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Determination of Nickel and Palladium in Environmental Samples by Low Temperature ETV-ICP-OES Coupled with Liquid-liquid Extraction with Dimethylglyoxime as Both Extractant and Chemical Modifier 被引量:5
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作者 PAN Liang QIN Yong-chao HU Bin JIANG Zu-cheng 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2007年第4期399-403,共5页
A novel method for the determination of nickel and palladium in environmental samples by low temperature ETV-ICP-OES with dimethylglyoxime(DMG) as both the extractant and chemical modifier has been developed. In thi... A novel method for the determination of nickel and palladium in environmental samples by low temperature ETV-ICP-OES with dimethylglyoxime(DMG) as both the extractant and chemical modifier has been developed. In this study, it was found that nickel and palladium can form complexes with dimethylglyoxime(0. 05%, mass fraction) at pH 6.0 and can be extracted into chloroform quantitatively. The complexes can be evaporated into plasma at a suita-ble temperature( 1400℃) for ICP-OES detection. Under the optimized conditions, the detection limits of nickel and palladium are 0.48 and 0. 40 ng/mL, respectively, while the RSD values are separately 5.0% and 3.1% (p = 50 ng/mL, n = 7). The proposed method was applied to the determination of the target analytes in environmental sam-ples with satisfactory results. 展开更多
关键词 Low temperature electrothermal vaporization ICP-OES DIMETHYLGLYOXIME chemical modifier Nickel and palladium
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A Glassy Carbon Electrode Modified with Cellulose Nanofibrils from Ammophila arenaria for the Sensitive Detection of L-Trytophan
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作者 Sondes Bourigua Feriel Boussema +4 位作者 Zayneb Jebali Houcine Barhoumi Hatem Majdoub Abderrazak Maaref Nicole Jaffrezic-Renault 《Journal of Sensor Technology》 2024年第3期35-50,共16页
L-tryptophan is an essential amino acid for human health. Nanofibrillated cellulose (NFC) from marram grass (Ammophila arenaria) extracted from plants harvested in the center of Tunisia was used for the first time for... L-tryptophan is an essential amino acid for human health. Nanofibrillated cellulose (NFC) from marram grass (Ammophila arenaria) extracted from plants harvested in the center of Tunisia was used for the first time for the modification of a glassy carbon electrode (GCE), for the sensitive detection of L-tryptophan (Trp). After spectroscopic and morphological characterization of the extracted NFC, the GC electrode modification was monitored through cyclic voltammetry. The NFC-modified electrode exhibited good analytical performance in detecting Trp with a wide linear range between 7.5 × 10−4 mM and 10−2 mM, a detection limit of 0.2 µM, and a high sensitivity of 140.0 µA∙mM−1. Additionally, the NFC/GCE showed a good reproducibility, good selectivity versus other amino acids, uric acid, ascorbic acid, and good applicability to the detection of Trp in urine samples. 展开更多
关键词 Nanofibrillated Cellulose CHITOSAN chemically Modified Glassy Carbon Electrode Electrochemical Detection L-TRYPTOPHAN
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Study of the electrochemical properties of a transition metallic ions modified electrode in acidic VOSO_4 solution 被引量:3
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作者 WANG Wenhong WANG Xindong 《Rare Metals》 SCIE EI CAS CSCD 2007年第2期131-135,共5页
Graphite material was used as the electrode for an all-vanadium redox flow battery, and the electrode was modified by transition metallic ions to enhance its electrochemical behavior. An porous graphite composite elec... Graphite material was used as the electrode for an all-vanadium redox flow battery, and the electrode was modified by transition metallic ions to enhance its electrochemical behavior. An porous graphite composite electrode has high specific surface area and high current density. The electrode modified by transition metallic ions has improved catalysis behavior that can catalyze the V(Ⅱ)-V(Ⅴ) redox reaction showed by cyclic voltammograms. This article studied the impedance of the modified electrode by electrochemical impedance spectroscopy (EIS), and approved that the electrode modified by Co^2+ and Mn^2+ has a lower charge transfer resistance than the non-modified electrode. The effect of average particle size distribution is at lower frequencies that the slope of Warburg impedance is reduced by large particle size distribution. The voltage efficiency of the Co^2+ modified electrode test cell is 81.5%, which is higher than that of the non-modified electrode. 展开更多
