毕树平
长期从事电分析化学和环境分析化学的基础科研与教学工作。
个性化签名
- 姓名:毕树平
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学术头衔:
博士生导师
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学科领域:
分析化学
- 研究兴趣:长期从事电分析化学和环境分析化学的基础科研与教学工作。
毕树平,博士,现为南京大学中青年学术骨干,教授,博士生导师,“分析化学”、“环境化学”,“分析测试学报”“分析科学学报”、“传感技术学报”和“光谱学与光谱分析”、“湖泊科学”和“环境监测管理与技术”等杂志编委,中国化工学会理事,中国环境学会环境化学专业委员会委员。1989 年7 月毕业于南京大学化学系,获理学博士学位,导师为著名分析化学家高鸿院士。自1989 年9 月留校任教以来,长期从事电分析化学和环境分析化学的基础科研与教学工作,曾荣获国家自然科学三等奖(1991年)。1992年以来,瞄准“天然水中铝形态的分析和生态毒理效应研究”这一前沿方向,先后主持与承担国家自然科学基金、国家教委霍英东青年教师基金、江苏省自然科学基金和国家重点实验室开放基金等20 项,六次赴美国合作科研与访问讲学,与美国 Smithsonian Environmental Research Center 、美国加利福尼亚大学伯克利分校,劳伦斯伯克利国家实验室环境生物技术中心和美国德克萨斯大学奥斯汀分校化学和生物化学系建立了长期国际合作关系。已在J. Am. Chem. Soc., Coordination Chemistry Reviews, J. of Chemical Physics, J. of Chromatography A, Environmental Science & Technology 以及Biosensors & Bioelectronics等SCI 杂志上发表论文100多篇。2001年获第二届教育部高等学校优秀青年教师教学科研奖励计划“高校青年教师奖”。
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553
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成果数
14
毕树平, Xiufen Longa, Shuping Bia, ∗, Haiyan Nia, Xiancong Taob, Ning Gana
Analytica Chimica Acta 501(2004)89-97,-0001,():
-1年11月30日
A novel method for the determination of trace amounts of Al(III) based on resonance Rayleigh scattering (RRS) has been developed. In the presence of some surfactants, Al(III) can react with morin and form an Al(III)-morin-surfactant complex, which results in the enhancement of RRS intensity and the appearance of the corresponding RRS spectral characteristics. Their maximum scatter peaks are at476 nm for the cetyltrimethylammonium bromide (CTAB) system, 489 nm for the cetylpyridinium chloride (CPC) system, 474 nm for theTriton X-100 system, and 473 nm for the Tween-20 system. The enhanced RRS intensity is directly proportional to the concentration of Al(III).The detection limits are in the range of (0.50-1.2)×10−7mol l−1 depending on the surfactant. The characteristics of RRS spectra of thecomplexes, the optimum conditions of these reactions and the influencing factors have been investigated. The method has high selectivity, andwas successfully applied to the determination of Al(III) in natural and biological samples. Furthermore, according to different complexationcapacity of Al(III)-morin-CTAB system under two pH conditions, speciation analysis of Al(III) in natural waters was explored. The labilemonomeric Al fraction (mainly inorganic Al, Ali) is determined at acidic pH and the total monomeric Al fraction (Ala) is determined atalkaline pH. The results are in agreement with those obtained by Driscoll’s 8-hydroxyquinoline extraction-ion exchange method.
Resonance Rayleigh scattering, Aluminum, Morin, Surfactant, Natural water, Biological samples
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毕树平, Mingbiao Luo, Shuping Bia, *
Journal of Inorganic Biochemistry 97(2003)173-178,-0001,():
-1年11月30日
An on-line solid-phase extraction (SPE) technique, linked to spectrophotometry, has been developed to overcome the problem of highmatrix concentration, which is thought to interfere with the determination of low levels of aluminum (Al) in environmental samples. Tironmodified resin was prepared and used as a SPE absorbent, which can quantitatively adsorb Al(III) at pH 4-6 with an adsorption capacity of 5.6mg gresin. The main advantages of this novel method are: (1) a much higher sensitivity has been obtained by SPE technology; and (2) a large amount of Na, K, Ca and Mg can be removed and the interference of Fe(III), Mn(II) and F can be efficiently eliminated by eluting with 0.25 mol NaOH. It is a highly selective and sensitive method for simple and quick determination ofdissolved Al in soil extracts and ground waters, particularly suitable for the analysis of complex environmental samples.
