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Mandlate JS, Henn AS, Mello PA, Flores EMM, Barin JS, Duarte FA. Determination of Cl and S in crude oil by ICP-OES after sample digestion by microwave-induced combustion in disposable vessels. Anal Chim Acta 2023; 1273:341536. [PMID: 37423667 DOI: 10.1016/j.aca.2023.341536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/11/2023]
Abstract
A simple, fast and promising sample preparation method based on microwave-induced combustion in disposable vessels (MIC-DV) was developed for Cl and S determination in crude oil by inductively coupled plasma optical emission spectrometry (ICP-OES). The MIC-DV consists of a new approach of conventional microwave-induced combustion (MIC). For the combustion, crude oil was pipetted on a disk of filter paper and placed on a quartz holder, followed by the addition of igniter solution (40 μL of 10 mol L-1 NH4NO3). The quartz holder was inserted into a commercial 50 mL disposable polypropylene vessel containing the absorbing solution, which was then inserted in an aluminium rotor. The combustion occurs under atmospheric pressure in a domestic microwave oven not compromising the operator's safety. The following parameters of combustion were evaluated: type, concentration and volume of absorbing solution, sample mass and the possibility of performing consecutive combustion cycles. Using MIC-DV, up to 10 mg of crude oil were efficiently digested, using 2.5 mL of ultrapure H2O as absorbing solution. Moreover, up to 5 consecutive combustion cycles were possible without analyte losses, reaching a total sample mass of 50 mg. The MIC-DV method was validated according to Eurachem Guide recommendations. Results obtained for Cl and S by MIC-DV were in agreement with those obtained using conventional MIC, as well as those obtained for S in a certified reference material of crude oil (NIST 2721). Analyte spike recovery experiments were performed and recoveries at three concentration levels ranged from 99 to 101% for Cl and from 95 to 97% for S, indicating a good accuracy. The limit of quantification achieved by ICP-OES after MIC-DV were 73 and 50 μg g-1 for Cl and S respectively, applying 5 consecutive combustion cycles.
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Affiliation(s)
- Jaime S Mandlate
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil; Departamento de Química, Universidade Eduardo Mondlane, Maputo, P.O. Box 252, Mozambique; Centro Regional de Excelência em Estudos de Engenharia e Tecnologia de Petróleo e Gás, Universidade Eduardo Mondlane, P.O. Box 252, Mozambique
| | - Alessandra S Henn
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil; Departamento de Química, Universidade Tecnológica Federal do Paraná, 85884-000, Medianeira, Paraná, Brazil
| | - Paola A Mello
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Juliano S Barin
- Grupo 3i, Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Fabio A Duarte
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil.
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Moraes DPDE, Ferreira DF, Farias CAA, Nehring P, Barcia MT, Cichoski AJ, Barin JS. Solvent-free sonication of blackberries for the anthocyanin enrichment of juices obtained by pressing. AN ACAD BRAS CIENC 2023; 95:e20221106. [PMID: 37646713 DOI: 10.1590/0001-3765202320221106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/27/2023] [Indexed: 09/01/2023] Open
Abstract
An ultrasound pretreatment was used to increase anthocyanins content in blackberry juice. Whole fruits were inserted into a glass vessel without contact with any solvent, sonicated in an ultrasonic bath, and then pressed with a manual juicer. The experimental design showed that 7 min at 65% of ultrasound amplitude increased the anthocyanin content in juices from 31 to 56% for BRS Xingu, Guarani, and Xavante cultivars. Two major anthocyanins, cyanidin-3-glucoside and cyanidin-3-rutinoside were found in higher concentrations for sonicated fruits. Therefore, ultrasonic pretreatment of whole fruits increased the anthocyanins in blackberry juices using a simple, fast, and green approach.
