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Chemical Research in Chinese Universities 2003年第2期19卷 155-159页

作者： ZHANG Si chun ZHOU Guo jun JU Huang xian Department of Chemistry Institute of Analytical ScienceState Key Laboratory of Coordination ChemistryNanjing UniversityNanjing 210093P.R.China

A novel chemiluminescence(CL) sensor, which can be used for hydroxylamine determination in combination with flow injection analysis, was developed by electrostatically immobilizing luminol and periodate on anion exchange resin respectively. Hydroxylamine was sensed by its enhancing effect on the weak CL reaction between luminol and periodate, which were eluted from the ion exchange column. The response of the sensor to hydroxylamine was linear in the concentration range of 8.0×10^(-8)-2.0×10^(-6)mol/L with a detection limit of 4.0×10^(-8)mol/L hydroxylamine(3σ).The relative standard deviation(RSD) was 2.0% for 9 repetitive determinations at a hydroxylamine concentration of 5.0×10^(-7) mol/L. The sensor could be reused for over 400 times with a good reproducibility and was used to determine hydroxylamine in wastewater.

关键词： Chemical sensor Chemiluminescence Luminol periodate Hydroxylamine

Flow-injection Chemiluminescence Sensor for the Determination of Gallic Acid by Immobilizing Luminol and periodate on Anion-exchange Resin

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Chinese Journal of Chemistry 2002年第10期20卷 1049-1054页

作者：张四纯周国俊鞠熀先 Department of Chemistry Institute of Analytical Science State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 China

A novel chemiluminescence (CL) sensor for the determination of gallic acid combined with flow injection analysis was developed by electrostatically immobilizing luminol and periodate on anion-exchange resins respectively. Gallic acid was sensed by its enhancing effect on the weak CL reaction between luminol and periodate, which were eluted from the ion exchange column. The possible reaction mechanism of the CL system was suggested and discussed. The response of the sensor to gallic acid concentration was linear over the range of 8.0×10 -9-1.0×10 -6 mol/L with a detection limit of 6.5×10 -9 mol/L (3σ). The relative standard deviation (RSD) for 7 repetitive determinations of gallic acid (1.0×10 -7 mol/L) was 1.8%. The sensor could be used for over 400 times determination with a good reproducibility.

关键词： chemiluminescence sensor gallic acid luminol periodate flow-injection analysis

periodate Oxidation of a Ternary Complex of Nitrilotriacetatochromium(III) Involving ß-Alanine as Co-Ligand

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Open Journal of Inorganic Chemistry 2018年第4期8卷 91-104页

作者： Hassan A. Ewais Ahmed H. Abdel-Salam Amal S. Basaleh Mohamed A. Habib Chemistry Department Faculty of Science King Abdulaziz University Jeddah KSA Chemistry Department Faculty of Science University of Jeddah Jeddah KSA Chemistry Department Faculty of Science Al-Tahadi University Serit Lybia

The kinetics of the periodate oxidation of chromium(III)-complex, [CrIII(NTA)(Ala)(H2O)]-(NTA = Nitrilotriacetate and Ala = ß-alanine) to Cr(VI) have been carried out for the temperature range 15°C - 35°C under pseudo-first order conditions, >>?[complex]. Reaction obeyed first order dependence with respect to and [Cr(III)], and the rate of reaction increases with increasing of pH for the range 3.40 - 4.45. Experimentally, the mechanism of this reaction is found to be consistent with the rate law in which the hydroxo species, [CrIII(NTA)(Ala)(OH)]2- is considerably much more reactive than their conjugate acid. ΔH* and ΔS* have been calculated. It is proposed that electron transfer occurs through an inner-sphere mechanism via coordination of to chromium(III).

