硫酸盐还原菌对杀菌剂的敏感性研究

江汉油田硫酸盐还原菌(SRB)引起的金属管壁腐蚀和油层堵塞问题一直没有得到彻底解决。不同种群的SRB对同种杀菌剂的敏感程度是不同的。游离SRB和固着型SRB对几种常用杀茵剂的敏感性实验结果表明:除了ME以外,其余几种杀菌剂杀灭培养液中SRB的能力和杀灭固着型SRB的能力由大到小的排序是:BQ-3,WE,BQ-2,BQ-1,1227,BH。ME杀灭培养液中SRB的能力好于前六种杀菌剂,但是其杀灭固着型SRB的能力低于BQ-1。使用同种杀菌剂时,固着型SRB比游离型SRB的杀死难度更大。     

车间空气中呼吸性矽尘卫生标准

对国家标准《车间空气中呼吸性矽尘卫生标准》在25个冶金工厂进行了试用，从卫生要求和浓度测定方法等方面验证该标准对冶金工厂的适用性，并提出了修订建议。     

20t/h煤粉炉除尘系统改造

对大同矿务局中央机厂２０ｔ／ｈ煤粉炉原有除尘系统所存在的问题进行了全面分析，在此基础上，确定了改造方案，进行了改造设计。改造后实际运行情况表明，２０ｔ／ｈ煤粉炉的烟气黑度及烟尘浓度均达到了国家二级标准。     

河流一维水质预测模型在污染贡献值计算中的应用

通过对河流一维水质预测模型的推导和转化,在模型中引入污染源污染物浓度贡献值和预测断面污染物浓度现状监测值,将预测结果同现状监测结果联系起来,使预测结果更贴近实际;探讨利用贡献值简化计算在拟建项目排污口与其下游预测断面间存在若干个未知点源污染情况下的预测断面污染物浓度预测值的方法,以尽可能少人力物力的投入,较为准确、快速的得到预测结果。     

三亚电厂工程影响潮流场数值模拟

运用嵌套方法对拟建三亚电厂工程海域潮流场进行了数值模拟，预测了电厂码头工程对潮流场的影响。模拟结果表明，嵌套方法的应用更精确地模拟了海岸线的几何形状，提高了工程海域潮流场的精度，清晰地再现了流场的微细结构。     

中国未来氟氯化碳(CFC)的生产和消费变化趋势

本文首先分析了中国履行《蒙特利尔议定书》控制CFC的生产和消费的履约目标，回顾了中国历史上CFC的生产和消费，最后提出了中国未来CFC的生产和各相关行业的消费计划。中国将在2010年前淘汰CFC生产和消费，2005-2010年间预计生产CFC共52450t ODP，消费48320t；2005-2010年期间，生产和消费计划量分别从《议定节》限定的目标低15744吨和35700t，现有CFC生产和消费淘汰计划相对安全，而替代品的发展将是保障CFC淘汰目标实现的关键之一。     

Characteristics of mass distributions of aerosol particle and its inorganic water-soluble ions in summer over a suburb farmland in Beijing

Agricultural activity is one of the most important sources of aerosol particles. To understand the mass distribution and sources of aerosol particles and their inorganic water-soluble ions in a suburb farmland of Beijing, particle samples were collected using a microorifice uniform deposit impactor (MOUDI) in the summer of 2004 in a suburb vegetable field. The distribution of the particles and their inorganic water-soluble ions in the diameter range of 0.18–18 μm were measured. The dominant fine particle ions were SO₄ ²⁻, NO₃ ⁻, and NH₄ ⁺. The association of day-to-day variation of the concentration of these ions with temperature, humidity, and solar radiation suggested that they are formed by the reaction of NH₃ released from the vegetable field with the acid species produced from photochemical reactions. Fine particle K⁺ is likely from vegetation emission and biomass burning. Coarse particles like Ca²⁺, Mg²⁺, NO₃ ⁻, and SO₄ ²⁻ are suggested to come from the mechanical process by which the soil particle entered the atmosphere, and from the reaction of the acid species at the surface of the soil particle. The results show that fertilizer and soil are important factors determining the aerosol particle over agricultural fields, and vegetable fields in suburban Beijing contribute significantly to the aerosol particle. Translated from Environmental Science, 2006, 27(2): 193–199 [译自: 环境科学]     

Gas phase trichloroethylene removal at low concentration using activated carbon fiber

The breakthrough adsorption behaviors of gas phase trichloroethylene in a packed bed of activated carbon fibers(ACF) were investigated. The specific surface area of the ACF was 600 m^2/g, 1400 m^2/g and 1600 m^2/g, respectively, and the concentration of trichloroethylene ranged from 270 mg/m^3 to 2700 mg/m^3 . Results showed that the capacity of adsorption increased with increasing specific surface area, the relationship between the logarithms of 10% breakthrough time and concentration was approximately linear over the experimental range, the breakthrough time decreased with increasing temperature and humidity. The breakthrough curves at different inlet concentration or different temperature can be predicted by several simple theoretical models with good agreements.     

钼酸铵分光光度法测定水中总磷的不确定度评估

依据JJG1059-1999对钼酸铵分光光度法测定水中总磷的不确定度进行了评估。分析了影响测量不确定度的各个因素。对测量结果的不确定度进行了评定和表述。     

铬天青S分光光度法测定痕量铝的研究

研究了铝-铬天青S(CAS)-溴化十六烷基吡啶(CPB)分光光度法测定水样中痕量铝的最佳实验条件。结果表明:铝-铬天青S(CAS)-溴化十六烷基吡啶(CPB)三元显色体系的最大吸收波长为640nm;最佳显色时间30m in;显色剂铬天青S(CAS)最佳用量2.00mL(0.5g/L);最佳显色pH5.5。在实验确定的最佳条件下,测定结果有较好的稳定性,较高的准确度。