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Grabarczyk M, Fialek M. Microelectrode Voltammetric Analysis of Low Concentrations of Se(IV) Ions in Environmental Waters. Molecules 2024; 29:1583. [PMID: 38611862 PMCID: PMC11013906 DOI: 10.3390/molecules29071583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
The current research is an attempt to analyze on-site selenium(IV) ions in environmental water samples using an eco-friendly miniaturized sensor developed by deposition of a very thin amount of metallic bismuth in a solid Bi electrode tightly closed in miniaturized housing. Numerous experimental variables are optimized, including the composition of the supporting electrolyte and its pH, as well as activation and accumulation conditions. Under optimized measurement conditions, the method shows high sensitivity, permitting a very low limit of detection equal to 7 × 10-10 mol L-1 to be achieved in a short accumulation time of 50 s. The performance of this microsensor was investigated against numerous interference factors and its good anti-interference capability was demonstrated. A series of voltammetric experiments by differential pulse cathodic stripping voltammetry (DPCSV) were carried out and they proved that the miniaturized sensor is characterized by very good accuracy and precision as well as long-term stability. The solid bismuth microelectrode displays a good voltammetric response in the analysis of diverse samples with a complex matrix and demonstrates a good recovery rate.
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Affiliation(s)
| | - Marzena Fialek
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, 20-031 Lublin, Poland;
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2
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Balakumar S, Mahesh N, Kamaraj M, Shyamalagowri S, Manjunathan J, Murugesan S, Aravind J, Babu PS. Outlook on bismuth-based photocatalysts for environmental applications: A specific emphasis on Z-scheme mechanisms. CHEMOSPHERE 2022; 303:135052. [PMID: 35618054 DOI: 10.1016/j.chemosphere.2022.135052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/30/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Semiconductor photocatalysis is thought to be a viable solution for addressing the growing problem of environmental pollution. Bismuth (Bi) metal oxides can function as a direct plasmonic photocatalyst or cocatalyst to accelerate the photogenerated charge separation and thus improve their photocatalytic activity. Hence, Bi-based photocatalysts have received a lot of attention due to their extensive environmental applications, including pollutant remediation and energy concepts. Massive efforts have been undertaken in the recent decade to find superior Bi-metal oxides (Bi2XO6, X = MO, W, or Cr) and to uncover the corresponding photocatalytic reaction mechanism for the degradation of organic contaminants in water. Herein, the unique crystalline and electronic properties and main synthesis methods, as well as the major Bi-Based direct Z-scheme photocatalysts, are timely discussed and summarized in their usage in water treatment. Besides, the impact of Bi2XO6 in energy storage devices and solar energy conversion is reviewed as an energy application. Finally, the future development and challenges of Z-scheme-based Bi2XO6 photocatalysts are briefly explored, summarized, and forecasted.
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Affiliation(s)
- Srinivasan Balakumar
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India
| | - Narayanan Mahesh
- Department of Chemistry and Biosciences, Srinivasa Ramanujan Centre, SASTRA Deemed to Be University, Kumbakonam, 612001, Tamil Nadu, India.
| | - M Kamaraj
- Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology - Ramapuram Campus, Chennai, 600089, Tamil Nadu, India
| | - S Shyamalagowri
- PG and Research Department of Botany, Pachaiyappa's College, Chennai, 600030, Tamil Nadu, India
| | - J Manjunathan
- Department of Biotechnology, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, 600117, Tamil Nadu, India
| | - S Murugesan
- PG and Research Department of Botany, Pachaiyappa's College, Chennai, 600030, Tamil Nadu, India
| | - J Aravind
- Department of Bio-Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India
| | - P Suresh Babu
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India; Faculty of Pharmaceutical Sciences, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia.
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3
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Idris AO, Orimolade BO, Mafa PJ, Kuvarega AT, Feleni U, Mamba BB. Carbon-Nanodots modified glassy carbon electrode for the electroanalysis of selenium in water. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Grabarczyk M, Adamczyk M. New Strategies for the Simple and Sensitive Voltammetric Direct Quantification of Se(IV) in Environmental Waters Employing Bismuth Film Modified Glassy Carbon Electrode and Amberlite Resin. Molecules 2021; 26:4130. [PMID: 34299404 PMCID: PMC8306861 DOI: 10.3390/molecules26144130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 11/16/2022] Open
Abstract
An analytical procedure regarding the determination of selenium(IV) by anodic stripping voltammetry exploiting the in situ plated bismuth film electrode is described. Since organics are commonly present in untreated natural water samples, the use of Amberlite XAD-7 resin turns out to be quite important to avoid problems such as the adsorption of these compounds on the working electrode. The optimum circumstances for the detection of selenium in water using differential pulse voltammetry techniques were found to be as follows: 0.1 mol L-1 acetic acid, 1.9 × 10-5 mol L-1 Bi(III), 0.1 g Amberlite XAD-7 resin, and successive potentials of -1.6 V for 5 s and -0.4 V for 60 s, during which the in situ formation of the bismuth film on glassy carbon and the accumulation of selenium took place. The current of the anodic peak varies linearly with the selenium concentration ranging from 3 × 10-9 mol L-1 to 3 × 10-6 mol L-1 (r = 0.9995), with a detection limit of 8 × 10-10 mol L-1. The proposed procedure was used for Se(IV) determination in certified reference materials and natural water samples, and acceptable results and recoveries were obtained.
