包华影
主要研究方向为辐射化学与环境化学。
个性化签名
- 姓名:包华影
- 目前身份:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
勘查地质学
- 研究兴趣:主要研究方向为辐射化学与环境化学。
包华影,女,1953年生,现为北京师范大学化学系教授,博士生导师,北京师范大学继续教育与教师培训学院常务副院长,教育部高校师资培训交流(北京)中心主任,教育部教师资格认定指导中心主任。
1992年获英国索尔福德大学(University of Salford)博士学位,主要研究方向为辐射化学与环境化学,亚洲辐射固化协会秘书长,中国辐射固化协会副理事长,中国辐射化学专业委员会理事,主要研究领域:曾在辐射剂量学方面,研制了PVT剂量膜和染色的PVC剂量指示计。在辐射固化和聚合物辐射改性的研究、应用方面,曾主持一次性注射针专用粘合剂的研制与开发,成功地将该粘合剂投放市场。1989年以来,应用脉冲辐解和激光光解技术进行药物和金属酶模型化合物的研究,为阐明脂氧合酶的催化作用机理提供了重要信息。
包华影教授作为北京师范大学环境科学国家重点学科学术带头人之一,在水污染治理方面进行了大量的研究工作。应用60Co-?射线和电子束分别和新型天然改性高分子絮凝剂、微生物絮凝剂、O2/O3/H2O2等结合先后对处理造纸厂废水、北京市城市生活污水、印染厂废水及其模拟液、饮用水氯消毒副产物等进行了研究,均取得明显效果,发表多篇相关学术论文。现正研究持久性有机污染物、内分泌干扰化合物的辐射和光化学处理及其机理。
曾主持国家教育部重点科技项目、国家教育部骨干教师基金项目,高校博士点学科专项基金等科研项目。
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成果阅读
1040
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成果数
10
包华影, H. Bao*, S. Navaratnam**, B.J.Parsons** and G.O.Phillips**
Radiat. Phys. Chem, Vol. 42, No.4-6, pp. 545-548, 1995,-0001,():
-1年11月30日
One-electron reduction of 1,10-phenanthroline-5, 6-quinone (PQ) in aqueous solutions was studied by pulse radiolysis. It was found that the initial transient species formed by the reaction of c ap* with PQ at neutral pH has an absorption apectrum with maxima at 365nm and 480nm. The decay of the specis follows a first order kinetics to form a subscquent transient speccis with an abourption muximura ao 490nm. Simitar changes were also obscrved at pH 4.1, The formation and decay kinetics of both initial and wubsequent transients at various pH5 were investigated. The ionic strength has no effcct on the decay of the subsequent transient at 4.1, On the other hand, the decay at neutrul Hs was accelerated dramaticall with increasing ionis strength. The plot ncoording to Bronsted Bjerrum equation gives a slope of -4.
Pulse radiolysis,, 1,, 10-phenanthroline-5,, 6-quinese, one-election rolucton, lipoxygenase
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包华影, 贾海顺, 曲国翠, 刘远霞
辐射研究与辐射工艺学报,2000,18(4):263~267,-0001,():
-1年11月30日
采用预辐照的方法研究了淀粉与丙烯酰胺的接枝反应,制备出了淀粉与丙烯酰胺的接枝物;采用元素分析法测量了接枝率。对预辐照接枝反应的一些影响因素,如吸收剂量、反应温度、反应时间、阻聚剂及辐照后效应也进行了研究,并获得了相关结果。淀粉预辐照的吸收剂量约10kGy,辐照后10min内在25~30℃下进行接枝可以获得80%以上的接枝率。
预辐照,, 淀粉-丙烯酰胺,, 接枝反应
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包华影, 贾海顺, 孔瑛, 张世斌
辐射研究与辐射工艺学报,1997,15(1):6~9,-0001,():
-1年11月30日
采用60Coγ辐解,以异丙醇自由基为还原剂,研究了1,10-菲咯啉-5,6-醌(PQ)水溶液的单电子还原性质,获得了pH分别为9、≈7和≈4的水溶液辐照后的紫外、可见吸收光谱。pH9时吸收谱呈现出一个中心在490nm的宽吸收带,低于pH7,这个490nm附近的吸收要小得多,而且随溶液pH值的降低而下降。60Coγ辐解实验的观察与脉冲辐解结果一致。由此建议60Coγ辐解观察到的可见范围的吸收和脉冲中辐解微秒范围所观察到的结果均由辐解终产物引起。质谱研究表明:pH 3.3的水溶液经γ辐解生成一个质量数大于PQ的终产物。此终产物假定为由中性PQ半醌自由基歧化作用产生的PQH2.