关键词 secondary energy source redox flow battery porous electrode ac impedance chemical modified electrode
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Bi_(2)O_(3)/ZnO nanocomposite:Synthesis,characterizations and its application in electrochemical detection of balofloxacin as an antibiotic drug 被引量:3
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作者 Sana Ansari M.Shahnawaze Ansari +1 位作者 Soami P.Satsangee Rajeev Jain 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2021年第1期57-67,共11页
In the present work,a chemically modified electrode has been fabricated utilizing Bi_(2)O_(3)/ZnO nanocomposite.The nanocomposite was synthesized by simple sonochemical method and characterized for its structural and ... In the present work,a chemically modified electrode has been fabricated utilizing Bi_(2)O_(3)/ZnO nanocomposite.The nanocomposite was synthesized by simple sonochemical method and characterized for its structural and morphological properties by using XRD,FESEM,EDAX,HRTEM and XPS techniques.The results clearly indicated co-existence of Bi_(2)O_(3) and ZnO in the nanocomposite with chemical interaction between them.Bi_(2)O_(3)/ZnO nanocomposite based glassy carbon electrode(GCE)was utilized for sensitive voltammetric detection of an anti-biotic drug(balofloxacin).The modification amplified the electroactive surface area of the sensor,thus providing more sites for oxidation of analyte.Cyclic and square wave voltammograms revealed that Bi_(2)O_(3)/ZnO modified electrode provides excellent electrocatalytic action towards balofloxacin oxidation.The current exhibited a wide linear response in concentration range of 150e1000 nM and detection limit of 40.5 nM was attained.The modified electrode offered advantages in terms of simplicity of preparation,fair stability(RSD 1.45%),appreciable reproducibility(RSD 2.03%)and selectivity.The proposed sensor was applied for determining balofloxacin in commercial pharmaceutical formulations and blood serum samples with the mean recoveries of 99.09% and 99.5%,respectively. 展开更多
关键词 ZnO nanoparticles chemically modified electrode VOLTAMMETRY Drug analysis
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Electrochemical Properties of Polypyrrole-Coated Microelectrode Array and the Fabrication of Polypyrrole-Based Microelectronic Devices 被引量:2
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作者 CAI Chen-xin,JU Huang-xian and CHEN Hong-yuan (Department of Chemistry,Nanjing University,Nanjing,210093) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1995年第2期163-169,共7页
Conducting polymers have been studied extensively. An interesting property of the conducting polymer is that the conductivity of some polymers, such as polypyrrolc, polyaniline, poly(3-methylthiophene) etc. , is affec... Conducting polymers have been studied extensively. An interesting property of the conducting polymer is that the conductivity of some polymers, such as polypyrrolc, polyaniline, poly(3-methylthiophene) etc. , is affected by the voltage applied to them. For polypyrrole, the oxidized state is an electronic conductor and the reduced state is essentially insulating. Using this property, one can fabricate the polymer-based electronic devices. Experimental results of Pickun 展开更多
关键词 MICROELECTRODE Microeiectrode array chemically modified electrode Polymer-based electronic devices POLYPYRROLE
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Chemically Modified Chitosan Beads as Molecularly Imprinted Polymer Matrix for Adsorptive Separation of Proteins 被引量:1
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作者 TianYingGUO YongQingXIA GuangJieHAO BangHuaZHANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第11期1339-1341,共3页
In a phosphate buffer, a hemoglobin (Hb)-imprinted polymer complex was prepared using maleic anhydride (MAH) modified chitosan beads as matrix, acrylamide (AM) as functional monomer, N,N-methylenebisacrylamide (MBA) a... In a phosphate buffer, a hemoglobin (Hb)-imprinted polymer complex was prepared using maleic anhydride (MAH) modified chitosan beads as matrix, acrylamide (AM) as functional monomer, N,N-methylenebisacrylamide (MBA) as cross-linker and potassiumpersulfate (KPS) / sodium hydrogen sulfite (NaHSO3) as initiators. Langmuir analysis showed that an equal class of adsorption was formed in the molecular imprinting polymer (MIP), and the MIP has high adsorption capacity and selectivity for the imprinted molecule. The MIP can be reused and the recovery was approximately 100% at low concentration. 展开更多
关键词 chemically modified chitosan beads POLYACRYLAMIDE protein imprinting.