关键词： Nitrilotriacetatochromium(III) Ternary Complex periodate Oxidation Inner-Sphere Mechanism Thermodynamic Activation Parameters

Enhanced anaerobic digestion of waste activated sludge with periodate-based pretreatment

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Environmental Science and Ecotechnology 2023年第1期13卷 75-85页

作者： Haixiao Guo Lixin Tian Yufen Wang Kaixin Zheng Jiaqi Hou Yingxin Zhao Tingting Zhu Yiwen Liu School of Environmental Science and Engineering Tianjin UniversityTianjin300072China

The potential of periodate(PI)in sludge anaerobic digestion is not tapped,although it has recently attracted great research interest in organic contaminants removal and pathogens inactivation in wastewater *** is the first work to demonstrate significant improvement in methane generation from waste activated sludge(WAS)with PI pretreatment and to provide underlying *** methane potential tests indicated that methane yield enhanced from 100.2 to 146.3 L per kg VS(VS,volatile solids)with PI dosages from 0 to 100 mg per g TS(TS,total solids).Electron spin resonance showed PI could be activated without extra activator addition,which might be attributed to the native transition metals(e.g.,Fe2t)in WAS,thereby generating hydroxyl radical(-OH),superoxide radicals(-O2-),and singlet oxygen(1O2).Further scavenging tests demonstrated all of them synergistically promoted WAS disintegration,and their contributions were in the order of-O2->-OH>1O2,leading to the release of substantial biodegradable substances(i.e.,proteins and polysaccharides)into the liquid phase for subsequent ***,fluorescence and ultraviolet spectroscopy analyses indicated the recalcitrant organics(especially lignocellulose and humus)could be degraded by reducing their aromaticity under oxidative stress of PI,thus readily for *** community analysis revealed some microorganisms participating in hydrolysis,acidogenesis,and acetoclastic methanogenesis were enriched after PI *** improved key enzyme activities and up-regulated metabolic pathways further provided direct evidence for enhanced methane *** research was expected to broaden the application scope of PI and provide more diverse pretreatment choices for energy recovery through anaerobic digestion.

关键词： Energy recovery Anaerobic digestion Recalcitrant organics Free radicals periodate

IFE based nanosensor composed of UCNPs and Fe(Ⅱ)-phenanthroline for detection of hypochlorous acid and periodic acid

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Journal of Rare Earths 2023年第2期41卷 200-207页

作者： Haining Song Haifeng Zhou Qianqian Zhuang Zexin Li Fenglei Sun Zhenlei Yuan Youxin Lou Guangjun Zhou Yujun Zhao School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China State Key Laboratory of Biobased Material and Green Papermaking School of BioengineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

Oxidizing CIO^(-)and IO_(4)^(-)exist widely in environment and are closely related to the health of ***,fast,sensitive,and direct detection of the two species is *** IFE in UCNPs@PAA and Fe(Ⅱ)-phenanthroline system,an elegant ratiometric fluorescent nanosensor,without noble metal nanoparticle,was designed for the detection of CIO-and IO4-.Fe(Ⅱ)-phenanthroline complex is used as fluorescent absorber,which can quench green light of UCNPs with gradually varied extent depending on the concentration of Fe(Ⅱ).The linear zone extends to 800 and 120μmol/L while the detection limit is 1.30 and 0.58μmol/L for NaCIO and NaIO_(4),***,the nanosensor was successfully applied to detect NaCIO and NaIO4spiked in milk,spring water,and tap water with good recoveries.

关键词： Hypochlorite periodate Nanosensor Upconversion nanoparticles Inner filter effect Rare earths

Spectrophotometric method for the determination of ketoconazole based on amplification reactions

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Journal of Pharmaceutical Analysis 2012年第1期2卷 43-47页

作者： Shaligram S. Rane P. Padmaja Department of Applied Chemistry Faculty of Technology and Engineering The Maharaja Sayajirao University of Baroda Department of Chemistry Faculty of Science The Maharaja Sayajirao University of Baroda

This paper describes a sensitive spectrophotometric method developed for determination of Ketoconazole (KC) in tablets based on amplification reactions. Ketoconazole was oxidized with periodate, resulting in formation of KC2t and iodate ions. After masking the excess periodate with molybdate, the iodate was treated with iodide to release iodine. The liberated iodine was transformed to ICl2 species and extracted as ion-pair with rhodamine 6G into toluene for spectrophotometric measurement at 535 nm. A linear calibration graph was obtained between 0.2136 mg/mL and 1.7088 mg/mL of Ketoconazole with a molar absorptivity of 5 105 mol L 1 cm 1. The procedure was successfully applied for the determination of ketoconazole in tablet formulation.

关键词： Ketoconazole Spectrophotometry Amplification periodate Oxidation

β-cyciodextrin Immobilized CA/PEI Blend Membrane for Removal of Bilirubin

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β-cyciodextrin Immobilized CA/PEI Blend Membrane for Remova...