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Affiliation(s)
| | - Marzena Adamczyk
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, 20-031 Lublin, Poland;
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5
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Wang H, Guo Y, Pan H. Determination of selenium and copper in water and food by hierarchical dendritic nano-gold modified glassy carbon electrodes. Analyst 2021; 146:4384-4390. [PMID: 34132264 DOI: 10.1039/d1an00658d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sensitive determination of selenium and copper is of importance for environmental monitoring and food safety. A stripping voltammetric determination of selenium and copper in water and selenium-rich foods was developed using hierarchical dendritic gold nanostructure (AuHD) modified glassy carbon electrodes (GCE). The AuHD thin films were electrodeposited potentiostatically onto the GCE from a solution containing 25 mM HAuCl4 and 0.1 M Na2SO4 at -0.6 V for 20 min. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) studies showed that the electrodeposited gold thin film shows a nanoforest-like morphology with a thickness of about 30-40 μm and a hierarchical dendritic structure with primary-, secondary-, and higher-order branches. Se(iv) and Cu(ii) in a 0.1 M H2SO4 solution were determined by square-wave anodic stripping voltammetry using the AuHDs/GCE as the working electrode. Prior to anodic stripping, Se(iv) and Cu(ii) were accumulated onto the working electrode surface at -0.2 V for 300 s. The stripping peak currents of Se(iv) at 0.81 V and Cu(ii) at 0.31 V were positively correlated with the concentrations of Se(iv) and Cu(ii) in a range of 50-700 nM. The limits of detection (3σ) for Se(iv) and Cu(ii) were 1.4 nM and 3.7 nM, respectively. The accuracy of the method was verified by analysing certified water standard reference materials, and the results showed that the method has good accuracy and high precision. The method was used to determine selenium and copper in tap water, selenium-rich rice and selenium-rich eggs. The results were compared with those obtained by using inductively coupled plasma-mass spectrometry (ICP-MS) and found to be consistent with those of ICP-MS. The proposed method had the advantages of simplicity, rapidity, good reproducibility, and high sensitivity and it can be used for the analysis of real samples.
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Affiliation(s)
- Haofan Wang
- College of Chemistry and Bioengineering, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, P. R. China
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6
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Rievaj M, Culková E, Šandorová D, Lukáčová-Chomisteková Z, Bellová R, Durdiak J, Tomčík P. Electroanalytical Techniques for the Detection of Selenium as a Biologically and Environmentally Significant Analyte-A Short Review. Molecules 2021; 26:1768. [PMID: 33809841 PMCID: PMC8004073 DOI: 10.3390/molecules26061768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/15/2021] [Accepted: 03/19/2021] [Indexed: 11/16/2022] Open
Abstract
This short review deals with the properties and significance of the determination of selenium, which is in trace amounts an essential element for animals and humans, but toxic at high concentrations. It may cause oxidative stress in cells, which leads to the chronic disease called selenosis. Several analytical techniques have been developed for its detection, but electroanalytical methods are advantageous due to simple sample preparation, speed of analysis and high sensitivity of measurements, especially in the case of stripping voltammetry very low detection limits even in picomoles per liter can be reached. A variety of working electrodes based on mercury, carbon, silver, platinum and gold materials were applied to the analysis of selenium in various samples. Only selenium in oxidation state + IV is electroactive therefore the most of voltammetric determinations are devoted to it. However, it is possible to detect also other forms of selenium by indirect electrochemistry approach.
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Affiliation(s)
| | - Eva Culková
- Electroanalytical Chemistry Laboratory, Department of Chemistry and Physics, Faculty of Education, Catholic University in Ružomberok, Hrabovská cesta 1, SK-034 01 Ružomberok, Slovakia; (M.R.); (D.Š.); (Z.L.-C.); (R.B.); (J.D.); (P.T.)