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Performance improvement in polymeric thin film transistors using chemically modified both silver bottom contacts and dielectric surfaces
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作者 谢应涛 欧阳世宏 +4 位作者 王东平 朱大龙 许鑫 谭特 方汉铿 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第9期403-407,共5页
An efficient interface modification is introduced to improve the performance of polymeric thin film transistors. This efficient interface modification is first achieved by 4-fluorothiophenol(4-FTP) self-assembled mo... An efficient interface modification is introduced to improve the performance of polymeric thin film transistors. This efficient interface modification is first achieved by 4-fluorothiophenol(4-FTP) self-assembled monolayers(SAM) to chemically treat the silver source–drain(S/D) contacts while the silicon oxide(SiO2) dielectric interface is further primed by either hexamethyldisilazane(HMDS) or octyltrichlorosilane(OTS-C8). Results show that contact resistance is the dominant factor that limits the field effect mobility of the PTDPPTFT4 transistors. With proper surface modification applied to both the dielectric surface and the bottom contacts, the field effect mobilities of the bottom-gate bottom-contact PTDPPTFT4 transistors were significantly improved from 0.15 cm^2·V^-1·s^-1 to 0.91 cm^2·V^-1·s^-1. 展开更多
关键词 polymeric thin film transistors orthogonal self-assembly chemically modified gate dielectric chemically modified silver bottom c
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Highly dispersed Pd nanoparticles on chemically modified graphene with aminophenyl groups for formic acid oxidation
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作者 杨苏东 申承民 +3 位作者 佟浩 何卫 张校刚 高鸿钧 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第11期190-196,共7页
A novel electrode material based on chemically modified graphene (CMG) with aminophenyl groups is covalently functionalized by a nucleophilic ring-opening reaction between the epoxy groups of graphene oxide and the ... A novel electrode material based on chemically modified graphene (CMG) with aminophenyl groups is covalently functionalized by a nucleophilic ring-opening reaction between the epoxy groups of graphene oxide and the aminophenyl groups of p-phenylenediamine. Palladium nanoparticles with an average diameter of 4.2 nm are deposited on the CMG by a liquid-phase borohydride reduction. The electrocatalytic activity and stability of the Pd/CMG composite towards formic acid oxidation are found to be higher than those of reduced graphene oxide and commercial carbon materials such as Vulcan XC-72 supported Pd electrocatalysts. 展开更多
关键词 chemically modified graphene fuel cell ELECTROCATALYSIS Pd nanoparticles
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A Novel Method of the Preparation ofChemically Modified Electrodes
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作者 LI Gen-xi LIAO Xiang-min FANG Hui-qun and CHEN Hong-yuan(Department of Chemistry,Institute of Coordination Chemistry ,Nanjing University,Manjing,210008 ) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1995年第1期67-70,共4页
ANovelMethodofthePreparationofChemicallyModifiedElectrodesLIGen-xi,LIAOXiang-min,FANGHui-qunandCHENHong-yuan... ANovelMethodofthePreparationofChemicallyModifiedElectrodesLIGen-xi,LIAOXiang-min,FANGHui-qunandCHENHong-yuan(DepartmentofChem... 展开更多
关键词 chemically modified electrodes Preparation method silver Phenoth-iazine HEMOGLOBIN
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The UV-VIS Studies of C_(60) Chemically Modified Polystyrene Film
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作者 Yu Chen Zu En Huang +1 位作者 Rui Fang Cai Wei Wen Ma(Departfnent of Chemistry- Fudan University- Shanghai 200433)Zhong-Chi Wu(Department of Materials Science. Fudan University Shanghai 200433) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第5期447-450,共4页
The opticai properties of C,, chemicaiiy modified poiystyrene(C,, -PS copolymer) and the parent polystyrene (PS) films have been investigated.Addition of bulky C,, moiety, a special functional group, to the polystyren... The opticai properties of C,, chemicaiiy modified poiystyrene(C,, -PS copolymer) and the parent polystyrene (PS) films have been investigated.Addition of bulky C,, moiety, a special functional group, to the polystyrene by anovel organometallic reaction modified considerably the optical property of theparent polystyrene. The lattice periodicity of pure PS film is subject to someperturbation or distortion in varying degrees due to the covalent attachInent of bulkyC,, moiety to the polymer backbone. C,,-PS copolymer possesses a new energy ba-ndstructure with indirect forbidden band when compared with the parent PS. 展开更多
关键词 VIS chemically Modified Polystyrene Film The UV-VIS Studies of C UV
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Electrochemical Determination of Trace Amounts of Lead (Ⅱ) and Cadmium (Ⅱ) at a Calix[6]arene Modified Carbon Paste Electrode