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Affiliation(s)
- Débora P DE Moraes
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Daniele F Ferreira
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Carla Andressa A Farias
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Priscila Nehring
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Milene T Barcia
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Alexandre José Cichoski
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Juliano S Barin
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
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3
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Farias CAA, Moraes DP, Neuenfeldt NH, Zabot GL, Emanuelli T, Barin JS, Ballus CA, Barcia MT. Microwave hydrodiffusion and gravity model with a unique hydration strategy for exhaustive extraction of anthocyanins from strawberries and raspberries. Food Chem 2022; 383:132446. [PMID: 35202925 DOI: 10.1016/j.foodchem.2022.132446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 02/03/2022] [Accepted: 02/10/2022] [Indexed: 11/04/2022]
Abstract
This study aimed to verify if microwave hydrodiffusion and gravity (MHG) could efficiently extract anthocyanins from strawberries and raspberries with low environmental impact and costs. Our findings revealed that it was possible to extract 69 and 64% anthocyanins from the strawberries and raspberries in a single extraction step, respectively. When the co-product (product remaining after extracting in natura fruits) was hydrated with green solvents and subjected to re-extraction, it was possible to exhaustively extract the anthocyanins from both fruits. Using the Green Analytical Procedure Index (GAPI), the MHG proved to cause low environmental impact due to the solvents used, enabling the reuse of the co-product for food and pharmaceutical products application. Moreover, the MHG was economically viable, and the sample pretreated with distilled water was the most indicated re-extraction method. The MHG process proved to be exhaustive for strawberry and raspberry anthocyanins, thus demonstrating to be an excellent alternative for sustainable extraction.
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Affiliation(s)
- Carla A A Farias
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Débora P Moraes
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Naiara H Neuenfeldt
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Giovani L Zabot
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria (UFSM), Cachoeira do Sul, RS, Brazil
| | - Tatiana Emanuelli
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Juliano S Barin
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Cristiano A Ballus
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Milene T Barcia
- Department of Technology and Food Science, Center for Agrarian Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil.
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Moraes DP, Farias CAA, Barin JS, Ballus CA, Barcia MT. Application of Microwave Hydrodiffusion and Gravity for Phenolic Compounds Extraction from Fruits. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02806-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Waechter SR, Bizzi CA, Pedrotti MF, Barin JS, Duarte FA. Dried Blood Spot and Microwave-Induced Combustion in Disposable Vessels: A Successful Combination for Halogen Determination. BCSJ 2021. [DOI: 10.1246/bcsj.20210174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Samuel R. Waechter
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Cezar A. Bizzi
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Matheus F. Pedrotti
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, 97550-000, Feliz, RS, Brazil
| | - Juliano S. Barin
- Departamento de Tecnologia e Ciência de Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Fabio A. Duarte
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
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Confortin TC, Todero I, Luft L, Schmaltz S, Ferreira DF, Barin JS, Mazutti MA, Zabot GL, Tres MV. Extraction of bioactive compounds from Senecio brasiliensis using emergent technologies. 3 Biotech 2021; 11:284. [PMID: 34094803 DOI: 10.1007/s13205-021-02845-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 05/11/2021] [Indexed: 11/25/2022] Open
Abstract
Several plant species synthesize biologically active secondary metabolites. Pyrrolizidine alkaloids are a large group of biotoxins produced by thousands of plant species to protect against the attack of insects and herbivores, but they are highly toxic for humans and animals. In this study, extracts from the aerial part of Senecio brasiliensis were obtained using different technologies: ultrasound-assisted extraction (UAE), pressurized liquid extraction (PLE), and microwave hydrodiffusion and gravity (MHG). The study aimed to evaluate the effectiveness of these technologies for the extraction of chemical compounds found in this plant, focusing on two pyrrolizidine alkaloids: integerrimine and senecionine. Influential parameters on yield and chemical composition were also evaluated: for UAE and MHG, temperature and pressure; for PLE, temperature, and percentage of ethanol. All the extraction techniques were efficient for the extraction of integerrimine and senecionine. The UAE and PLE stood out for the higher yields and number of compounds. The PLE presented a maximum yield of 18.63% for the matrix leaf and the UAE a maximum yield of 11.82% for the same matrix. These two techniques also stood out in terms of the number of compounds, once 36 different compounds were found via PLE and 17 via UAE. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02845-1.