γ辐解,, 1,, 10-菲咯啉-5,, 6-醌,, 单电子还原
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【期刊论文】A study of irradiation in the treatment of wastewater
包华影, Huaying Bao*, Yuanxia Liu, Haishun Jia
Radiation Physics and Chemistry 63(2002)633-636,-0001,():
-1年11月30日
A grafting copolymer of starch and acrylamide was prepared by 60 Co-λ pre-irradiation. After purification, the copolymer was modified by a cationic reaction to form a cationic copolymer. The structure of the cationic copolymer was identified by IR and NMR spectroscopy. Using the industrial and sanitary municipal wastewatcr from the Factory of Wastewater Treatment of Gaobeidian in Beijing as the study sample, three-treatment methods: flocculation deposition, ftocculation deposition combined with λ, irradiation and the direct irradiation were carried ont. COD was applied to evaluate the treatment effect. The preliminary results show that the method of flocculation deposition combined with ~, irradiation was effective than the other two.
Wastewater treatment, Irradiation, Flocculant
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包华影, S.Navaratnam B.J. Parsons G.O. Phillips
辐射研究与辐射工艺学报,1997,15(1):10~14,-0001,():
-1年11月30日
用脉冲辐解技术研究了水溶液中的9,10-菲醌(PhQ)单电子还原性质,给出了PhQ半醌阴离子和中性自r扫基的吸收光谱,中。生自由基的酸解离常数,以及PhQ的单电子还原电位。还研究了PhQ半醌自由基的生成动力学,获得了水化电子和异丙醇自由基与PhQ反的二级速率常数。同时还获得了PhQ半醌自由基的衰变速率常数。
脉冲辐解,, 9,, 10-菲醌,, 单电子还原
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包华影, 姚思德, 张俊, 左志华, 姜岳, 林念芸
辐射研究与辐射工艺学报,1996,14(4):193~195,-0001,():
-1年11月30日
采用纳秒级脉冲辐解技术,以2,6-二甲基列苯二醌(DMBQ)为参比物,在pH=7的磷酸盐缓冲溶液中测得邻菲咯啉醌(PQ)的单电子还原电位为-30±5mV。
单电子还原电位,, 脉冲辐解,, 邻菲咯啉醌
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【期刊论文】Stability Studies of 1,10-Phenanthroline-5,6-quinone Complex of Ferrous by. Spectrophotometry
包华影, BAO Hua-ying a*, Navaratnam, S. b, Parsons, B. J. b and Phillips, G. O. b
JOURNAL OF MOLECULAR SCIENCE, 1996, 12 (2): 134~140,-0001,():
-1年11月30日
The spectral characteristics and the stability constants of 1,10-phenanthroline-5, 6-quinone (PQ) complexes of ferrous ions were investigated by means of spec-trophotometry. The electronic absorption spectrum showed a λmax at 482nm and a shoulder at 350 nm when the ratio of the concentration of ferrous ions to that of PQ was 1 "3 and pHs of the solutions were among 3.0-5.6. Lowering pH to 1, the absorbance at 482nm decreased quickly with time. When the ratio of the concentra-tion of ferrous ions to that of PQ was increased from 1:3 to 23:1, the absorbance at 482nm was reduced by ca. 60% and the λmax was found to shift to 456nm. This result means that the absorption at 482nm is mainly due to the tris-PQ complex of ferrous ion. Taking the equilibria and the overlap of their spectra of the three complexes, mono-PQ, di-PO and tris-PQ complexes, into account, the method was employed to obtain the stability constants of the corresponding solutions based on a series of pairs of complex formation functions and free PQ concentrations. The values of lgfll, Igflz and lg/33 for the three PQ complexes were determined to be 5.26, 9. 51 and 14.6, respectively.