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作者 JIXiao-bo WUYun-hua FEIJun-jie HUSheng-shui 《Wuhan University Journal of Natural Sciences》 CAS 2004年第6期943-948,共6页
An electrochemical method for the simultaneous determination of lead(II) and Cadmium(II) with a calix[6]arene modified carbon paste electrode (CPE) has been developed. Pb2+ and Cd2+ were accumulated at the surface of ... An electrochemical method for the simultaneous determination of lead(II) and Cadmium(II) with a calix[6]arene modified carbon paste electrode (CPE) has been developed. Pb2+ and Cd2+ were accumulated at the surface of the modified electrode via formation of chemical complexes with calix[6]arene, and reduced at 1.40 V. During the following anodic potential sweep, reduced lead and cadmium were oxidized, and two well-defined striping peaks appeared at about ?0.60 V and ?0.84 V. Compared with a bare carbon paste electrode, the calix[6]arene modified CPE greatly improves the sensitivity of determining lead and cadmium. The stripping peak currents change linearly with the concentration of Pb2+ 3.0×10?8–8.0×10?6 mol·L?1 and with that of Cd2+ 6.0×10?8–1.0×10?5 mol ·L?1. The detection limits of Pb2+ and Cd2+ are found to be 8.0×10?9 mol·L?1 and 2.0×10?8 mol·L?1, respectively. The modified carbon paste electrode was applied to determine trace levels of lead and cadmium in water samples. Comparing with that of atomic absorption spectrometry, the results suggests that the calix[6]arene modified CPE has great potential for the practical sample analysis. Key words lead(II) - cadmium(II) - calix[6]arene - differential pulse stripping voltammetry - chemically modified electrode CLC number O 657.15 Foundation item: Supported by the National Natural Science Foundation of China (60171023)Biography: JI Xiao-bo (1980-), male, Master, research direction: electroanalytical chemistry. 展开更多
关键词 lead(II) cadmium(II) CALIX[6]ARENE differential pulse stripping voltammetry chemically modified electrode
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Electrochemical Behavior and Its Electrocatalytic Activity of A P-Mo Heteropolyanion Modified ITO Electrode
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作者 Xiao Feng QIU Jin Zhong XU +1 位作者 Jun Jie ZHU Hong Yuan CHEN 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第7期649-652,共4页
s: A new method for the preparation of an organic-inorganic composite film of the heteropolyanion has been developed by modifying P(Mo2O7)6-7 to the indium tin oxide (ITO) electrode surface. The modified electrode dis... s: A new method for the preparation of an organic-inorganic composite film of the heteropolyanion has been developed by modifying P(Mo2O7)6-7 to the indium tin oxide (ITO) electrode surface. The modified electrode displayed a strong catalytic activity towards the reduction of IO3-. In the range of 1.0?0-6~5?0-4mol/L, the catalytic current was linear proportional to the IO3- concentration. 展开更多
关键词 chemically modified electrode HETEROPOLYANION indium tin oxide electrode IO_(3)^(-).
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Electrochemical Behavior of Eu^(3+) on Eastman AQ-29D Chemically Modified Electrode
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作者 叶宪曾 卜一工 李南强 《Journal of Rare Earths》 SCIE EI CAS CSCD 1994年第1期48-51,共4页
The electrochemical behaviors of Eu3+ on Eastman AQ-29D/glassy carbon(GC) chemically modified electrode(CME) were studied. It was found that the reduction-oxidation process of Eu3+ is in a semi-infinite condition in 0... The electrochemical behaviors of Eu3+ on Eastman AQ-29D/glassy carbon(GC) chemically modified electrode(CME) were studied. It was found that the reduction-oxidation process of Eu3+ is in a semi-infinite condition in 0.1 mol/L NaCIO4 supporting electrolyte(pH 4.4). The calibration curve was linear over the range 1.0×10-7 to 1.0×105 mol/L of Eu3+.The charge transport apparent diffusion coefficient of Eu3+ in the polymer film was determined to be(3.2±1.1)×10-11cm2/s by chronocoulometry. 展开更多
关键词 EUROPIUM chemically modified electrode(CME) Eastman AQ-29D CHRONOCOULOMETRY
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Cyclic Voltammetric Responses of Nitrate Reductase on Chemical Modified Electrodes
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作者 YaRuSONG HuiBoSHAO 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第7期653-654,共2页
Electrochemistry of nitrate reductases (NR) incorporated into 2-aminoethanethiol self-assembled on the gold electrode and polyacrylamide cast on the pyrolytic graphite electrode was examined. NR on chemical modified ... Electrochemistry of nitrate reductases (NR) incorporated into 2-aminoethanethiol self-assembled on the gold electrode and polyacrylamide cast on the pyrolytic graphite electrode was examined. NR on chemical modified electrode showed electrochemical cyclic voltammetric responses in phosphate buffers. 展开更多
关键词 NR cyclic voltammetric response chemical modified electrode.