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Affiliation(s)
- Tássia C Confortin
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040 Sete de Setembro st., Center DC, Cachoeira do Sul, RS 96508-010 Brazil
| | - Izelmar Todero
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Luciana Luft
- Department of Chemical Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Silvana Schmaltz
- Department of Chemical Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Daniele F Ferreira
- Department of Food Science and Technology, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Juliano S Barin
- Department of Food Science and Technology, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Marcio A Mazutti
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria, 97105-900 Brazil
| | - Giovani L Zabot
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040 Sete de Setembro st., Center DC, Cachoeira do Sul, RS 96508-010 Brazil
| | - Marcus V Tres
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040 Sete de Setembro st., Center DC, Cachoeira do Sul, RS 96508-010 Brazil
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Waechter SR, Vecchia PD, Barin JS, Flores EMM, Duarte FA. Microwave-based strategies for sample preparation and halogen determination in blood using ICP-MS. Talanta 2021; 226:122157. [PMID: 33676704 DOI: 10.1016/j.talanta.2021.122157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 10/22/2022]
Abstract
In this work, two microwave-assisted sample preparation methods based on combustion and ultraviolet digestion for futher determination of Br, Cl, and I in blood by inductively coupled plasma mass spectrometry were proposed. For microwave-induced combustion (MIC), blood was spotted on square pieces of Munktell TFN paper, and water and diluted NH4OH were evaluated as absorbing solutions. The stability of the analytes in the spotted blood was also evaluated. During 90 days, no changes of halogen content were observed for samples (with and without anticoagulant) on paper stored in a desiccator at 20 ± 5 °C. Whole blood was also digested by microwave-assisted ultraviolet digestion (MAD-UV). Some parameters as the volume of HNO3 solution, the influence of H2O2, and the effect of UV radiation were investigated. The interferences caused by C and K on halogen determination were carefully investigated. The results for MIC and MAD-UV and Br, Cl and I determination by ICP-MS presented no difference. The accuracy of MIC and MAD-UV was also evaluated by analyte spike with reference solutions of Br, Cl and I using inorganic species and also organic I standard (T4-levothyroxine). For both methods, recoveries were 94 and 108% for Br, 96 and 103% for Cl, and 104 and 97% for I. In case of organic I, recoveries were 99 and 111% for MIC and MAD-UV, respectively. The limits of quantification for MIC and MAD-UV after ICP-MS determination were 0.06 and 0.04 μg g-1 for Br, 14 and 30 μg g-1 for Cl and 12 and 8 ng g-1 for I, respectively. The proposed methods provide a suitable digestion approach, assuring safety and high digestion efficiency for further halogen determination in blood, with the possibility to use in clinical analysis.
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Affiliation(s)
- Samuel R Waechter
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Paula Dalla Vecchia
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência de Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Fabio A Duarte
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil.
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Moraes DP, Machado ML, Farias CAA, Barin JS, Zabot GL, Lozano-Sánchez J, Ferreira DF, Vizzotto M, Leyva-Jimenez FJ, Da Silveira TL, Ries EF, Barcia MT. Effect of Microwave Hydrodiffusion and Gravity on the Extraction of Phenolic Compounds and Antioxidant Properties of Blackberries (Rubus spp.): Scale-Up Extraction. FOOD BIOPROCESS TECH 2020. [DOI: 10.1007/s11947-020-02557-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Silva JS, Diehl LO, Picoloto RS, Flores EMM, Mesko MF, Barin JS, Duarte FA. A solid sampling approach for direct determination of Cl and S in flour by an elemental analyzer. Food Chem 2020; 344:128671. [PMID: 33261997 DOI: 10.1016/j.foodchem.2020.128671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/30/2020] [Accepted: 11/14/2020] [Indexed: 11/25/2022]
Abstract
Direct analysis of flour was proposed for the determination of Cl and S by an elemental analyzer for the first time. The main operational conditions of the direct solid sampling elemental analysis (DSS-EA) were optimized and calibrated by standard solutions, rather than by certified reference material (CRM). Accuracy was evaluated by the analysis of CRM of rice flour and by comparison with analyte determination by independent techniques, i.e., ion chromatography and inductively coupled plasma optical emission spectrometry; both were carried out after microwave-induced combustion. Sample mass from 0.5 to 260 mg was used and limits of quantification of 1.2 µg g-1 for Cl and 0.2 µg g-1 for S were achieved. Wheat, whole wheat, potato and corn flour were analyzed by DSS-EA. Concentrations of Cl and S ranged from 4.8 to 685 µg g-1 and from 13 to 1328 µg g-1, respectively.
