溶济萃取法处理含硫酸及硫酸盐的废水

采用溶剂萃取法处理含硫酸及硫酸盐的工业废水，主产优质农用硫酸钾，副产氯化铵和氮钾复合肥，整个工艺过程基本无三废排放，实现了对该废水的综合有效治理。     

现代化工分离技术在环境保护中的应用

介绍了高效导向筛板、新型高效填料、超临界流体萃取等现代化工分离技术及其在清洁生产和废物处理方面的应用。     

Occurence and Distribution of Polycyclic Aromatic Hydrocarbons in Ankara Precipitation

Urban atmospheric environment contains many trace organic pollutants that are related to the incomplete fuel combustion in domestic heating, industrial plants and automobile traffic. Removal of these pollutants from the atmosphere takes place through wet and dry deposition as well as chemical transformations. In this study, concentrations of polycyclic aromatic hydrocarbons (PAHs) in wet deposition samples were determined at an urban site of Turkey. Wet and dry deposition samples were collected using Andersen Rain Sampler. The sampler was modified accordingly for the collection of organic pollutants. Collected samples were preconcentrated by using solid phase extraction (SPE) disks and consecutively analyzed by Gas Chromatography-Mass Spectrometry (GC-MS). Among the 13 compounds quantified in this study, anthracene, fluoranthene, and pyrene were found more frequently and at elevated concentrations (202, 271 and 260 ng L^-1 mean concentrations, respectively).Concentrations of PAHs were found to be high in winter period.     

废水中甲酸萃取回收的研究

以ＺＹＭ混合溶剂为萃取剂，以含４．５％的甲酸的废水进行萃取试验，结果表明，ＺＹＭ具有良好的热稳定性和再生性，对废水中的甲酸有较高的萃取率。采用本萃取技术，不但具有显著的环境效益，而且还可回收甲酸，获得较好的经济效益。     

青藏高原北缘P波波形线性度的动态跟踪及其变化的物理机制初探

利用数字化近震Ｐ波波形资料，追踪研究了青藏高原北缘１９９０年２月～１９９５年８月Ｐ波波形时间线性度的变化过程。发现该区较大地震发生前线性度有一定程度的下降现象。分析认为：大震前孕震区应力场的不均匀分布可使通过孕震区及其周缘的地震波产生频散，可能是较大地震前波形时间线性度下降的物理本质     

Comparison of Soil Extraction Isotherms of Soil Samples Saturated With Nonpolar Liquids

In multiphase systems capillary pressures play a significant role on fluid movement and retention. The facility to predict the effect of different thermal remediation strategies requires the knowledge of the effect of temperature on capillary pressure-saturation relationships in the soils. The objective of recent study was (a) to develop a technique for routinely measuring the pressure-saturation curves of soil samples saturated with a nonpolar liquid at different regulated temperatures (b) to build a database using the measured pressure-saturation curves and the physical, chemical properties of the model soils (c) to establish the dependence of nonaqueous phase liquid retention on the soil properties and the temperature. The retention curves (extraction isotherms) with nonaqueous phase liquid were determined using a modified pressure plate extractor. The wetting phase was a non-aromatic hydrocarbon distillation product. Pressure plates were designed and constructed in the laboratory of our department. The temperature was held constant at 20, 40 and 60 ^∘C. Statistical analysis was performed involving selected soil parameters and the measured nonaqueous phase liquid retention data. The results show that knowing some easily measurable soil parameters (bulk density, particle size distribution, humus and lime content) we can estimate the nonaqueous phase liquid retention of the soils. The measured “extraction isotherms” provide essential information about the temperature-dependency of pressure-saturation curves.     

火龙果果皮色素的提取及稳定性研究

研究了火龙果果皮色素提取的最佳条件、提取液的稳定性和各种添加剂对提取液稳定性的影响。     

枇杷核中提取苦杏仁甙的研究

研究了3个枇杷品种的出核率，利用高效液相色谱检测苦杏仁甙的含量，以及从枇杷核中提取苦杏仁甙的工艺。结果表明，3个品种烘干后核的得率存在显著差异，干核的年产量很大，有综合开发利用价值；提取溶剂以乙醇为好，最合理的工艺组合为：在原料中按料液比1：10加入浓度为80％的乙醇，在65℃时回流提取50min。在40℃功率为80W的条件下超声处理25min。合理选择品种是提高苦杏仁甙得率的关键。     

采油厂HSE监督检查管理系统创建实践研究

本文根据采油厂生产过程风险特点,以生产单元为对象,通过建立全员参与的HSE监督检查体系,实现对采油厂HSE监督检查标准的统一规范,利用开发的HSE监督检查信息集成平台,创建完成采油厂HSE监督检查管理系统。在大庆油田第五采油厂的应用实践显示,其能为采油厂带来巨大的风险管理效益,是全面落实直线与属地HSE责任的有效载体。对于采油厂有效实施HSE监督检查具有重大意义,是HSE管理制度的一种创新。     

固相萃取-高效液相色谱法测地表水中11种酚类化合物

建立了固相萃取-高效液相色谱法同时测定地表水中11种酚类化合物的方法。水样经过全自动固相萃取仪富集,以HLB柱为萃取柱,乙腈(含1%乙酸)为洗脱剂,用高效液相色谱仪分析定量。该方法在0.5~5.0 mg/L范围内线性良好,相关系数为0.999 6~0.999 9,11种酚类化合物的纯水加标回收率为82.0%~111%,地表水加标回收率为98.5%~116%,精密度为3.58%~4.67%,检出限为1×10-4~5×10-4mg/L,该方法简单实用、准确可靠,可用于地表水中酚类化合物的同时测定。