水中氯离子测定时干扰物的消除

用硝酸银滴定法测定水中氯离子时，存在S~2-、SO_3~2-、S_2_O_3~2-的干扰，原用H_2O_2消除干扰，但滴定到达终点后，颜色不太稳定，为此，我们采用过硫酸钾氧化法进行消除干扰的试验。实践证明,该方法对消除上述干扰物是可行的，对测定石油勘探开发废水中氯离子时消除干扰是适用的。     

大气环境质量回顾评价

天然气净化一厂自建厂以来，改进净化硫化氢工艺，采用液相催化反应塔和尾气的烧，并且对大气环境质量进行了回顾评价。大量的厂区环境监测数据表明：硫化氢和二氧化硫得到了有效地控制，周围的农业生态达多少了良性循环状态。     

井底冲击压力特性的研究

运用数值模拟的方法研究了单喷嘴射流撞击井底时产生的冲击压力及其分布规律。研究结果表明，井底最大冲击压力梯度所在的位置距撞击中心约０．１１４倍喷距处，井底最大冲击压力梯度和射流喷速成正比，和喷距成反比，本文绘出了其数学表达式。数值计算结果和室内实验数据吻合较为一致。     

城市防灾救灾计算机集成管理系统初论

本文通过分析现代城市灾害的特点和城市灾害管理的原则，提出了城市减灾集成管理的思想，并按此思想初步分析和设计了一个城市防灾救灾计算机集成管理系统。     

Recent advances in membrane bioreactor technology for wastewater treatment in China

Since the introduction of the membrane bioreactor (MBR) in China in the early 1990s, remarkable progress has been achieved on the research and application of this technology. China has now become one of the most active fields in the world in this regard. This review outlines the development of MBR-based processes in China and their performance of treating municipal and industrial wastewaters. Since membrane fouling is a critical operational problem with MBR processes, this paper also proposes updated understanding of fouling mechanisms and strategies of fouling control, which are mainly compiled from publications of Chinese researchers. As for the commercial application of MBR in the country, the latest statistics of large-scale MBR plants (>10000 m³·d⁻¹) are provided, and the growth trend of total treatment capacity as well as its driving force is analyzed.     

三乙基铝泄漏及预防

介绍了3起典型的三乙基铝泄漏事故,总结了现有三乙基铝系统所采取的安全措施,提出预防三乙基铝系统泄漏应强化的措施。     

受限空间地震时人员疏散的评价——以福州市某高校教学楼为例

根据地震预警原理,利用防火安全疏散理论方法对受限空间类公共场所—某校教学大楼发生地震时的人员安全疏散进行了分析和评价,并根据评价的结论提出了一些建议,为其它类型受限空间抗震安全疏散提供参考。     

Adsorption behavior of phosphate on Lanthanum（III） doped mesoporous silicates material

A series of lanthanum doped meosoporous MCM-41 (LaxM41, x is Si/La molar ratio) was prepared by sol-gel method. The surface structure of the materials was investigated with X-ray diffraction and N2 adsorption/desorption technique. The content of La in the materials was determined by ICP. It was found that the La content of La25M41, La50M41 and La100M41 was 7.53%, 3.89% and 2.32%, respectively. The phosphate adsorption capacities increased with increasing amount of La incorporation. With 0.40 g La25M41 99.7% phosphate could be removed. The effects of Si/La molar ratio, LaxM41 dose, pH, initial concentration of phosphate solution, co-ions on phosphate adsorption were also evaluated. The phosphate adsorption kinetics of LaxM41 could be well-described by the pseudo second-order model, and Langmuir isotherm fit equilibrium data much better than the Freundlich isotherm.     

金属离子鱼类急性毒性研究及对环境标准修订的启示意义

以斑马鱼和孔雀鱼为实验动物,进行了Cu^2＋、Cd^2＋、Zn^2＋和Cr^6＋的鱼类急性毒性试验。结果表明,这四种金属离子对受试鱼的毒性影响比较明显,对斑马鱼、孔雀鱼96 h半致死浓度分别为0.57 mg/L,12.59 mg/L,32.24 mg/L,62.27 mg/L和2.36 mg/L,17.71 mg/L,39.71 mg/L,43.40 mg/L。四种金属离子的毒性大小依次为：Cu^2＋〉Cd^2＋〉Zn^2＋〉Cr^6＋;Cu^2＋、Cd^2＋、Zn^2＋对斑马鱼的影响较大,Cr^6＋则对孔雀鱼的影响较大。结果同时对环境标准的修订具有启示意义,现行的国家《污水综合排放标准》（GB8978-1996）和国家《地表水环境质量标准》（GB3838-2002）对废水和水环境中Cu浓度的要求偏低,在符合国家标准的情况下Cu^2＋在低浓度水平就具有较大的毒性,未来污水排放标准和水环境质量标准在修订中应重视这个问题。     

环保政府网站建设现状及发展探讨

环保政府网站是环保电子政务的重要组成部分,在环保部门实施政务公开、宣传环境保护、服务社会公众方面正发挥越来越重要的作用。在对中国环保政府网站建设现状进行分析的基础上,对进一步加强环保网站建设、提高网站的服务效能提出对策建议。