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Zaruba S, Vishnikin AB, Škrlíková J, Diuzheva A, Ozimaničová I, Gavazov K, Andruch V. A two-in-one device for online monitoring of direct immersion single-drop microextraction: an optical probe as both microdrop holder and measuring cell. RSC Adv 2017. [DOI: 10.1039/c7ra02326j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
For the first time an optical probe is proposed as the microdrop holder and simultaneously the measuring cell in a direct immersion single-drop microextraction (DI-SDME) procedure.
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Affiliation(s)
- Serhii Zaruba
- Department of Analytical Chemistry
- Faculty of Chemistry
- Oles Honchar Dnipropetrovsk National University
- Dnipro
- Ukraine
| | - Andriy B. Vishnikin
- Department of Analytical Chemistry
- Faculty of Chemistry
- Oles Honchar Dnipropetrovsk National University
- Dnipro
- Ukraine
| | - Jana Škrlíková
- Department of Analytical Chemistry
- Faculty of Science
- Pavol Jozef Šafárik University in Košice
- SK-04154 Košice
- Slovak Republic
| | - Alina Diuzheva
- Department of Analytical Chemistry
- Faculty of Science
- Pavol Jozef Šafárik University in Košice
- SK-04154 Košice
- Slovak Republic
| | - Ivana Ozimaničová
- Department of Analytical Chemistry
- Faculty of Science
- Pavol Jozef Šafárik University in Košice
- SK-04154 Košice
- Slovak Republic
| | - Kiril Gavazov
- Faculty of Chemistry
- University of Plovdiv Paisii Hilendarski
- Plovdiv 4000
- Bulgaria
- Faculty of Pharmacy
| | - Vasil Andruch
- Department of Analytical Chemistry
- Faculty of Science
- Pavol Jozef Šafárik University in Košice
- SK-04154 Košice
- Slovak Republic
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2
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Tunca H, Berber AA, Çanakçi K, Tuna M, Yildiz SZ, Aksoy H. Synthesis, characterization, and determination of genotoxic effect of a novel dimeric 8-hydroxyquinoline Cd(II) SCN complex. Drug Chem Toxicol 2016; 40:300-308. [PMID: 27631679 DOI: 10.1080/01480545.2016.1223094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In this study, a Cd(II) complex was synthesized using 8-hydroxyquinoline and thiocyanate as the ligands and structurally characterized with the combination of FTIR, 1H-NMR, 13C-NMR, UV-vis, and MS spectral data. Then, genotoxic effects of the prepared complex were investigated. Genotoxic properties of the dimeric 8-hydroxyquinolinthiocyanatoCd(II) [Cd2(8Q)2(SCN)2] complex synthesized as drug raw material were analyzed in human peripheral blood lymphocytes. Concentrations of 1, 2, 4, 6, and 8 μg/mL [Cd2(8Q)2(SCN)2] were used for 24 and 48 h durations. [Cd2(8Q)2(SCN)2] significantly increased chromosomal aberrations (CAs) at 4, 6, and 8 μg/mL concentrations after a 24- h period and 2 and 4 μg/mL after a 48-h period. [Cd2(8Q)2(SCN)2] significantly decreased the mitotic index (MI) at all concentrations, both at 24 and 48 h. Micronuclei frequency (MN) was not affected by [Cd2(8Q)2(SCN)2] treatment compared with the control. After application for a 48 h period, 6 and 8 μg/mL concentrations showed toxic effects both in chromosomal abnormality and in micronucleus tests. It also decreased the cytokinesis-block proliferation index (CBPI), but this result was statistically significant only at 6 and 8 μg/mL concentrations. In the comet assay (single-cell gel electrophoresis (SCGE)), significant increases in comet tail length, tail moment, and tail intensity were observed at all concentrations. [Cd2(8Q)2(SCN)2] displays clastogenic effect in the concentrations used in human peripheral lymphocytes at chromosomal abnormality, micronucleus tests, and cytokinesis-block proliferation index parameters. Further studies should be conducted in other test systems to evaluate the complete genotoxic potential of [Cd2(8Q)2(SCN)2].