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Merino IE, Stegmann E, Aliaga ME, Gomez M, Arancibia V, Rojas Romo C. Determination of Se(IV) concentration via cathodic stripping voltammetry in the presence of Cu(II) ions and ammonium diethyl dithiophosphate. Anal Chim Acta 2018; 1048:22-30. [PMID: 30598153 DOI: 10.1016/j.aca.2018.09.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/06/2018] [Accepted: 09/26/2018] [Indexed: 02/08/2023]
Abstract
The development of a methodology for the determination of Se(IV) concentration via cathodic stripping voltammetry is described in this work. The methodology is based on the formation of copper selenide (Cu2Se), whose reduction signal at -0.60 V has been used as an analytical response to quantify the Se(IV) concentration in solution. The novelty of our methodology is the study of this system in the presence of a ligand such as ammonium diethyl dithiophosphate (ADTTP), which forms complexes with Cu(II) and Se(IV). The results showed that the presence of ADTTP plays an important role, increasing the sensitivity of the determination by almost a factor of two compared with the methodology in the absence of the ligand. The optimized conditions were pH 1.6 (phosphoric acid, 2.0 × 10-2 mol L-1), CCu(II) = 1.5 mg L-1, CADTTP = 2.0 μmol L-1, Eacc = -0.40 V and tacc = 45 s. The detection and the quantification limits obtained were 0.065 and 0.21 μg L-1, respectively, and linearity was maintained up to 4.0 μg L-1 of Se(IV). The sensitivity was 10.26 nA L μg-1. On the other hand, the relative standard deviation for 15 replicate measurements at 1.0 μg L-1 of Se(IV) was 1.6%. The usefulness of the method was evaluated by determining Se(IV) in two certified reference materials (TMDW and TM-28.4) with relative errors of less than 2.0%. The proposed method was successfully applied to the determination of Se(IV) in spiked tap water and in a liquid pharmaceutical formulation with satisfactory results. The developed methodology presents a low detection limit, good repeatability, selectivity and linear range. Furthermore, the sensibility of the method was achieved by applying a short accumulation time (45 s).
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Affiliation(s)
- Ignacio E Merino
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago, 7820436, Chile
| | - Edgardo Stegmann
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago, 7820436, Chile
| | - Margarita E Aliaga
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago, 7820436, Chile
| | - Marisol Gomez
- Universidad Bernardo OHiggins, Escuela de Obstetricia y Puericultura and Centro Integrativo de Biología y Química Aplicada (CIBQA), General Gana 1702, Santiago, 8370993, Chile
| | - Verónica Arancibia
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago, 7820436, Chile.
| | - Carlos Rojas Romo
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago, 7820436, Chile.
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8
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A systematic review and meta-analysis of voltammetric and optical techniques for inorganic selenium determination in water. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.07.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Cavalu S, Prokisch J, Laslo V, Vicas S. Preparation, structural characterisation and release study of novel hybrid microspheres entrapping nanoselenium, produced by green synthesis. IET Nanobiotechnol 2017; 11:426-432. [PMID: 28530192 DOI: 10.1049/iet-nbt.2016.0107] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The main goal of this study was to synthesise and characterise different formulations based on alginate and alginate/chitosan microspheres containing nanoselenium (nano-Se) for controlled delivery applications. Nanosize elemental selenium was produced by using probiotic yogurt bacteria (Lactobacillus casei) in a fermentation procedure. The structural and morphological characterisation of the microspheres was performed by Fourier transform infrared (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. FTIR and XRD pattern indicated that was an effective cross-linking of selenium nanoparticles within the polymeric matrix in both cases. The SEM images reveal that selenium nanoparticles are mainly exposed on the surface of alginate, in contrast to porous structure of alginate/chitosan/nano-Se, interconnected in a regular network. This architecture type has a considerable importance in the delivery process, as demonstrated by differential pulse voltammetry. Selenium release from both matrices is pH sensitive. Moreover, chitosan blended with alginate minimise the release of encapsulated selenium, in simulated gastric fluid, and prolong the duration of release in intestinal fluid. The overall effect is the enhancement of total percentage release concomitant with the longer duration of action. The authors' formulation based on alginate/chitosan is a convenient matrix to be used for selenium delivery in duodenum, caecum and colon.
