热镀锌板钝化膜的电感耦合等离子体原子发射光谱法测定

建立了电感耦合等离子体发射光谱法测定热镀锌板钝化膜的方法。优化了仪器工作条件,通过对机体匹配消除了无机酸基体干扰。方法检出限为0.148mg/L,对10.000mg/L铬标准溶液测定的相对标准偏差(RSD)为0.507%(n=10),加标回收率为94%～116%,方法精密度通过在优化条件下测定标样得到了验证,方法准确可靠。     

介质中硫酸浓度对NO_3~-氧化—还原机理的影响

介质中硫酸浓度对NO-3氧化—还原反应速率有很大的影响，一般而言，其反应速率随介质中硫酸的浓度增加而加快，但是，当硫酸浓度增加到一定程度时，NO-3与一些常见的金属及应速率急骤下降．并很快停止下来．本文就其反应机理进行了研讨。     

铅酸蓄电池放电特性研究

阐述了阀控铅酸蓄电池电动势与放电强度及放电时间的关系,通过对铅酸蓄电池工作原理、负极钝化机理,以及放电电流、放电温度对放电容量等的影响等方面的说明,来分析阀控铅酸蓄电池的放电特性.     

铝钝化实验的拓展性研究

现行的苏教版高一化学教材中,在铝的性质介绍里增加了铝在冷的浓硫酸和冷的浓硝酸的钝化实验。若只是依教材完成这个实验,则并不能很好激发出学生的学习积极性和主观能动性,要是能在整个教学过程中进行合理联系和精心拓展,就可能会充分调动起学生学习化学的热情,会使同学们增强对化学的理解,增加他们对化学科学探索的兴趣和勇气,会取得一箭多雕的效果。在教学研究过程中,我对此进行了一些探索,并取得了     

解析中学化学中几个电化学疑难问题

本文通过对电极的命名、电极反应、金属的钝化及阳极保护等中学电化学疑难问题的剖析,澄清了某些模糊认识,为中学化学教学提供了理论依据。     

古代铜鼓防腐蚀机理研究

构成铜鼓的材质为青铜合金,经剖析研究其成分和构相,考证其生产工艺和周围环境,发现古代铜鼓具有防腐蚀条件,从而提出该响铜表层可能是经过可熔性六价铬化合物的处理,生成表层并不含铬的防腐层．实验证实这种判断是合理的;经强化试验,证明防腐蚀效果显著．方法亦可用于其他青铜器的保护     

钝化网络模型研究

利用率方程和差分方程对钝化网络模型的演化过程进行了分析,找出了演化方程之间的内在联系.在此基础上,本文采用连续性理论方法对网络模型的度分布和聚类系数进行了精确地解析求解,而且得到了与理论解析解相一致的数值模拟结果.     

多孔硅的原位铁钝化水热制备方法及其腐蚀过程中的化学反应

主要在对新发明的多孔硅的热水制备方法，原位铁钝化水热制备方法进行全面介绍的基础上，结合普通多孔硅的形成机理的一些共识，针对具有优良特性的明显有利于应用的原位铁钝化水热制备方法制备的多孔硅，就其腐蚀过程中的化学反应进行必要的分析和研究。     

Removal of cyclops in pre-oxidizing cooperation water treatment process

Zooplankton cyclops propagates profusely in waterbody, cannot be effectively inactivated by conventional disinfec- tion process, and becomes a troublesome drinking water treatment problem. In this work, the qualitative and quantitative ex- perimental studies were carried out on inactivation of zooplankton cyclops using oxidants, such as chlorine (Cl2), chlorine dioxide (ClO2), ozone (O3), hydrogen peroxide (H2O2), ozone/hydrogen peroxide (O3/H2O2), chloramines (Cl2-NH3) and potassium permanganate (KMnO4). The influences of various factors include different oxidant dosages, organic substance contents and pH values. The results showed that currently available oxidants used all might inactivate cyclops in some extent. According to the experimental results, chlorine dioxide, ozone, ozone/hydrogen peroxide and chloramines can be selected as effective oxidants for inactivating cyclops because of their strong inactivation abilities. Then the synergic removal effects on cyclops with ozone, ozone/hydrogen peroxide pre-oxidation followed by conventional water treatment processes were investigated. The results showed that ozone and ozone/hydrogen peroxide pre-oxidation can inactivate cyclops effectively, which then can be removed thoroughly by conventional water treatment processes. Cyclops cannot appear in water after filtration with 1.65 mg/L of ozone and 6 mg/L of hydrogen peroxide, with the inactivation rate being 62% before conventional water treatment processes. Cyclops cannot appear in water after filtration with 1.8 mg/L of ozone, with the inactivation rate being 50% before conventional water treatment processes. For different oxidants, when removal rate was the best, the inactivation rate was not the same. These results may pro- vide reference and model for actual waterworks.