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Affiliation(s)
- Hatice Tunca
- a Department of Biology , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey and
| | - Ahmet Ali Berber
- a Department of Biology , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey and
| | - Kubra Çanakçi
- b Department of Chemistry , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey
| | - Murat Tuna
- b Department of Chemistry , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey
| | - Salih Zeki Yildiz
- b Department of Chemistry , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey
| | - Hüseyin Aksoy
- a Department of Biology , Faculty of Arts and Sciences, Sakarya University , Esentepe Campus , Sakarya , Turkey and
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3
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Potentiometric Anion Selectivity and Analytical Applications of Polymer Membrane Electrodes Based on Novel Mn(III)- and Mn(IV)-Salophen Complexes. ELECTROANAL 2016. [DOI: 10.1002/elan.201600335] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Chandra S, Hooda S, Tomar PK, Malik A, Kumar A, Malik S, Gautam S. Synthesis and characterization of bis nitrato[4-hydroxyacetophenonesemicarbazone) nickel(II) complex as ionophore for thiocyanate-selective electrode. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:18-27. [PMID: 26952393 DOI: 10.1016/j.msec.2015.12.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 10/11/2015] [Accepted: 12/28/2015] [Indexed: 11/26/2022]
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5
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Synergistic effect of bimetallic Ag@Cu nanorods modified electrode for enhanced electrochemical sensing of thiocyanate ions. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2166-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Rapid and reproducible analysis of thiocyanate in real human serum and saliva using a droplet SERS-microfluidic chip. Biosens Bioelectron 2014; 62:13-8. [DOI: 10.1016/j.bios.2014.06.026] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/03/2014] [Accepted: 06/10/2014] [Indexed: 01/02/2023]
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7
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Ma C, Jiang Y, Yang X, Wang C, Li H, Dong F, Yang B, Yu K, Lin Q. Centrifugation-induced water-tunable photonic colloidal crystals with narrow diffraction bandwidth and highly sensitive detection of SCN-. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1990-6. [PMID: 23448168 DOI: 10.1021/am302804b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Novel opal hydrogels with water-tunable photonic bandgap (PBG) exhibiting responses to external stimuli were self-assembled from polystyrene-co-poly(N,N-dimethylacrylamide) (PS-co-PDMAA) microspheres. The polymeric microspheres with narrow size distribution were successfully prepared in water, consisting of two regions. The inner region is rich in PS which is hard and hydrophobic; the outer region is rich in PDMAA which is soft and hydrophilic. The self-assembly of the PS-co-PDMAA hydrogel microspheres is ready induced by centrifugation and resulted in highly ordered three-dimensional (3D) photonic colloidal crystals (PCCs). With an increase of the amount of water, the PBG of the opal hydrogels shifted from the visible to near-infrared region of the electromagnetic spectrum. The maximum shift of diffraction peak positions could be larger than 500 nm with narrow full width at half maximum (FWHM) in the range of 20 to 40 nm only. The change in color was visible to the naked eye. The remarkable sensitivity to water of the lattice spacing of the opal hydrogels was repeatable after centrifugation. These observations are attributed to a reproducible degree of hydration of the hydrophilic outer region of the polymeric microspheres. Furthermore, the diffraction of the opal hydrogels was particularly sensitive to the presence of thiocyanate (SCN(-)) ions. The interaction between SCN(-) ions and DMAA repeat units is argued to block hydrogen bonds between DMAA and water molecules. Our PS-co-PDMAA opal hydrogels could be a practical system for diffraction-based detections.
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Affiliation(s)
- Cheng Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
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8
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Novel thiocyanate ion-selective electrodes based on a copper(II) complex of p-hydroxyacetophenone thiosemicarbazone as a carrier. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-012-0884-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Beheshti SS, Sohbat F, Amini MK. A manganese porphyrin-based sensor for flow-injection potentiometric determination of thiocyanate. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424610001830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Metalloporphyrin-based ion-selective electrodes for flow-injection potentiometric determination of thiocyanate are described. The detection system is based on a coated glassy carbon electrode membrane sensor incorporating 5,10,15,20-tetraphenyl-21H,23H-porphine manganese(III) chloride as the active ingredient. The influences of the membrane composition, pH, and the effects of flow-injection parameters on the response of the system were investigated. At the optimized flow-injection potentiometric conditions, the sensor exhibited a Nernstian slope of -58.0 mV per decade of thiocyanate activity over the range 4.2 × 10-7–7.6 × 10-2M , where 50 μL of each sample solution was injected into the carrier solution. The detection limit of thiocyanate in the FIP mode was 4.2 × 10-7M . The selectivity of the flow-injection potentiometric system with respect to several common inorganic and organic anions was superior to that of the batch mode using the same sensor and similar operating conditions. The sensor was applied to the determination of thiocyanate in urine samples.