Stability,, Ferrous complex,, Phenanthrolinequinone
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【期刊论文】PULSE RADIOLYSIS STUDIES OF 4,7-PHENANTHROLINE(Ⅱ)
包华影, H. BAO*, S. YAO**, Z. ZUO**, J. ZHANG*, N. LIN**
Radiat. Phys. Chem, Vol. 52, Nos 1-6, pp. 383-387, 1998,-0001,():
-1年11月30日
The one-electron reduction of 4,7-phenanthroline (P) in aqueous solutions at neutral pH has been further studied by pulse radiolysis. The spectral and kinetic properties of the transient formed due to the reaction of 4,7.phenanthroline with hydrated electron were investigated. The transient absorption spectrum obtained 5μs tiler the pulse exhibits a broad band with a λmax at 420nm. The λmax is 10nm blue shift compared with the absorption spectrum obtained at pH 2.9 where the reactant was the protonated form. The bimolecular rate coristant of the reaction of 4,7-phenanthroline with hydrated electron was determined to be (2.2±0.1)×10 10dm3mol-1 s-1. It was found that the decay of the transient was mainly following a first-order kinetics. The first-order decay rate constant was determined to be (1.25±0.1)×10 4s-1.
4,, 7-phenanthroline,, pulse radiolysis,, one-electron reduction.,
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包华影, H. Bao, S. Navaratnam, B. J. Parsons and G. O. Phillips
Radiat. Phys. Chem, Vol. 42, Nos 4-6, pp. 989 -992, 1993,-0001,():
-1年11月30日
One-electron oxidation of the ferrous tris-PQ complex, a model for lipoxygenase, was attempted using oxidants such as •OH, N3, Br2, Tl2+ and TlOH+. •OH was found to react with the complex with a bimolecular rate constant of (3.9±0.6)×10 9 dm3 mol-1 s-1, a rate which is not very dissimilar to that for the reaction with the ligand PQ. However the product of the reaction was found to be a 0H-adduct rather than a cation radical. No reaction was found to occur with N3 or Br2. Both Tl2+ and TlOH+ reacted with the complex to form its oxidised species with rate constants of (7.0±1)×10 8 dm3 mol-1 s-1 and (4.0±0.8)×10 8 dm3 mol-1 s-1, respectively. From a comparison of the rate constants and the transient spectra it was concluded that the centre of oxidation is the ligand rather than the metal.
Lipoxygenase, one-electron oxidation, 1,, 10-phenanthroline-5,, 6-quinone, pulse radlolysis, pyrroloquinolinequinone.,
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包华影, S. Navaratnam, B. J. Parsons and G.O.Phillips
辐射研究与辐射工艺学报,2003,21(1):29~34,-0001,():
-1年11月30日
采用脉冲辐解技术,以羟基自由基和硫酸根自由基作为氧化剂,研究了9,10-菲醌(PhQ)在水溶液中的单电子氧化行为,扶取了瞬态产物的吸收光谱和有关动力学数据。在中性pH条件下,PhQ与羟基自由基以(1.5±0.2)×10 10dm3•mol-1•s-1的速率反应,生成一个初级瞬态产物。该瞬态产物的吸收光谱呈现出位于370nm的吸收峰和在较长波长下的一个宽吸收带。进一步实验观察到,随着短波长初级吸收的衰减,可见光区的吸收同步增加,在400nm处形成最大吸收峰,并产生以500nm为中心的宽吸收带,表明次级瞬态产物的形成。PH9.9条件下得到的结果与中性pH的一致。降低pH至2-4,尽管初始瞬态吸收谱也呈现出位于370nm的最人吸收峰,但伴随着初始吸收的衰减,没有观察到可见区域吸收的增加。在中性pH条件下,硫酸根自由基与PhQ反应的速术常数测定为(4.0±0.6)×10 9dm3•mol-1•s-1,生成的瞬态吸收谱与氢氧自由基反应得到的次级吸收谱一致,呈现以400nm和500nm为中心的两个吸收带。基于光谱的相似性和动力学分析,以及羟基自由基和硫酸根自由基的特性,本工作推断反应机理如下:PhQ羟基自由基反应首先生成OH力加成产物,OH加成产物脱水生成阳离子自由基:阳离子自由基办可通过硫酸根自由基的氧化直接产生。
脉冲辅解,, 单电子氧化,, 9,, 10-菲醌
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