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Affiliation(s)
- Jussiane S Silva
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Lisarb O Diehl
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Rochele S Picoloto
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Marcia F Mesko
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Fabio A Duarte
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Schlosser KC, Oliveira AS, Fagundes MB, Wagner R, Mello RO, Barin JS, Silva FEBDA. A green method for determination of ethanol in homeopathic medicines using thermal infrared enthalpimetry. AN ACAD BRAS CIENC 2020; 92:e20181307. [PMID: 33053105 DOI: 10.1590/0001-3765202020181307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 07/03/2019] [Indexed: 11/22/2022] Open
Abstract
In this work, a simple and fast method is proposed for the determination of ethanol in homeopathic medicines using thermal infrared enthalpimetry (TIE). Samples containing alcohol in a wide concentration range (from 5% to 95% v/v) were used. Purified water or absolute ethanol was added directly into homeopathic medicine and increase of temperature was monitored using an infrared camera. Total volume, stirring speed and dispensing rate of solutions were the most significant parameters studied for method optimization. A response surface methodology (RSM) was used for optimization of the experimental conditions. The method was validated in the following parameters: selectivity, linearity, linear range, precision (repeatability and intermediate precision), limit of detection and quantification, accuracy and robustness. Linear range was obtained from 4% to 55% (ethanol, v/v). The proposed method showed accuracy in agreement with the conventional one. The proposed method it was demonstrated a good alternative for determination of ethanol in homeopathic medicines, presenting low cost, fast analysis and agreement with the principles of green analytical chemistry.
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Affiliation(s)
- Karolina C Schlosser
- Programa de Pós-graduação em Ciências Farmacêuticas/PPGCF, Universidade Federal do Pampa, Campus Uruguaiana, Prédio 700, Br 472, Km 585, Caixa Postal 18, 97500-220 Uruguaiana, RS, Brazil
| | - Alessandra S Oliveira
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência de Alimentos/DTCA, Centro de Ciências Rurais/ CCR, Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Mariane B Fagundes
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência de Alimentos/DTCA, Centro de Ciências Rurais/ CCR, Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Roger Wagner
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência de Alimentos/DTCA, Centro de Ciências Rurais/ CCR, Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Renius O Mello
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência de Alimentos/DTCA, Centro de Ciências Rurais/ CCR, Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Juliano S Barin
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência de Alimentos/DTCA, Centro de Ciências Rurais/ CCR, Av. Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Fabiana E B DA Silva
- Programa de Pós-graduação em Ciências Farmacêuticas/PPGCF, Universidade Federal do Pampa, Campus Uruguaiana, Prédio 700, Br 472, Km 585, Caixa Postal 18, 97500-220 Uruguaiana, RS, Brazil
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Severo IA, Deprá MC, Dias RR, Barin JS, de Menezes CR, Wagner R, Zepka LQ, Jacob-Lopes E. Bio-combustion of petroleum coke: The process integration with photobioreactors. Part II – Sustainability metrics and bioeconomy. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2019.115412] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Alessio KO, Voss M, Flores EMM, Costa AB, Duarte FA, Barin JS. Infrared thermal imaging combined with paper microzone plates and natural reagent extracts for simple, fast, and green enthalpimetric analysis. Talanta 2019; 204:266-271. [PMID: 31357292 DOI: 10.1016/j.talanta.2019.05.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 04/25/2019] [Accepted: 05/21/2019] [Indexed: 12/01/2022]
Abstract
Paper microzone plates and thermal infrared enthalpimetry (TIE) were combined with potato juice as natural reagent extract to perform the determination of hydrogen peroxide in pharmaceutical, bleaching, and toiletry products. A multichannel pipette was used for reagent addition simultaneously in multiple zones of paper devices, and the temperature rise was determined using an infrared camera. In order to provide suitable measurements, some parameters were optimized such as pH, volume of reagents, and stability of the extract. Results for the hydrogen peroxide were compared with those obtained using methods from official compendia (United States Pharmacopeia and ASTM D2180-17), with agreements ranging from 96 to 103%. The green analytical procedure index was used to compare the greenness of the proposed method with official ones, with clear advantages for TIE. Only microliters of samples and natural reagent extracts were required for analysis, and it was found that waste generation could be greatly reduced. After analysis, the paper device could be directly disposed since the final products of the reaction were O2 and water. According to these features, the proposed method could be considered a promising alternative to routine analysis in agreement with green analytical chemistry principles.