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Affiliation(s)
- Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, P-ta 1 Decembrie 10, 410087, Oradea, Romania.
| | - Jόszef Prokisch
- Institute of Bio- and Environmental Energetics, Debrecen University, Boszormenyi Utca 138, Debrecen 4032, Hungary
| | - Vasile Laslo
- Faculty of Environmental Protection, University of Oradea, 26 Gen. Magheru St., 410048, Oradea, Romania
| | - Simona Vicas
- Faculty of Environmental Protection, University of Oradea, 26 Gen. Magheru St., 410048, Oradea, Romania
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Ochab M, Gęca I, Korolczuk M. Determination of trace Se(IV) by anodic stripping voltammetry following double deposition and stripping steps. Talanta 2016; 165:364-368. [PMID: 28153268 DOI: 10.1016/j.talanta.2016.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 12/13/2016] [Accepted: 12/16/2016] [Indexed: 11/28/2022]
Abstract
A procedure of Se(IV) determination by anodic stripping voltammetry using two deposition and stripping steps at gold electrodes was proposed. A well-defined stripping peak of selenium was obtained at potential 0.9 V. The optimization of parameters influencing the selenium peak current including both deposition and stripping steps was performed. A linear relationship was observed between the Se(IV) peak current and its concentration in the range from 5×10-9 to 1×10-7mol L-1. The limit of detection was found to be 8.5×10-10mol L-1. Repeatability of the method determined as RSD % for Se(IV) concentration of 5×10-8mol L-1 was 4.3% (n=7). The proposed procedure was used for Se(IV) determination in certified reference material and natural water samples and acceptable results and recoveries were obtained.
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Affiliation(s)
- Mateusz Ochab
- Faculty of Chemistry, Maria Curie Sklodowska University, 20-031 Lublin, Poland
| | - Iwona Gęca
- Faculty of Chemistry, Maria Curie Sklodowska University, 20-031 Lublin, Poland.
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Selenium Speciation in Rice Samples by Magnetic Ionic Liquid-Based Up-and-Down-Shaker-Assisted Dispersive Liquid-Liquid Microextraction Coupled to Graphite Furnace Atomic Absorption Spectrometry. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0727-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Sen BK, Tiwari S, Deb MK, Pervez S. Determination of Selenium by Single-Drop Microextraction and Diffuse Reflectance Infrared Spectroscopy. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1229786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Bhupendra K. Sen
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Swapnil Tiwari
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Manas K. Deb
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
| | - Shamsh Pervez
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
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Idris A, Mabuba N, Arotiba O. Electroanalysis of selenium in water on an electrodeposited gold-nanoparticle modified glassy carbon electrode. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.10.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Jost CL, di Martos LM, Ferraz L, do Nascimento PC. Sequential Voltammetric Determination of Uranium, Cadmium and Lead by Using theex situBismuth Film Electrode: Application to Phosphate Fertilizers. ELECTROANAL 2015. [DOI: 10.1002/elan.201500347] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Baś B, Jedlińska K, Węgiel K. New electrochemical sensor with the renewable silver annular band working electrode: Fabrication and application for determination of selenium(IV) by cathodic stripping voltammetry. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Ouyang R, Zhang W, Zhou S, Xue ZL, Xu L, Gu Y, Miao Y. Improved Bi Film Wrapped Single Walled Carbon Nanotubes for Ultrasensitive Electrochemical Detection of Trace Cr(VI). Electrochim Acta 2013; 113:686-693. [PMID: 24771881 PMCID: PMC3997177 DOI: 10.1016/j.electacta.2013.09.110] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report here the successful fabrication of an improved Bi film wrapped single walled carbon nanotubes modified glassy carbon electrode (Bi/SWNTs/GCE) as a highly sensitive platform for ultratrace Cr(VI) detection through catalytic adsorptive cathodic stripping voltammetry (AdCSV). The introduction of negatively charged SWNTs extraordinarily decreased the size of Bi particles to nanoscale due to electrostatic interaction which made Bi(III) cations easily attracted onto the surface of SWNTs in good order, leading to higher quality of Bi film deposition. The obtained Bi/SWNTs composite was well characterized with electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), the static water contact angle and the voltammetric measurements. The results demonstrates the improvements in the quality of Bi film deposited on the surface of SWNTs such as faster speed of electron transfer, more uniform and smoother morphology, better hydrophilicity and higher stripping signal. Using diethylene triaminepentaacetic acid (DTPA) as complexing ligand, the fabricated electrode displays a well-defined and highly sensitive peak for the reduction of Cr(III)-DTPA complex at -1.06 V (vs. Ag/AgCl) with a linear concentration range of 0-25 nM and a fairly low detection limit of 0.036 nM. No interference was found in the presence of coexisting ions, and good recoveries were achieved for the analysis of a river sample. In comparison to previous approaches using Bi film modified GCE, the newly designed electrode exhibits better reproducibility and repeatability towards aqueous detection of trace Cr(VI) and appears to be very promising as the basis of a highly sensitive and selective voltammetric procedure for Cr(VI) detection at trace level in real samples.