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Affiliation(s)
- Saeed S. Beheshti
- Department of Chemistry, University of Isfahan, Isfahan 81744-73441, I.R. Iran
| | - Fatemeh Sohbat
- Department of Chemistry, University of Isfahan, Isfahan 81744-73441, I.R. Iran
| | - Mohammad K. Amini
- Department of Chemistry, University of Isfahan, Isfahan 81744-73441, I.R. Iran
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Determination of thiocyanate ions at nanolevel in real samples using coated graphite electrode based on synthesised macrocyclic Zn(II) complex. Anal Bioanal Chem 2011; 400:2261-9. [DOI: 10.1007/s00216-011-4930-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 03/03/2011] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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11
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Sancy M, Pavez J, Gulppi MA, de Mattos IL, Arratia-Perez R, Linares-Flores C, Paez M, Nyokong T, Zagal JH. Optimizing the Electrocatalytic Activity of Surface Confined Co Macrocyclics for the Electrooxidation of Thiocyanate at pH 4. ELECTROANAL 2011. [DOI: 10.1002/elan.201000599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Tzanavaras PD. Automated Determination of Captopril by Flow and Sequential Injection Analysis: A Review. ANAL LETT 2011. [DOI: 10.1080/00032719.2010.500792] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Logue BA, Hinkens DM, Baskin SI, Rockwood GA. The Analysis of Cyanide and its Breakdown Products in Biological Samples. Crit Rev Anal Chem 2010. [DOI: 10.1080/10408340903535315] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Mukherjee A, Chakrabarty R, Ng SW, Patra GK. The syntheses, characterizations, X-ray crystal structures and properties of Cu(I) complexes of a bis-bidentate schiff base ligand. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Özkütük EB, Özalp E, Ersöz A, Açıkkalp E, Say R. Thiocyanate separation by imprinted polymeric systems. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0319-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Wang Z, Zhang J, Tian Z, Wang Z, Li Y, Liang S, Cui L, Zhang L, Zhang H, Yang B. Organic–inorganic hybrid photonic hydrogels as a colorful platform for visual detection of SCN−. Chem Commun (Camb) 2010; 46:8636-8. [DOI: 10.1039/c0cc03533e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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18
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Bashammakh AS, Bahaffi SO, Al-Sibaai AA, Al-Wael HO, El-Shahawi MS. Extractive liquid–liquid spectrophotometric procedure for the determination of thiocyanate ions employing the ion pair reagent amiloride monohydrochloride. Anal Chim Acta 2007; 592:16-23. [PMID: 17499065 DOI: 10.1016/j.aca.2007.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 04/02/2007] [Accepted: 04/04/2007] [Indexed: 10/23/2022]
Abstract
An accurate, inexpensive and less laborious liquid-liquid extractive spectrophotometric procedure for the determination of thiocyanate ions in aqueous media has been developed. The method has been based upon the formation of a yellow colored complex ion associate of the ion-pairing reagent 1-(3, 5-diamino-6-chloropyrazinecarboxyl) guanidine hydrochloride monohydrate, namely amiloride hydrochloride, DPG+.Cl- and the thiocyanate ions in aqueous media containing HNO3 (0.5 mol L(-1)) and subsequent extraction with 4-methyl-2-pentanone. The absorption electronic spectrum of the ion associate showed one well-defined peak at lambda(max) 366 nm. The stoichiometric mole ratio of DPG+.Cl- to the thiocyanate ions is 1:1. The effective molar absorptivity (epsilon) of the ion associate at lambda(max) 366 nm is 1.1+/-0.1x10(4) L mol(-1) cm(-1). The extraction constants (K(d), K(ex), and beta) enabled a simple and convenient use of the developed binary ion associate for the extractive spectrophotometric determination of traces of thiocyanate ions in the aqueous media. Beer's law and Ringbom's plots are obeyed in the concentration range 0.05-10 and 0.1-7 microg mL(-1) of the thiocyanate ions, respectively with a relative standard deviation of +/-2.3%. The calculated lower limits of detection (LOD) and quantitation (LOQ) of the developed procedure for the thiocyanate ions were found equal to 0.02 and 0.066 microg mL(-1), respectively. The developed method has been applied for the determination of trace amounts of thiocyanate ions in tap-, waste- and natural water samples and compared successfully with the reported methods at the 95% confidence level. The proposed method was also applied successfully for the determination of thiocyanate ions in saliva samples.