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Affiliation(s)
- Keiti O Alessio
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil; Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Monica Voss
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Adilson B Costa
- Grupo de Pesquisa em Quimiometria - Programa de Pós-Graduação em Sistemas e Processos Industriais, Universidade de Santa Cruz do Sul, 96815-900, Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Fabio A Duarte
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900, Santa Maria, Rio Grande do Sul, Brazil.
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Ferreira DF, Barin JS, Binello A, Veselov VV, Cravotto G. Highly efficient pumpkin-seed extraction with the simultaneous recovery of lipophilic and hydrophilic compounds. Food and Bioproducts Processing 2019. [DOI: 10.1016/j.fbp.2019.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cauduro VH, Doneda M, Barin JS, Mello PA, Flores EM, Picoloto RS. Successive digestions for pre-concentration and ultra-trace determination of Br and I by plasma-based atomic spectrometry and ion chromatography. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Picoloto RS, Enders MS, Doneda M, Iop GD, Duarte FA, Barin JS, Krug FJ, Flores EM. An in situ pre-concentration method for fluorine determination based on successive digestions by microwave-induced combustion. Talanta 2019; 194:314-319. [DOI: 10.1016/j.talanta.2018.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/05/2018] [Accepted: 10/05/2018] [Indexed: 11/29/2022]
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16
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Bizzi CA, Cruz SM, Schmidt L, Burrow RA, Barin JS, Paniz JNG, Flores EMM. Maxwell–Wagner Effect Applied to Microwave-Induced Self-Ignition: A Novel Approach for Carbon-Based Materials. Anal Chem 2018; 90:4363-4369. [DOI: 10.1021/acs.analchem.7b03731] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cezar A. Bizzi
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Sandra M. Cruz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Lucas Schmidt
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Robert A. Burrow
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Juliano S. Barin
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Jose N. G. Paniz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Erico M. M. Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Rio Grande do Sul, Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica-INCTBio, 13083-970 Campinas, São Paulo, Brazil
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Oliveira AS, Ballus CA, Menezes CR, Wagner R, Paniz JNG, Tischer B, Costa AB, Barin JS. Green and fast determination of the alcoholic content of wines using thermal infrared enthalpimetry. Food Chem 2018; 258:59-62. [PMID: 29655754 DOI: 10.1016/j.foodchem.2018.03.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/04/2018] [Accepted: 03/08/2018] [Indexed: 01/31/2023]
Abstract
An innovative use of thermal infrared enthalpimetry (TIE) is proposed for the determination of alcoholic content of red and white wines. Notwithstanding the presence of ethanol in beverages, absolute ethanol was added directly to wines, and the temperature rise caused by the heat of dilution was monitored using an infrared camera. Analytical signals were obtained in only 10 s for four samples simultaneously, and a calibration curve was constructed with hydroalcoholic reference solutions. A linear calibration curve was obtained from 3.0 to 18.0% (v/v) ethanol (R2 = 0.9987). The results showed agreement ranging from 98.2 to 104.0% with 942.06 and 969.12 methods of AOAC. Organic compounds (e.g., sugar) did not interfere in the determinations. The proposed method provided fast results, with a throughput of 480 samples per hour and negligible energy consumption (0.001 kWh). In addition, the consumption of reagents was reduced when compared with conventional method fulfilling green analytical chemistry requirements.
