GC／MS法定量测定工业废水中半挥发性有机物

采用ＧＣ／ＭＳ方法定量测定工业废水中半挥发性有机物。研究了试样预富集方法，采用不同的预富集方法，对茶，二氢苊及苯并（ａ）芘等７种物质进行富集的结果表明，采用Ｎ２吹与Ｋ－Ｄ浓缩相结合的方法，优于其他方法，其回收率与美国ＥＰＡ－６２５方法的数据相近，回收率在９２％以上，研究了定量测定条件，以２，２′－二氟联苯为内标物质，测定不同浓度的半挥发性ＥＰＡ标准样品的响应因子Ｄ≤２５％。测定了上海焦化厂工业放心     

ISO／TC207年会

ISO／TC207是国际标准化组织中规模和影响最大的技术委员会，目前已拥有93个国家成员和69个通讯成员。其制定的ISO14000环境管理系列标准，覆盖了环境管理体系、环境审核和调查、环境标志和声明、环境绩效评价、生命周期评价。     

石化工业区污水处理厂工艺设计研究

针对某市石化工业区外排水的水质、水量特点，结合其远近期发展规划，设计了以A／O工艺为主体．配以混凝气浮和活性碳吸附作为深度处理的组合工艺实践证明，该工艺具有灵活高效．运行稳定，占地少，自动化程度高的特点：废水处理后水质达到《污水综合排放标准》(GB8978—1996)I类标准。     

Electrically enhanced photodegradation of an azodye(Acid Orange Ⅱ) using a Pt/TiO2 film electrode irradiating with an UV lamp

A photoelectrochemical process in the degradation of an azodye(Acid Orange II)on a Pt/TiO2 film electrode was investigated.By using the glass device and the voltage stabilized source of direct current,decolorization ratios higher than 78% were observed during a period of 5h.Comparing this value with the sum of the decolorization ratios obtained by a sole application of electrochemical(lower than 3%)and photochemical(about 23%)procedures, a significant synergic effect between both processes was observed.The effects of adscititious voltage and pH value on the decolorization ratios were obvious while the effect of the amount of aeration was minor.     

Effect of TiO2 surface properties on the SCR activity of NOx emission abatement catalyst

NOx emission abatement catalysts V2O5 supported on various TiO2 including anatase, rutile and mixture of both were investigated with various physico-chemical measurements such as BET, NH3-TPD, NARP, XRD and so on, and the effect of TiO2 surface properties on the SCR (selective catalytic reduction) activity of V20s/TiO2 catalysts was studied. It was found that the TiO2 surface properties had strong affect on the SCR activity of V2Os/TiO2 catalysts. The stronger acidic property resulted in the higher exposure of active sites as well as the higher SCR activity.     

离子色谱法测定大气氯化氢的质量保证措施探讨

探讨离子色谱法测定大气中氯化氢的全过程质量保证措施，从试验中寻找达到质量保证的关键，从而使该项目的测量误差最小化。     

携手大客户 共赢新未来——安防企业大客户管理问题探讨

在安防行业应用不断向深度、广度扩展的市场竞争环境下,随着顾客需求的个性化、多样化与需求层次的提高,以差异化为主要特征的大客户营销模式已日益成为众多安防企业管理创新的一种选择。"得大客户者得天下",已是不少企业领导人的共识,因为大客户管理不仅仅是营销的范畴,更关系到企业的战略发展。那么,在行业应用不断深化的新时期,安防企业如何开发大客户并维持其忠诚?应该从哪些方面提升大客户管理能力?围绕这些问题,我们与业内优秀企业的相关负责人以及专业的大客户管理咨询师展开深入讨论,希望能够对读者有所帮助。