东郊席王晚更新世黄土剖面底部的Ｓ１古生境是由４层古土壤及与其相间的两层古土壤构成。这是目前发现的黄土高原晚更新世黄土，古土壤序列保存较好的剖面。两剖面的地层结构，磁化率曲线和地球化学组分反映出了１２个温湿，冷干气候变化阶段可以归纳为６个气候变化旋回。     

广东麒麟绿钙闪石巨晶的地球化学特征

本文对罕见的幔源绿钙闪石巨晶进行了综合的地球化学分析，主要元素，稀土微量元素和Ｓｒ，Ｎｄ同位素的特征表明；绿钙闪石巨晶是碱性玄武岩浆在地幔条件下的结晶产物；相对于寄主玄武岩，绿钙闪石巨晶均属捕虏晶，它们与共存的橄榄岩包体无成因联系，其形成可能与共存的黑色包体有关。     

上扬子地台区晚古生代海相碳酸盐岩的碳,锶同位素研究

未经蚀变的海相碳酸盐岩的碳，锶同位素组成代表了原始海水的同位素组成，在确定样品末经显著蚀变的基础上，本文测定了上扬子地区晚古生代７条剖面２３８个海相碳酸盐岩样品的碳、锶同位素组成，分布了它们的测试结果和演化曲线，为其他相关研究提供了可利用的基础参照数据。     

不同岩溶动力系统的碳稳定同位素和地球化学特征及其意义——以我国几个典型岩溶地区为例

结合水化学的野外观测及室内计算,作者对桂林岩溶试验场、四川黄龙风景区和贵州乌江渡坝区3个岩溶动力系统的碳稳定同位素特征进行了分析,进而对系统的性质、系统中CO_2的来源、碳酸盐沉积过程中的碳同位素动力分馏、水化学和钙华的成因及热水钙华的~(14)C测年等地球化学问题作了探讨。结果表明,桂林岩溶试验场属于表层岩溶作用动力系统,其中的侵蚀动力主要来源于大气降水溶解土壤中的CO_2;四川黄龙风景区属于深部岩溶动力系统,侵蚀动力来自大气降水溶解幔源的CO_2;贵州乌江渡坝区岩溶系统,虽然属于表层岩溶动力系统,但其中一部分的同位素和水化学特征已受到人类活动的重大影响。     

晋北后所金矿床地质特征及矿床成因

后所金矿是产在五台群变质岩中的金矿床，有含金黄铁矿石英脉型和蚀变岩型两种矿化类型本文论述了后所金矿的地质特征，矿物组成，微量元素，稳定同位素地球化学和矿物馀本学特征，探讨了金矿的物质来源和金矿成因，指出了金矿的演化和最后定位于燕山中晚期。     

福建沙县地区早白垩世火山岩成因及构造环境分析

本文着重阐述了沙县地区早白垩世火山岩地球化学特征，论证了中性与酸性火山岩的成因及物质来源，认为二者为不同源岩浆演化的产物，其岩浆物质来源于壳幔混源区，为省内双峰式火两端员岩石间成因关系的分析研究提供了新的例征。     

催化臭氧化降解有机废水及影响因素

主要论述了自制的V-O型催化荆催化臭氧化降解有机废水的研究。试验表明，以TiO2，SiO2，ZrO2作栽体，在氮气或氧气中焙烧，而制得的6种催化荆中，V-O／SiO2／N2显示了较好的催化性能和活性；通过催化荆吸附试验和在反应体系中加入一定量的自由基猝灭荆，初步探讨了其催化机理，即催化荆和臭氧反应，生成了氧化性极强的羟基自由基；催化臭氧化时间、催化荆用量、进气臭氧浓度、体系pH值等因素均对降解产生一定的影响。     

Environmental Properties of Minerals and Contaminants Purified by the Mineralogical Method

The investigation of the environmental properties of minerals, i.e., environmental mineralogy, is a branch of science dealing with interactions between natural minerals and spheres of the Earth surface as well as a reflection of global change, prevention of ecological destruction, participation in biomineralogy, and remediation of environmental pollution. Pollutant treatment by natural minerals is based on the natural law and reflects natural self-purification functions in the inorganic world, similar to that of the organic world - a biological treatment. A series of case studies related to natural self-purification, which were mostly completed by our group, are discussed in this paper. In natural cryptomelane there is a larger pseudotetragonal tunnel than that formed by [MnO6] octahedral double chains, with an aperture of 0.462-0.466 nm2, filled with K cations. Cryptomelane might be a real naturally-occurring mineral of the active octahedral molecular sieve (OMS-2). CrⅥ-bearing wastewater can be treate     

SMBR中污染物处理效率随污泥浓度变化的数学模型

以一体式膜生物反应器(SMBR)对生活污水进行处理,研究不同水力停留时间(HRT)条件下污泥浓度对有机物去除率的影响,并对所得试验数据进行曲线拟合,建立有机物去除率与污泥浓度的数学模型。试验结果表明:在溶解氧(DO)浓度为2.0～3.0mg/L的条件下,HRT为3h、2h和1h时,有机物去除率(η)随着污泥浓度的增大而增大,但当污泥浓度增大到6000mg/L时,η增大趋势逐渐减小,并趋于稳定。有机物去除率与污泥浓度的数学模型表明:有机物去除率(η)与水力停留时间(τ)、进水COD浓度(S_o)和污泥负荷率(N_s)等主要运行参数有关,并可以通过调节运行参数τ、S_o和N_s来达到所需要的COD去除率。     

GEOCHEMICAL CHARACTERISTICS OF GRANITES AND ITS STRUCTURAL GENETIC ENVIRONMENT IN THE NANDAN-HECHI METALLOGENETIC BELT, NORTHWEST GUANGXI

The Nandan-Hechi metallogenetic belt is the most important tin-polymetallic producing district in China, and is the location of the Dachang super-large tin deposit. Based on the detailed field investigation and isotopic data, the stages of magmatic activity in the Nandan-Hechi metallogenetic belt have been lined out in this paper. Through the study about the geochemical characteristics of different granites, and by using ω(Al2O3)-ω(SiO2), ω(TFeO)/[ω(TFeO) ω(MgO)]-ω(SiO2), AFM, ACF and Rb-Yb Ta, Rb-Y Nb,Ta-Yb, Nb-Y discrimination diagrams in combination with regional geological setting analysis, the authors carried out analyses about the structural environment for the formation of the granites, and discussed the structural environment and dynamic setting for the large scale mineralization in this area. Our study indicates that the majority of the granites in Nandan-Hechi metallogenetic belt belong to the POG type,while the later stage alaskite belongs to the RRG CEUG type. The granites were formed at the stage of structural transformation from postorogenic phase to intraplate setting. But the major structural environment is characterized by steady regional extension. The formation age for the granites coincides with the time for this transformation, and this translation environment is favored for large-scale metallogenesis.