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Affiliation(s)
- Alessandra S Oliveira
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Cristiano A Ballus
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Cristiano R Menezes
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Roger Wagner
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - José Neri G Paniz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Bruna Tischer
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Sistemas e Processos Industriais, Universidade de Santa Cruz do Sul, 96815-900 Santa Cruz do Sul, RS, Brazil
| | - Adilson B Costa
- Programa de Pós-Graduação em Tecnologia Ambiental, Universidade de Santa Cruz do Sul, 96815-900 Santa Cruz do Sul, RS, Brazil; Programa de Pós-Graduação em Sistemas e Processos Industriais, Universidade de Santa Cruz do Sul, 96815-900 Santa Cruz do Sul, RS, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Severo IA, Deprá MC, Barin JS, Wagner R, de Menezes CR, Zepka LQ, Jacob-Lopes E. Bio-combustion of petroleum coke: The process integration with photobioreactors. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Pedrotti MF, Pereira LSF, Bizzi CA, Paniz JNG, Barin JS, Flores EMM. Microwave-induced combustion: Thermal and morphological aspects for understanding the mechanism of ignition process for analytical applications. Talanta 2017; 174:64-71. [PMID: 28738635 DOI: 10.1016/j.talanta.2017.05.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 05/24/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022]
Abstract
In the present work, for the first time a systematic study was performed using an infrared camera and scanning electron microscopy (SEM) coupled to energy dispersive X-ray spectrometry (EDS) to evaluate the mechanisms involved in microwave-induced combustion method, which has been extensively used for sample preparation. Cellulose and glass fiber discs, wetted with the igniter solution (6molL-1 NH4NO3), were evaluated under microwave field in a monomode system. The temperature of the discs surface was recorded during microwave irradiation and the effect of NH4NO3 concentration and irradiation time on cellulose oxidation was evaluated. The morphology of the discs surface was characterized by SEM before and after irradiation in an inert atmosphere. According to the results, the surface temperature of the discs increased near to 100°C and remained in this temperature for few seconds while water evaporate. After that, temperature increased over 200°C due to the thermal decomposition of NH4NO3 salt, releasing a large amount of energy that accelerates cellulose oxidation. The higher the igniter concentration, the shorter was the microwave irradiation time for cellulose oxidation. The SEM images revealed that cellulose disc was more porous after microwave irradiation, enhancing oxygen diffusion within the paper and making easier its ignition. The EDS spectrum of cellulose and glass fiber discs showed that signal intensity for nitrogen decreased after microwave irradiation, showing that NH4NO3 was consumed during this process. Therefore, it was demonstrated that the ignition process is the result of synergic interaction of NH4NO3 thermal decomposition and organic matter oxidation (cellulose) releasing heat and feeding the chain reaction.
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Affiliation(s)
- Matheus F Pedrotti
- Departamento de Engenharia Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Leticia S F Pereira
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Cezar A Bizzi
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Jose N G Paniz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência de Alimentos, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Tischer B, Oliveira AS, Costa AB, Cichoski AJ, Barcia MT, Wagner R, Barin JS. Rapid and simultaneous determination of acidity and salt content of pickled vegetable brine by using thermal infrared enthalpimetry. J Food Compost Anal 2017. [DOI: 10.1016/j.jfca.2017.07.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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21
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Oliveira AS, Nora FMD, Mello RO, Mello PA, Tischer B, Costa AB, Barin JS. One-Shot, reagent-free determination of the alcoholic content of distilled beverages by thermal infrared enthalpimetry. Talanta 2017; 171:335-340. [DOI: 10.1016/j.talanta.2017.05.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/04/2017] [Accepted: 05/06/2017] [Indexed: 12/31/2022]
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22
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Ferrão TS, Tischer B, Menezes MFSC, Hecktheuer LHR, Menezes CR, Barin JS, Michels L, Wagner R. Effect of Microwave and Hot Air Drying on the Physicochemical Characteristics and Quality of Jelly Palm Pulp. FSTR 2017. [DOI: 10.3136/fstr.23.835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Tassiane S. Ferrão
- Department of Technology and Food Science — Federal University of Santa Maria
| | - Bruna Tischer
- Department of Technology and Food Science — Federal University of Santa Maria
| | | | | | | | - Juliano S. Barin
- Department of Technology and Food Science — Federal University of Santa Maria
| | - Leandro Michels
- Department of Electrical Power Processing — Federal University of Santa Maria
| | - Roger Wagner
- Department of Technology and Food Science — Federal University of Santa Maria
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23
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Schmidt L, Bizzi CA, Rosa FC, Cruz SM, Barin JS, Flores EMM. Microwave-induced combustion: towards a robust and predictable sample preparation method. NEW J CHEM 2017. [DOI: 10.1039/c7nj01359k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ideal gas equation was used as a tool for calculating the stoichiometric amount of O2 for efficient sample digestion using MIC method.