Solid-phase extraction, Aluminum, Spectrophotometry, Soil extracts, Ground waters, Eriochrome cyanine R, Environmental sample
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毕树平, Shuping Bi*, Jiong Yu
Journal of Eiectroanalytical Chemistry 405(1996)51-58,-0001,():
-1年11月30日
A new electroanalytical method for studying the electrode reactions, called cyclic reciprocal derivative chronopotentiometry, is proposed. The applied current is successively reversed at each transition, and the reciprocal of the time derivative of the electrode potential, dt/dE, is recorded vs. E. A circuit for providing the reciprocal signal and the carrying out the automatic current reversals is developed. The equations describing the first cycle of the dt/dE-E chronopotentiogram for a reversible reaction have been deduced and experimentally verified.
Cyclic reciprocal derivative chronopotentiometry, Reversible reaction, Electrode
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毕树平, Jian Liu, Xianlong Wang, Gang Chen, Ning Gan and Shuping Bi*
Analyst, 2001, 126, 1404-1408,-0001,():
-1年11月30日
A differential pulse voltammetric (DPV) procedure is proposed for the speciation of aluminium in natural waters using Pyrocatechol Violet chemically modified electrodes (PCV-CMEs). This novel speciation idea is based on the selective determination of different AlIII forms under two pH conditions. The labile monomeric Al fraction (mainly inorganic Al) is analysed at pH 4.8 (0.20mol dm23 NaOAc-HOAc) and the total monomeric Al fraction is analysed at pH 8.5 (0.20mol dm23 NH3·H2O–NH4Cl). The difference is thought to be caused by the weak competition ability of PCV to sequester AlIII from AlIII-natural organic matter complexes. This sensitive and simple speciation method has been applied successfully to aluminium speciation in natural waters sampled from different regions of China. Five fractions are measured directly or indirectly: (i) labile monomeric Al; (ii) total monomeric Al; (iii) acid reactive Al; (iv) non-labile monomeric Al; and (v) acid soluble Al. The results are in satisfactory agreement with those obtained by Driscoll’s 8-hydroxyquinoline extraction-ion exchange method.
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毕树平, Junwei Dia, b, Shuping Bia, ∗, Ming Zhanga
Biosensors and Bioelectronics 19(2004)1479-1486,-0001,():
-1年11月30日
A third-generation biosensor for superoxide anion (O2•−) was developed based on superoxide dismutase (SOD) immobilized by thinsilica-PVA sol-gel film on gold electrode surface. A rapid and direct electron transfer of SOD in the thin sol-gel film at the gold electrode wasrealized without any mediators or promoters. The characterization of the SOD electrodes showed a quasi-reversible electrochemical redoxbehavior with a formal potential of 80+5mV (versus SCE) in 50mmol l−1 phosphate buffer solution (PBS), pH 7.0. The heterogeneouselectron transfer rate constant was evaluated to be about 2.1s−1. The anodic and cathodic transfer coefficients are 0.6 and 0.4, respectively.Based on biomolecular recognition for specific reactivity of SOD toward O2•−, the SOD electrode was applied to a sensitive and selectivemeasurement of O2•− with the low operation potential (−0.15V versus SCE) in phosphate buffer solution, pH 7.0. The amperometric responsewas proportional to O2•− concentration in the range of 0.2-1.6mol l−1 and the detection limit was 0.1mol l−1 at a signal-to-noise rationof 3. The preparation of SOD electrode is easy and simple. The uniform porous structure of the silica-PVA sol-gel matrix results in a fastresponse rate of immobilized SOD and is very efficient for stabilizing the enzyme activity.
