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Pourbakhshi Y, Heidari M, Yahaei E, Ghiyasi S, Ebrahimi-Najafabadi H, Bozorgzadeh E. Dispersive Liquid–Liquid Microextraction Followed by Solidified Floating Organic Drop for Hexavalent Chromium Determination: a Method for Occupational and Environmental Exposure Monitoring for Heavy Metals. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821060083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lisboa TP, Mimura AMS, da Silva JCJ, de Sousa RA. Chromium Levels in Tobacco, Filter and Ash of Illicit Brands Cigarettes Marketed in Brazil. J Anal Toxicol 2020; 44:514-520. [PMID: 31984423 DOI: 10.1093/jat/bkz106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/24/2019] [Accepted: 10/06/2019] [Indexed: 01/02/2023] Open
Abstract
Smoking is a public health problem and an important source of exposure to toxic metals. This work describes an efficient analytical method comparable to the ones based on atomic emission techniques for the determination of chromium in different constituent parts of cigarette samples (tobacco, filters and ashes) using electrothermal vaporization-atomic absorption spectrometry. The method was evaluated using 12 samples, and the results showed recovery values between 83 and 107%. The accuracy was also evaluated using a reference sample of tomato leaves (NIST SRM 1573a), which proved the efficiency of the method. The limits of detection of the developed method were 20.4, 75.8 and 80.7 ng g-1 for tobacco, filter and cigarette ash samples, respectively. The average chromium values found for the analyzed samples were in the range of 0.96 to 3.85 and from 0.32 to 0.80 μg/cigarette for tobacco and ashes, respectively. For most pre-burn and post-burn filter samples, the values of chromium concentration remained below limits of detection. The developed method presented adequate results about precision and accuracy, demonstrating its applicability in the determination of chromium in cigarette samples.
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Affiliation(s)
- Thalles Pedrosa Lisboa
- Grupo Baccan de Química Analítica, Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Aparecida Maria Simões Mimura
- Colegiado de Licenciatura em Química, Universidade Federal do Vale do São Francisco, Campus Serra da Capivara, São Raimundo Nonato, PI, Brazil
| | - Julio Cesar Jose da Silva
- Grupo Baccan de Química Analítica, Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Rafael Arromba de Sousa
- Grupo Baccan de Química Analítica, Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
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Dokpikul N, Chaiyasith WC, Sananmuang R, Ampiah-Bonney RJ. Surfactant-assisted emulsification dispersive liquid-liquid microextraction using 2-thenoyltrifluoroacetone as a chelating agent coupled with electrothermal atomic absorption spectrometry for the speciation of chromium in water and rice samples. Food Chem 2018; 246:379-385. [DOI: 10.1016/j.foodchem.2017.11.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/11/2017] [Accepted: 11/13/2017] [Indexed: 11/15/2022]
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4
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Ezoddin M, Abdi K, Esmaeili N. Ultrasound enhanced air-assisted surfactant liquid–liquid microextraction based on the solidification of an organic droplet for the determination of chromium in water, air and biological samples. Microchem J 2016. [DOI: 10.1016/j.microc.2016.07.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Glatz Z. On-capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis. Electrophoresis 2014; 36:744-63. [DOI: 10.1002/elps.201400449] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 10/09/2014] [Accepted: 10/11/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Zdeněk Glatz
- Department of Biochemistry; Faculty of Science and CEITEC; Masaryk University; Brno Czech Republic
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Rojano-Delgado AM, Luque de Castro MD. Capillary electrophoresis and herbicide analysis: Present and future perspectives. Electrophoresis 2014; 35:2509-19. [DOI: 10.1002/elps.201300556] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 04/16/2014] [Accepted: 04/23/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Antonia María Rojano-Delgado
- Department of Agricultural Chemistry and Soil Science; Córdoba Spain
- Campus of Rabanales, and Agroalimentary Excellence Campus; ceiA3, University of Córdoba; Córdoba Spain
| | - María D. Luque de Castro
- Department of Analytical Chemistry; Córdoba Spain
- Campus of Rabanales, and Agroalimentary Excellence Campus; ceiA3, University of Córdoba; Córdoba Spain
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López-García I, Briceño M, Vicente-Martínez Y, Hernández-Córdoba M. Ultrasound-assisted dispersive liquid–liquid microextraction for the speciation of traces of chromium using electrothermal atomic absorption spectrometry. Talanta 2013; 115:166-71. [DOI: 10.1016/j.talanta.2013.04.052] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 04/11/2013] [Accepted: 04/22/2013] [Indexed: 11/24/2022]
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Timerbaev AR. Element speciation analysis using capillary electrophoresis: twenty years of development and applications. Chem Rev 2012; 113:778-812. [PMID: 23057472 DOI: 10.1021/cr300199v] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, 119991 Moscow, Russian Federation.