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Affiliation(s)
- Lucas Schmidt
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Cezar A. Bizzi
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Francisco C. Rosa
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Sandra M. Cruz
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Juliano S. Barin
- Departamento de Tecnologia e Ciência dos Alimentos
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Erico M. M. Flores
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
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Bizzi CA, Barin JS, Oliveira JSS, Cravotto G, Flores EMM. Microwave-Assisted Oxidation of Organic Matter Using Diluted HNO3 under O2 Pressure: Rationalization of the Temperature Gradient Effect for Acid Regeneration. J BRAZIL CHEM SOC 2017. [DOI: 10.21577/0103-5053.20170001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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25
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Tischer B, Vendruscolo RG, Wagner R, Menezes CR, Barin CS, Giacomelli SR, Budel JM, Barin JS. Effect of grinding method on the analysis of essential oil from Baccharis articulata (Lam.) Pers. Chem Pap 2016. [DOI: 10.1007/s11696-016-0052-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Oliveira JS, Picoloto RS, Bizzi CA, Mello PA, Barin JS, Flores EM. Microwave-assisted ultraviolet digestion of petroleum coke for the simultaneous determination of nickel, vanadium and sulfur by ICP-OES. Talanta 2015; 144:1052-8. [DOI: 10.1016/j.talanta.2015.07.060] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/19/2015] [Accepted: 07/21/2015] [Indexed: 10/23/2022]
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Cruz SM, Schmidt L, Dalla Nora FM, Pedrotti MF, Bizzi CA, Barin JS, Flores EM. Microwave-induced combustion method for the determination of trace and ultratrace element impurities in graphite samples by ICP-OES and ICP-MS. Microchem J 2015. [DOI: 10.1016/j.microc.2015.05.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Cichoski AJ, Moura HC, Silva MS, Rampelotto C, Wagner R, Barin JS, Vendruscolo RG, Dugatto JS, Athayde DR, Dalla Costa MA. Oxidative and Microbiological Profiles of Chicken Drumsticks Treated with Ultraviolet-C Radiation. J FOOD PROCESS PRES 2015. [DOI: 10.1111/jfpp.12529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Alexandre J. Cichoski
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Heloísa C. Moura
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Marianna S. Silva
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Cristine Rampelotto
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Roger Wagner
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Juliano S. Barin
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Raquel G. Vendruscolo
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Jonas S. Dugatto
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Dirceu R. Athayde
- Department of Food Science and Technology; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Marco A. Dalla Costa
- Department of Electric Energy Processing; Federal University of Santa Maria; 97105-900 Santa Maria RS Brazil
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Kaczala S, Costa AB, Posselt EL, Barin JS, Flores EMM, Dressler VL. Element Determination in Pharmaceuticals Using Direct Solid Analysis-Electrothermal Vaporization Inductively Coupled Plasma Optical Emission Spectrometry. J BRAZIL CHEM SOC 2015. [DOI: 10.5935/0103-5053.20150300] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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30
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Pereira LSF, Iop GD, Nascimento MS, Diehl LO, Bizzi CA, Barin JS, Flores EMM. Alternative Igniters Based on Oxidant Salts for Microwave-Induced Combustion Method. J BRAZIL CHEM SOC 2015. [DOI: 10.5935/0103-5053.20150280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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31
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Pereira LSF, Bizzi CA, Schmidt L, Mesko MF, Barin JS, Flores EMM. Evaluation of nitrates as igniters for microwave-induced combustion: understanding the mechanism of ignition. RSC Adv 2015. [DOI: 10.1039/c4ra12554a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Recent studies have reported the use of microwave-induced combustion (MIC) for digestion of several kinds of matrices.