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Affiliation(s)
- A S Bashammakh
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
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Yang P, Wei W, Tao C. Determination of trace thiocyanate with nano-silver coated multi-walled carbon nanotubes modified glassy carbon electrode. Anal Chim Acta 2007; 585:331-6. [PMID: 17386682 DOI: 10.1016/j.aca.2007.01.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2006] [Revised: 01/02/2007] [Accepted: 01/11/2007] [Indexed: 10/23/2022]
Abstract
Novel nano-silver coated multi-walled carbon nanotube composites were prepared and used to fabricate a modified electrode. The application of the nano-silver coated multi-walled carbon nanotube composites modified electrode for determination of trace thiocyanate is demonstrated for the first time. The influence of substrate, pH and interference of coexisting substances was investigated for response properties of the electrode. There was a linear relationship at the range 2.5 x 10(-9) to 5 x 10(-8) mol L(-1) and 5 x 10(-8) to 1 x 10(-6) mol L(-1) of thiocyanate with the decrement of anodic DPV peak currents. The limit of detection was 1 x 10(-9) mol L(-1)(S/N=3). The constructed electrode showed excellent reproducibility and stability. Actual urine and saliva samples of smoker and non-smoker were analyzed and satisfactory results were obtained. This method provides a new way to construct any electrode for biological and environmental analysis.
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Affiliation(s)
- Pinghua Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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Ghaedi M, Parham H, Moghadam M, Mortazavi K, Soylak M. Solid Phase Extraction and Spectrophotometric Determination of Trace Amounts of Thiocyanate in Real Samples. ACTA ACUST UNITED AC 2006; 96:689-96. [PMID: 17217173 DOI: 10.1002/adic.200690071] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A simple, selective and rapid method for solid phase extraction and spectrophotometric determination of thiocyanate using a manganese (III) tetrakis (p-sulfonatophenyl) porphyrin, [Mn (TPPS) OAC] bound to Amberlite IR-400 has been developed. The influence of pH, amount of solid phase, sample matrix, type and amount of eluting agent and flow rates i.e. variables affecting the efficiency of the extraction system were evaluated and conditions of the sample, eluting solution and active phase were optimized. The maximal capacity was found to be as 1.16 microg mL(-1) for 1200 mL. Thiocyanate ions can be eluted quantitatively with 8 mL 0.3 M ferric chloride. The enrichment factor was 150. The linear range of the determination is between 0.4-2.0 microg mL(-1) for preconcentration method with a limit of detection of 2.8 ng mL(-1). The method has been successfully applied for determination of trace amounts of thiocyanate in tap water, saliva sample and a synthetic mixture.
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Affiliation(s)
- Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75914-353, Iran.
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Mazloum Ardakani M, Jamshidpour M, Naeimi H, Moradi L. Thiocyanate Ion-selective PVC Membrane Electrode Based on N,N'-Ethylene-bis(4-methylsalicylidineiminato)nickel(II). ANAL SCI 2006; 22:1221-6. [PMID: 16966813 DOI: 10.2116/analsci.22.1221] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A highly selective poly(vinyl chloride) (PVC) membrane electrode based on an N,N'-ethylene-bis(4-methyl-salicylidineiminato) nickel(II) [Ni(EBMSI)] complex as a carrier for a thiocyanate-selective electrode is reported. The influences of the membrane composition, pH and possible interfering anions were investigated based on the response properties of the electrode. The electrode exhibited a good Nernstian slope of -58.9 +/- 0.7 mV decade(-1), over a wide pH range of 3.5 - 8.5 and a linear range of 1.0 x 10(-6) - 1.0 x 10(-1) M for thiocyanate. The detection limit of electrode was 3.1 x 10(-7) M SCN(-). The selectivity coefficients determined by a fixed interference method (FIM) indicate that a good discriminating ability towards the SCN- ion compared to other anions. The proposed sensor had a fast response time of about 5 - 15 s and could be used for at least 3 months without any considerable divergence in the potential. It was applied as an indicator electrode in the titration of thiocyanate with Ag+ and in the potentiometric determination of thiocyanate in saliva and urine samples.