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Removal of astrazon golden yellow 7GL from colored wastewater using chemically modified clay
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作者 Meltem CAKMAK Seyda TASAR +2 位作者 Veyis SELEN Dursun OZER Ahmet OZER 《Journal of Central South University》 SCIE EI CAS CSCD 2017年第4期743-753,共11页
Chemically modified clay(CMC) was used as an adsorbent for the removal of Astrazon Golden Yellow 7GL(AGY-7GL), which is a basic dye from wastewater. For this purpose, the chemically modified clay was first characteriz... Chemically modified clay(CMC) was used as an adsorbent for the removal of Astrazon Golden Yellow 7GL(AGY-7GL), which is a basic dye from wastewater. For this purpose, the chemically modified clay was first characterized by determining zero point of charge(p Hzpc), and using BET, SEM and FTIR. Then effects of operational parameters on adsorption of AGY-7GL were studied in a batch system. The effect of various parameters such as contact time(0-180 min), pH(2-8), temperature(293-323 K), CMC concentration(0.075-0.5 mg/L) and initial AGY-7GL concentration(75-250 mg/L) were investigated on the adsorption efficiency and capacity adsorption of CMC for the removal of AGY-7GL. Thermodynamic and kinetic parameters were calculated from the results of the adsorption experiment. The evaluation of kinetic models shows that this data best fits the pseudo-second-order model. It is determined that the adsorption equilibrium data works very well with the nonlinear Freundlich isotherm model. Thermodynamic parameters such as ?H^0(19.0 k J/mol), ?G^0(-28.8 k J/mol) and ?S^0(0.148 k J/mol) were also determined. According to the experimental results, it is concluded that CMC could be used as an alternative low cost potential adsorbent for the removal of AGY-7GL from wastewater. 展开更多
关键词 adsorption astrazon golden yellow 7GL(AGY-7GL) chemically modified clay(CMC) thermodynamic and kinetic parameters
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Electrochemical Behaviour of Europium-Ferrocene Derivative Complex Chemi cally Modified Electrodes
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作者 YANG Qing-hua, YE Xianzeng, HUANG Chun-hui (College of Chemical and Molecular Engineering, Peking University, Beijing 100871, China) 《Journal of Rare Earths》 SCIE EI CAS CSCD 2000年第1期13-13,共1页
Electrochemical behaviours of Europium-ferrocene derivative complex chemically modified electrodes were studied in the paper. Various factors which affect the voltammetry of the thin film modified electrodes, and the... Electrochemical behaviours of Europium-ferrocene derivative complex chemically modified electrodes were studied in the paper. Various factors which affect the voltammetry of the thin film modified electrodes, and the charge transport process of the thin film electrode were discussed. Size of the hydrated anion (counter ion), concentration of the electrolyte, swelling property of the film in the solvent and thickness of the film have significant effects on the voltammetry of the thin film electrode. Electrochemical behaviours of europium-ferrocene derivative compelx chemically modified electrode were studied in an aqueous solution. When scan ning between 0-0.8 V (vs. SCE), experimental results indicate that the chemically modified electrode has good stability and reproducibility. The apparent rate constant of electrode reaction is deteminedd to be 6.7×10-1 s-1. 展开更多
关键词 rare earths europium. ferrocene derivative coordination. chemically modified electrode thin film electrode
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A novel aminated polymeric adsorbent for removing refractory dissolved organic matter from landfill leachate treatment plant 被引量:5
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作者 ZHANG Long, LI Aimin, WANG Jinnan, LU Yufei, ZHOU Youdong State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China. 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第8期1089-1095,共7页
Refractory dissolved organic matter (DOM) from landfill leachate treatment plant was with high dissolved organic carbon (DOC) content. An aminated polymeric adsorbent NDA-8 with tertiary amino groups and sufficien... Refractory dissolved organic matter (DOM) from landfill leachate treatment plant was with high dissolved organic carbon (DOC) content. An aminated polymeric adsorbent NDA-8 with tertiary amino groups and sufficient mesopore was synthesized, which exhibited high adsorption capacity to the DOM (raw water after coagulation). Resin NDA-8 performed better in the uptake of the DOM than resin DAX-8 and A100. Electrostatic attraction was considered as the decisive interaction between the adsorbent and adsorbate. Special attention was paid to the correlation between porous structure and adsorption capacity. The mesopore of NDA-8 played a crucial role during uptake of the DOM. In general, resin in chloride form performed a higher removal rate of DOC. According to the colunm adsorption test, total adsorption capacity of NDA-8 was calculated to 52.28 mg DOC/mL wet resin. 0.2 mol/L sodium hydroxide solution could regenerate the adsorbent efficiently. 展开更多