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Hai X, Yang BF, Van Schepdael A. Recent developments and applications of EMMA in enzymatic and derivatization reactions. Electrophoresis 2011; 33:211-27. [DOI: 10.1002/elps.201100366] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 09/16/2011] [Accepted: 09/17/2011] [Indexed: 12/12/2022]
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Lu J, Tian J, Wu H, Zhao C. Speciation Determination of Chromium(VI) and Chromium(III) in Soil Samples after Cloud Point Extraction. ANAL LETT 2009. [DOI: 10.1080/00032710902993829] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Monasterio RP, Lascalea GE, Martínez LD, Wuilloud RG. Determination of Cr(VI) and Cr(III) species in parenteral solutions using a nanostructured material packed-microcolumn and electrothermal atomic absorption spectrometry. J Trace Elem Med Biol 2009; 23:157-66. [PMID: 19486825 DOI: 10.1016/j.jtemb.2009.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Revised: 03/06/2009] [Accepted: 03/18/2009] [Indexed: 11/17/2022]
Abstract
A sequential on-line preconcentration and separation system for Cr(VI) and Cr(III) species determination was developed in this work. For this purpose, a microcolumn filled with nanostructured alpha-alumina was used for on-line retention of Cr species in a flow-injection system. The method involves the selective elution of Cr(VI) with concentrated ammonia and Cr(III) with 1mol L(-1) nitric acid for sequential injection into an electrothermal atomic absorption spectrometer (ETAAS). Analytical parameters including pH, eluent type, flow rates of sample and eluent, interfering effects, etc., were optimized. The preconcentration factors for Cr(VI) and Cr(III) were 41 and 18, respectively. The limit of detection (LOD) was 1.9 ng L(-1) for Cr(VI) and 6.1 ng L(-1) for Cr(III). The calibration graph was linear with a correlation coefficient of 0.999. The relative standard deviation (RSD) was 8.6% for Cr(VI) and 6.1% for Cr(III) (c = 10 microg L(-1), n=10, sample volume = 25 mL). Verification of the accuracy was carried out by analysis of a standard reference material (NIST SRM 1643e "Trace elements in natural water") with a reported Cr content of 20.40+/-0.24 microg L(-1). Using the proposed methodology the total Cr content, computed as sum of Cr(III) and Cr(VI), in this SRM was 20.26+/-0.96 microg L(-1). The method was successfully applied to the determination of Cr(VI) and Cr(III) species in parenteral solutions. Concentration of Cr(III) species was found to be in the range of 0.29-3.62 microg L(-1), while Cr(VI) species was not detected in the samples under study.
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Affiliation(s)
- Romina P Monasterio
- Laboratory of Environmental Research and Services of Mendoza (LISAMEN), (CCT - CONICET - Mendoza), Av. Ruiz Leal S/N Parque General San Martín, CC. 131, M 5502 IRA Mendoza, Argentina
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Zhang J, Hoogmartens J, Van Schepdael A. Advances in CE-mediated microanalysis: An update. Electrophoresis 2008; 29:56-65. [DOI: 10.1002/elps.200700475] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Timerbaev AR. Recent trends in CE of inorganic ions: From individual to multiple elemental species analysis. Electrophoresis 2007; 28:3420-35. [PMID: 17768723 DOI: 10.1002/elps.200600491] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The major methodological developments in CE related to inorganic analysis are overviewed. This is an update to a previous review article by the author (Timerbaev, A. R., Electrophoresis 2004, 25, 4008-4031) and it covers the review work and innovative research papers published between January 2004 and the first part of 2006. As was underlined in that review, a growing interest of analytical community in providing elemental speciation information found a sound response of the CE method developers. Presently, almost every second research paper in the field of interest deals with element species analysis, the use of inductively coupled plasma MS detection and biochemical applications being the topics of utmost research efforts. On the other hand, advances in general methodology traditionally centered on a CE system modernization for improvements in sensitivity and separation selectivity have attracted less attention over the review period. While there is no indication that inorganic ion applications would surpass by the developmental rate the more matured analysis of organic analytes, CE can now be seen as an analytical technique to be before long customary in a number of inorganic analysis arenas.
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Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia.
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Hanrahan G, Montes RE, Pao A, Johnson A, Gomez FA. Implementation of chemometric methodology in ACE: Predictive investigation of protein–ligand binding. Electrophoresis 2007; 28:2853-60. [PMID: 17640087 DOI: 10.1002/elps.200600523] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
An ACE predictive investigation of protein-ligand binding using a highly effective chemometric response surface design technique is presented. Here, K(d) was estimated using one noninteracting standard which relates to changes in the electrophoretic mobility of carbonic anhydrase B (CAB, EC 4.2.1.1) on complexation with the ligand 4-carboxybenzenesulfonamide (CBSA) present in the electrophoresis buffer. Experimental factors including injection time, capillary length, and applied voltage were selected and tested at three levels in a Box-Behnken design. Statistical analysis results were used to create a mathematical model for response surface prediction via contour and surface plots at a given target response (K(d) = 1.19x10(-6) M). As expected, there were a number of predicted solutions that reached our target response based on the significance of each factor at appropriate levels. The adequacy of the model was validated by experimental runs with the predicted model solution (capillary length = 47 cm, voltage = 11 kV, injection time = 0.01 min) presented in detail as an example.
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Affiliation(s)
- Grady Hanrahan
- Department of Chemistry and Biochemistry, California State University, Los Angeles, CA 90032, USA
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Field-amplified sample injection and in-capillary derivatization for capillary electrophoretic analysis of metal ions in local wines. Microchem J 2007. [DOI: 10.1016/j.microc.2007.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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