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Affiliation(s)
- Ruizhuo Ouyang
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
| | - Wangyao Zhang
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
- Zhejiang Normal University, Jinhua 321004, China
| | - Shilin Zhou
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
| | - Zi-Ling Xue
- Department of Chemistry, The University of Tennessee, Knoxville, 37996, USA
| | - Lina Xu
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
| | - Yingying Gu
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
| | - Yuqing Miao
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093,China
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Chen C, Niu X, Chai Y, Zhao H, Lan M, Zhu Y, Wei G. Determination of Lead(II) Using Screen-Printed Bismuth-Antimony Film Electrode. ELECTROANAL 2013. [DOI: 10.1002/elan.201200625] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Anodic stripping voltammetric measurement of trace cadmium at tin-coated carbon paste electrode. Talanta 2012; 88:707-10. [DOI: 10.1016/j.talanta.2011.11.070] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 11/20/2011] [Accepted: 11/22/2011] [Indexed: 11/22/2022]
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19
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Xiong CH, Luo HQ, Li NB. A stannum/bismuth/poly(p-aminobenzene sulfonic acid) film electrode for measurement of Cd(II) using square wave anodic stripping voltammetry. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2010.11.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Kim MY, Park E, Park JH, Park DH, Moon WS, Cho BH, Shin HS, Kim DG. Expression profile of nine novel genes differentially expressed in hepatitis B virus-associated hepatocellular carcinomas. Oncogene 2001; 20:4568-75. [PMID: 11494152 DOI: 10.1038/sj.onc.1204626] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2001] [Revised: 04/26/2001] [Accepted: 05/08/2001] [Indexed: 11/08/2022]
Abstract
Chronic hepatitis B virus (HBV) infection is known to be one of the major causes in the development of hepatocellular carcinoma (HCC), although the biomolecular mechanism(s) involved remain unclear. To identify the cellular gene(s) involved in HBV-associated hepatocarcinogenesis, we used the mRNA differential display method and examined three paired tumor and nontumor tissues, all of which had chromosomally integrated HBV-DNA through chronic infection. Using 240 different combinations of three one-base anchored oligo-dT primers and 80 arbitrary 13-mers, genes decreased or increased in expression more than twofold between each tumor tissue and its paired nontumor tissue were identified. Twenty-nine known genes and four novel genes were differentially over-expressed in the HCC tumor tissues. In contrast, 27 known genes and five novel genes were under-expressed in those tumor tissues. The nucleotide sequences of the nine novel gene fragments were determined and their expression patterns were examined in 40 HCC samples. HA61T2, PT18, HG63T1, and HG57T1 were preferentially over-expressed in 32 cases (80%, P<0.001), 24 cases (60%), 23 cases (57.5%) and 22 cases (55%) of the 40 tumor tissues, respectively. There was an increased frequency of HG57T1 over-expression in HCC patients with HBV-positive serology and low serum alpha-feto protein (AFP) levels (P<0.05). DNT10, PT8, PT19, ENT25 and HA6T4 were under-expressed in 26 cases (65%), 23 cases (57.5%), 21 cases (53%), 20 cases (50%) and 18 cases (45%) of the 40 tumor samples, respectively. There was a strong correlation of DNT10 under-expression with high serum AFP level in HCC patients, irrespective of HBV serology (P<0.01). HA6T4 was preferentially under-expressed in HCC tumors in patients with HBV-positive serology and high serum AFP levels (P<0.05). Thus, the functional analyses of the known and novel genes identified in this study should prove valuable to further understand the mechanism(s) of hepatocarcinogenesis.
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MESH Headings
- Base Sequence
- Blotting, Northern
- Carcinoma, Hepatocellular/etiology
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/virology
- Cell Transformation, Neoplastic
- Cell Transformation, Viral
- DNA, Neoplasm/genetics
- DNA, Viral/genetics
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Gene Expression Regulation, Viral
- Genes
- Hepatitis B virus/genetics
- Hepatitis B virus/physiology
- Hepatitis B, Chronic/complications
- Humans
- Liver Neoplasms/etiology
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/virology
- Molecular Sequence Data
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- RNA, Messenger/biosynthesis
- RNA, Neoplasm/biosynthesis
- Sequence Analysis, DNA
- Subtraction Technique
- Viral Proteins/biosynthesis
- Viral Proteins/genetics
- Virus Integration
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Affiliation(s)
- M Y Kim
- Department of Internal Medicine, Division of GI and Hepatology, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Chonju, Chonbuk 561-712, Republic of Korea
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