Superoxide (, O2•−), sensor, Superoxide dismutase (, SOD), , Electrochemical detection, Sol-gel method
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毕树平
,-0001,():
-1年11月30日
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毕树平
,-0001,():
-1年11月30日
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毕树平, Li Yang, Zhengbiao Yang, Min Zhang, Haiyan Ni, Ming Ji, Yongzheng Tang, Xiaodi Yang, Xiufen Long, Shuping Bi*
Electroanalysis 2004, 16, No.12,-0001,():
-1年11月30日
The voltanunetric behavior of a ketoglutarate (a-KG) at the hanging inercury drop electrode (HMDE) has beeninvestigated in acetate buffer solution. Under the optinmln experimental conditions (pH 4.5, 0.2 M NaAc HAc buffersolution), a sensitive reductive wave of a KG was obtained by lineal scan voltalimletpy (LSV) and the peak potentialwas 1.18V (vs. SCE), which was an ineversible adsolLotion wave. Tile kinetic parameters of the electrode processwere a 0.3 and k=0.721/s. There was a linear relationship between peak current ip, a:o and a KG concentration inthe range of 2x10-6-8x10-4 M a-KG. Tile detection limit was 8x10-7 Mand the relative standard deviation was2.0% (Cαkg=8x10-4M, n=10). Applications of the reductive wave of a KG for practical analysis were addressedas follows: (1) It can be used for the quantitative analysis of a KG in biological samples and the results agree well withthose obtained fronl the established ultraviolet spectrophotolnetric nlethod. (2) Utilizing the colnplexing effectbetween a KG and aluminum, a linear relationship holds between the decrease of peak current of a KG Aip and theadded AI concentration CAm in the range of 5.0 x10-6-2.5x10-4M. Tile detection limit was 2.2x10-6M and therelative standard deviation was 3.1% (CAm=4x10-5 M,n=10). It was successfully applied to the detection ofaluminum in water and synthetic biological samples with satisfactory results, which were consistent with those of ICPAES. (3) It was also applied to study the effect of AIm on the glutamate dehydrogenase (GDH) activity in thecatalytically reaction of a KG+NH+NADH=L giutalnate+NAD++H20 by differential pulse polarogTaphy(DPP) technique. By inoditolring DPP reductive currents of NAD+ and a KG, an elenlentary important result wasfound that AI could greatly affect the activity of GDH. Tiffs study could be attributed to intrinsic understanding of thealuminum's toxicity in etlzylne reaction processes.
α-Ketoglutarate,, Glutamate dehydrogenase (, GDH), reaction system,, NAD+, ,, NADH,, Glutamic acid,, Aluminum,, Linear scan voltammetry,, Electrochemical behaviors,, Differential pulse polarography,, Inhibitory and activation of enzyme
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【期刊论文】A MODEL DESCRIBING THE COMPLEXING EFFECT IN THE LEACHING OF ALUMINUM FROM COOKING UTENSILS
毕树平, Shuping Bi
Environmental Pollution, Vol. 92, No.1, pp. 85-89, 1996,-0001,():
-1年11月30日
A simple model describing the complexing effect in theleaching of aluminum from cooking utensils is presentedin this paper. Some experimental results obtained by previousworkers may be explained by this model, whichdemonstrates that the complexing effect takes a veryimportant role in the process of aluminum liberated fromcooking utensils. Increased concentrations of complexingions (organic acids, fluoride ion, OH-, etc.) significantlyenhance the release of aluminum. The speciation ofaluminum in simulated food solution is also investigated.The model suggests that in the pH range of most food(pH 4-8) aluminum present is predominantly in the form oforganic Al-complexes, which is harmful to the human body.
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【期刊论文】Determination of Strongly Reducing Substances in Sediment
毕树平, QINGMAN LI, *, †, ‡, SHUPING BI, ANDGUOLIANG JI‡
Environ. Sci. Technol. 2003, 37, 5727-5731,-0001,():
-1年11月30日
Reducing substances in sediments play an important rolein regulating the chemical and biological status of thesediment. Strongly reducing substances are the most activepart of them, and are difficult to measure directly. In thiswork, we have developed a method for their determinationbased on the oxidation by Fe(III). Then, the produced Fe-(II) was determined by colorimetry, using 2,2
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