关键词 electrostatic interactions chemically modified resin COAGULATION ADSORPTION pore structure
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Electrocatalytic oxidation of methanol at platinum electrode modified with Eu-Fe cyanide-bridged binuclear complexes 被引量:3
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作者 Ma, Yong Jun Pan, Yu Ying +2 位作者 Wang, Wei Feng Yang, Mei Xia Zhou, Min 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第3期337-340,共4页
The electrocatalytic oxidation of methanol at the platinum electrode modified with Eu-Fe cyanide-bridged binuclear complexes (Eu-Fe film) was investigated for the first time by cyclic voltammetry.Compared with the bar... The electrocatalytic oxidation of methanol at the platinum electrode modified with Eu-Fe cyanide-bridged binuclear complexes (Eu-Fe film) was investigated for the first time by cyclic voltammetry.Compared with the bare platinum electrode,the results showed that the modified electrode had excellent electrocatalytic activity for the oxidation of methanol;the oxidation peak potential shifted more negatively and the peak current increased about twenty times.The electrooxidation of methanol at the modified elect... 展开更多
关键词 METHANOL ELECTROCATALYSIS Cyanide-bridged binuclear complexes EUROPIUM chemically modified electrode
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Determination of 6-Mercaptopurine in Rat Blood by Microdialysis Coupled with High Performance Liquid Chromatography on a Functionalized Multi-wall Carbon Nanotubes Modified Electrode 被引量:1
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作者 LINLi QIUPei-hong +2 位作者 XIEXia-feng CAOXu-ni JINLi-tong 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2005年第2期141-144,共4页
A new chemically modified electrode(CME) immobilized on the surface of multi-wall carbon nanotubes functionalized with carboxylic groups was fabricated. The results indicate that the CME exhibits efficiently electroca... A new chemically modified electrode(CME) immobilized on the surface of multi-wall carbon nanotubes functionalized with carboxylic groups was fabricated. The results indicate that the CME exhibits efficiently electrocatalytic oxidation of 6-mercaptopurine(6-MP). The CME can be used as the working electrode in the liquid chromatography for the determination of 6-MP. The peak current of 6-MP is linearly changed with its concentration ranging from 4.0×10 -7 to 1.0×10 -4 mol/L with the calculated detection limit (S/N=3) of 2.0×10 -7 mol/L. Coupled with microdialysis sampling, the method has been successfully applied to assessing the content of 6-MP in rat blood. 展开更多
关键词 MERCAPTOPURINE Multi-wall carbon nanotube chemical modified electrode HPLC Microdialysis sampling
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Copper modified platinum electrode for amperometric detection of spectinomycin sulfate by anion-exchange chromatography 被引量:1
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作者 Ling Ling Xi Pei Min Zhang Yan Zhu 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第10期1245-1247,共3页
A La^3+-Cu/Pt modified electrode was fabricated by electrodepositing process in CuS04 solution by adding a small amount of lanthium compound, and it was employed for direct current (DC) amperometric detection of sp... A La^3+-Cu/Pt modified electrode was fabricated by electrodepositing process in CuS04 solution by adding a small amount of lanthium compound, and it was employed for direct current (DC) amperometric detection of spectinomycin by anion-exchange chromatography. Without derivatization, this method can simultaneously determine the main component and impurities in spectinomycin pharmaceutical raw material. Ease of preparation, being applied in DC detection mode and good catalytic stability confirmed the interests of this modified electrode as amperometric sensor for the determination of spectinomycin. 展开更多
关键词 Copper/platinum chemically modified electrode High performance anion-exchange chromatography Direct current amperometricdetection SPECTINOMYCIN
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