Studies on a series complexes of copper (II), zinc (II), cobalt (III) with Schiff base derived fromd-glucosamine and salicylaldehyde

Copper (II) zinc (II) cobalt (III) complexes with the Schiff base derived from salicylaldehyde andd-glucosamine were synthesized. These compounds abbreviated as SG, CuSG, ZnSG, CoSG were characterized by elemental analyses, IR, UV-Vis,¹H NMR and MS spectrum. ESR spectrum, magnetic susceptibility measured by Evans method for CuSG had also been done. It is suggested that the complexes in solution have pseudotetrahedral structure. It was found that SG would occur a photochemical reaction if a beach of 355 nm ultravisible light shone on its aqueous solution. The reaction was in further research. Supported by the National Natural Science Foundation of China Ye Yong: born in 1970, Ph. D graduate student     

亚甲蓝光动力学法测定铁

探讨了亚甲篮在紫外光照射下的吸光性质；选择了测定微量铁的适宜条件；试验了干扰情况，并通过实际样品考察了方法的精密度和准确度．     

SO_2与二烯烃的光化学反应

用ＧＣ和ＧＣ／ＭＳ法研究了ＳＯ＿２，与１，３－丁二烯和１，３－戊二烯在无氧以及有氧体系中的光化学反应。确定了主要反应物，研究了体系的动力学，探讨了部分产物的生成机制。     

硝基安定的光化学荧光特性及其应用

提出了一种光化学荧光分析法（PCFA）测定硝基安定的新方法。在弱碱性介质中，硝基安定溶液经紫外光照射后，发生光化学反应，其产物具有荧光特性，λex=353nm,λem=460nm。硝基安定的浓度在0.25-4.00μg/mL范围围内，荧光相对强度与硝基安定的浓度成良好的线性关系，方法的相对标准偏差和检测限分别为2．0％和45ng/mL，可直接用于片剂中硝基安定含量的测定。     

二氧化硫和烷烃光化学烟雾形成动力学

ＳＯ２与烷烃在３１３０高压汞灯辐照下生成光化学烟雾．实验测量了烟雾强度随ＳＯ２压力和烷烃压力变化的规律．文中提出的烟雾生成动力学模型较好地反映了这些实验规律，并得到ＳＯ２与丙烷、戊烷、己烷生成光化学烟雾速率常数ｋｐ２之比，以及它们的物理猝灭速率常数ｋｑ２之比．     

(E)-1,2-二甲基-3-吲哚乙叉(异丙叉)丁二酸酐的光发色和光消色反应过程

研究了主题化合物(1)及其闭环体(2)的溶剂化效应,(1)→(2)的光化学反应平衡转化率(α),以及光消色反应过程动力学。结果表明,(1)与(2)的最大吸收波长均随溶剂极性的增大而发生不同程度的红移现象。α并未达到100%。对于用波长为577nm的光所引起的光消色反应,进行了稳态的光化学分析处理。结果显示,(2)的激发态分别以82.7ms~(-1)和0.3ms~(-1)的速率常数转变成化合物(2)和(1)。     

Experimental investigation of incremental reactivity of di-tert-butyl peroxide

Large quantities of di-tert-butyl peroxide (DTBP) have been emitted into the troposphere due to human activities. Its role in the atmospheric photochemical reaction has not been understood. This study presents the results of the photochemical reactions of DTBP and NOx, which have been simulated in a self-made smog chamber under the temperature of (29±1)℃. Both the wall decays of ozone and NO2 could be neglected, compared to the results in simulative experiments. The effective intensity of UV light used in the experiments was 1.28×10-3 s-1, which was expressed by the rate constant of NO2 photolysis in purified air. The reaction mechanism was proposed according to our results and reports of other researchers. The maximum values of incremental reactivity (IR) in the three simulative ex- periments were 9.53×10-2, 5.23×10-2 and 3.78×10-2, respectively. The incremental reactivity decreased with the increase of initial concentrations of DTBP. The IR value of DTBP obtained in this study was comparable to that of acetylene reported in our previous research.     

金属离子和氧化剂分别对4—硝基酚光化学降解的影响

在实验条件下，Mn2 ,Fe2 ,Cu2 ,Y3 ,La3 对4－硝基酚光化学降解的加速作用在增加，但幅度不大，KBrO3,KIO3,KIO4对4－硝基酚光化学降解起加速作用（特别是KIO4的加速作用最为显著，光照2h,4-硝基酚降解42．43％），KClO3,KClO4对4－硝基酚光化学降解没有影响。     

卟啉类光敏剂的制备及其研究(Ⅴ)──血卟啉及其衍生物的激光荧光光谱及单态氧的测定

卟啉、氧和光是光化治癌的三个基本要素。本文测定了血卟啉及其衍生物的荧光 光谱及单态氧的相对量子产额。结果表明，血卟啉的荧光强度和单态氧的量子产 额较高，它们均为有效的光敏剂。