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Shahrokhian S, Jannatrezvani MJ, Khajehsharifi H. Rhodium(II) Phthalocyanine as a Selective Carrier in Thiocyanate‐Selective Membrane Electrode. ANAL LETT 2005. [DOI: 10.1081/al-200060865] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Valdés M, Díaz-García M. Determination of Thiocyanate within Physiological Fluids and Environmental Samples: Current Practice and Future Trends. Crit Rev Anal Chem 2004. [DOI: 10.1080/10408340490273726] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Amini M, Rafi A, Ghaedi M, Habibi M, Zohory M. Bis(2-mercaptobenzoxazolato)mercury(II) and bis(2-pyridinethiolato)mercury(II) complexes as carriers for thiocyanate selective electrodes. Microchem J 2003. [DOI: 10.1016/s0026-265x(03)00091-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Simultaneous determination of oxalate, thiosulfate, and thiocyanate in urine by ion-exclusion chromatography with electrochemical detection. Chromatographia 2002. [DOI: 10.1007/bf02492008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Glatz Z, Nováková S, Sterbová H. Analysis of thiocyanate in biological fluids by capillary zone electrophoresis. J Chromatogr A 2001; 916:273-7. [PMID: 11382301 DOI: 10.1016/s0021-9673(00)01238-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new sensitive and simple method has been developed for the determination of thiocyanate in human serum, urine and saliva. The determinations were performed in a fused-silica capillary [64.5 cm (56 cm effective length) x 75 microm] using 0.1 M beta-alanine-HCl (pH 3.50) as a background electrolyte, separation voltage 18 kV (negative polarity), temperature of capillary 25 degrees C and direct detection at 200 nm. Serum samples were 10-times diluted with deionised water and deproteinised with acetonitrile in the ratio 1:2. Urine and saliva samples need only 20-fold dilution with deionised water. The proposed method was successfully applied to the determination of thiocyanate in various human serum, saliva and urine samples.
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Affiliation(s)
- Z Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic.
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Ghasemi J, Amini R, Afkhami A. Kinetic spectrophotometric determination of thiocyanate based on its inhibitory effect on the oxidation of methyl red by bromate. ANAL SCI 2001; 17:435-7. [PMID: 11990623 DOI: 10.2116/analsci.17.435] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A kinetic spectrophotometric method for measuring thiocyanate is described. The proposed method is based on the inhibitory effect of thiocyanate on the oxidation of Methyl Red by bromate in the presence of nitrite, which was monitored at 520 nm. The variables affecting the rate of the reaction were investigated and the optimum conditions were established. Thiocyanate can be measured in the range of 0.05-1.1 microg ml(-1) with a detection limit of 0.025 microg ml(-1). This method has been used to determine trace thiocyanate in urine and tap water samples.
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Affiliation(s)
- J Ghasemi
- Department of Chemistry, Razi University, Kermanshah, Iran.
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Gong B, Gong G. Fluorimetric method for the determination of thiocyanate with 2′,7′-dichlorofluorescein and iodine1Supported by the educational committee foundation and the Natural science Foundation of Ningxia.1. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(99)00295-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pinillos S, Vicente I, Bernal J, Asensio J. Determination of thiocyanate by carbonyl sulphide (OCS) generation and gas-phase molecular absorption spectrometry. Anal Chim Acta 1996. [DOI: 10.1016/0003-2670(95)00463-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Afkhami A, Bahrami H. Kinetic-Spectrophotometric Determination of Trace Quantities of Thiocyanate by Inhibition of the Redox Reaction of Ferroin with Periodate. ANAL LETT 1995. [DOI: 10.1080/00032719508000356] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Flow-injection analysis: leaving its teen-years and maturing. A personal reminiscence of its conception and early development. Anal Chim Acta 1995. [DOI: 10.1016/0003-2670(94)00199-v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Simultaneous determination of organic and inorganic ultraviolet-absorbing compounds in human saliva by electrostatic ion chromatography. Anal Chim Acta 1994. [DOI: 10.1016/0003-2670(94)80073-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hu W, Haraguchi H. Determination of Monovalent Inorganic Anions in Human Saliva by Ion Chromatography Using Microcolumn Coated with Micellar Zwitterionic Bile Acid Derivative. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1993. [DOI: 10.1246/bcsj.66.1420] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Combining flow injection analysis with a biosensor is a novel biosensing process which has allowed speedy and accurate analysis. Diagnostic analysis is the most important application for biosensing flow injection analysis, but other applications include bioprocess monitoring, analysis of food and agricultural products, as well as environmental analysis. In addition, the analysis of compounds, such as explosives and abused drugs, and monitoring of Salmonella, the microorganism that causes food poisoning, have been reported.
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Affiliation(s)
- C Y Chen
- National Taiwan University, Tapei
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