钛-氨三乙酸-对氯苯基荧光酮-CTMAB四元配合物的分光光度法研究

本文研究Ti(Ⅳ)-氨三乙酸(NTA)-对氯苯基荧光酮(p-ClPF)-CTMAB四元配合物的显色条件。结果表明,在pH5.8—6.6形成了摩尔比为Ti(Ⅳ):NTA:p-ClPF:CTMAB=1:1:3:3的四元配合物,借此反应测定钛,灵敏度高,其ε_(573nm)=2.1×10~5L·mol~(-1)·cm~(-1)。Ti(Ⅳ)浓度在0—1.4μg/10ml范围服从比耳定律。已用本法直接测定了岩矿和铝合金中的Ti,结果满意。     

碳棒涂膜式PVC膜铯离子选择电极的研制和应用

本文作者研制成功以四苯硼铯为活性物质的碳棒涂膜式PVC膜铯离子选择性电极。电极最佳膜组成:四苯硼铯5mg,邻苯二甲酸二丁酯0.4ml,硝基苯0.2ml,PVC粉0.2g。电极性能优良,制作简单,操作方便。结合大粒度磷钼酸铵和结晶形锑酸分离K~+,Na~+,巳将此电极用于卤水样中铯的测定,结果令人满意。     

金在表生条件下溶解,迁移和沉淀的探讨

金矿物在表生条件下溶解为离子金.离子金与表生络合剂结合成金络离子团迁移.在物化条件改变时,由于有机炭、粘土矿物及带异性电荷胶体吸附,使金络离子团分解成原子金沉淀.     

离子色谱—双电导法同时测定水样中多种阴离子的研究

本文在Dionex2020i离子色谱仪上,选用0.61×10~(-3)mol/L NaHCO_3-1.61×10~(-3)mol/LNa_2CO_3水溶液作淋洗液,在HPIC-AS4A阴离子分离柱上分离痕量F~-、NO_2~-、Br~-和较高浓度的Cl~-、NO_3~-、SO_4~(2-);选用2.0×10~(-3)mol/L TBAOH-6％CH_3CN水溶液作淋洗液,在MPIC-NS1分离柱上分离痕量F~-、Br~-和较高浓度的Cl~-,然后用串联双电导检测器的不同输出范围分别同时定量测定。本法特别适用于相邻两种离子浓度相差较大,前面高含量的离子对后面痕量离子测定有干扰的样品。用本文拟定的HPIC方法测定除铬后的地下水样中多种阴离子的结果与文献值吻合。     

京西黄庄—高丽营断层西段晚更新世末的一次粘滑性活动

本文根据新近大比例尺地质图和探槽开控的结果，认为断层西段（仅在芦井至晓幼营间）晚更新世以来仍有明显活动，这种活动以正段倾滑运动为主，但兼具右旋走滑分量；并且在距今约２．４－２．１万年期间有过一次粘滑性活动，其垂直错距为０．９１．０ｍ；该段断层潜在有发生６－６．５级地震的可能性。     

人工合成硅灰石的发光性质与发光机理的初步研究

在２５４ｎｍ紫外光照激发条件下，对人工合成掺入不同激活离子的低温ＴＣ型和高温型假硅灰石的发光性质进行了实验测定，从微观原子能量谱项讨论了在全的硅灰石基质中Ｅｕ＾３＋和Ｇｄ＾３＋的发光机理，分析了Ｂｉ＾３＋对Ｅｕ＾３＋与Ｐｂ＾２＋对Ｍｎ＾２＋的敏化发光条件，初步探讨了掺放Ｅｕ＾３＋的高温型假硅灰石发光强度减弱的原因。     

离子交换与吸附研究方法

综合文献资料，结合本人研究实践，对离子交换与吸附研究的一些方法做专门介绍．     

线性规划在徐州地下水资源开发中的应用

本文从地下水系统的观点出发,对徐州地区中寒武统—中奥陶统碳酸盐岩地下水系统进行了分析。并应用线性规划的原理和方法对徐州市西郊四个水源地地下水进行了水文地质计算。在规定水位允许降深的约束条件下,求得至2000年,该区地下水最大开采量为14万米~3/天及各水源地相应取水量的最佳分配。文中采用特定条件图解法计算多边界、多主井抽水干扰影响的方法,具有通用意义。     

Some chemical structural features of coals of differing maceral distributions and stratigraphy

Six North American bituminous coals (four Carboniferous and two Cretaceous) and eight maceral concentrates from Carboniferous British seams have been heated with tetralin and hydrogen to 400°C. The hexane-soluble parts of the products were separated by column chromatography and the fractions were then analyzed by gas chromatography/mass spectrometry. In all cases the aromatic hydrocarbon fraction was a very complex mixture containing a number of alkylated biphenyls, diphenylmethanes and -ethanes, and polycyclic compounds. However single ioncchromatography (m/z = 142) showed that, in addition to these, the products from five of the six American coals contained homologous series of long chain n-alkylnapththalenes with alkyl groups extending to C₁₆. In other fractions from the American coals, homologous series of n-alkylfurans and alkylphenols were found to be major components, as also were many alkylcyclohexenones related to isophorone. Extensive homologous series of n-alkyl aromatics were not detected in products from any of six vitrinites from British seams, though series of n- and iso-alkylphenols were found in the products from two sporinite concentrates. A number of polycyclic ketones apparently related to sterols were found in the products from the British vitrinites but not from any American coals. Reasons for what appear to be systematic structural differences between the American and British coals are discussed. Differences in stratigraphy are noted and it seems not impossible that differences in source vegetation are significant.     

Aspects of the cycle of inorganic nitrogen compounds in the tropical rain forest of the Ivory Coast

A partial balance of mineral N is given for the basins of two coastal rivers in a forest zone in the Ivory Coast. The dry and wet depositions on the basin surfaces is given for particulate matter (NO₃ ^–, NH₄ ⁺). The quantity of mineral N washed away in the rivers is evaluated. The losses from leaching of the soils by rainwater are about 0.33 to 1.0% of the atmospheric depositions for NH₄ ⁺–N and 2.2 to 5.8% for NO₃ ^––N. The yearly atmospheric input of N compounds to the ecosystem, about 1.4 g N m^–2 y^–1, is at least 14% of mineral N formed in the soils and is therefore quite significant.