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Affiliation(s)
| | - Cezar A. Bizzi
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Lucas Schmidt
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Marcia F. Mesko
- Centro de Ciências Químicas
- Farmacêuticas e de Alimentos
- Universidade Federal de Pelotas
- Pelotas
- Brazil
| | - Juliano S. Barin
- Departamento de Tecnologia e Ciência de Alimentos
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Erico M. M. Flores
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
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Bizzi CA, Nóbrega JA, Barin JS, Oliveira JSS, Schmidt L, Mello PA, Flores EMM. Effect of simultaneous cooling on microwave-assisted wet digestion of biological samples with diluted nitric acid and O2 pressure. Anal Chim Acta 2014; 837:16-22. [PMID: 25000853 DOI: 10.1016/j.aca.2014.05.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 05/23/2014] [Accepted: 05/30/2014] [Indexed: 10/25/2022]
Abstract
The present work evaluates the influence of vessel cooling simultaneously to microwave-assisted digestion performed in a closed system with diluted HNO3 under O2 pressure. The effect of outside air flow-rates (60-190 m(3) h(-1)) used for cooling of digestion vessels was evaluated. An improvement in digestion efficiency caused by the reduction of HNO3 partial pressure was observed when using higher air flow-rate (190 m(3) h(-1)), decreasing the residual carbon content for whole milk powder from 21.7 to 9.3% (lowest and highest air flow-rate, respectively). The use of high air flow-rate outside the digestion vessel resulted in a higher temperature gradient between liquid and gas phases inside the digestion vessel and improved the efficiency of sample digestion. Since a more pronounced temperature gradient was obtained, it contributed for increasing the condensation rate and thus allowed a reduction in the HNO3 partial pressure of the digestion vessel, which improved the regeneration of HNO3. An air flow-rate of 190 m(3) h(-1) was selected for digestion of animal fat, bovine liver, ground soybean, non fat milk powder, oregano leaves, potato starch and whole milk powder samples, and a standard reference material of apple leaves (NIST 1515), bovine liver (NIST 1577) and whole milk powder (NIST 8435) for further metals determination by inductively coupled plasma atomic emission spectroscopy (ICP-OES). Results were in agreement with certified values and no interferences caused by matrix effects during the determination step were observed.
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Affiliation(s)
- Cezar A Bizzi
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Joaquim A Nóbrega
- Departamento de Química, Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, Brazil
| | - Juliano S Barin
- Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Jussiane S S Oliveira
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Lucas Schmidt
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Paola A Mello
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Erico M M Flores
- Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97105-900, Brazil.
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Müller ALH, Müller CC, Antes FG, Barin JS, Dressler VL, Flores EMM, Müller EI. Determination of Bromide, Chloride, and Fluoride in Cigarette Tobacco by Ion Chromatography after Microwave-Induced Combustion. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.670800] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Barin JS, Pereira JSF, Mello PA, Knorr CL, Moraes DP, Mesko MF, Nóbrega JA, Korn MGA, Flores EMM. Focused microwave-induced combustion for digestion of botanical samples and metals determination by ICP OES and ICP-MS. Talanta 2012; 94:308-14. [PMID: 22608453 DOI: 10.1016/j.talanta.2012.03.048] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 03/20/2012] [Accepted: 03/21/2012] [Indexed: 11/30/2022]
Abstract
The advantages and shortcomings of focused microwave-induced combustion (FMIC) for digestion of plant samples were studied. The effects of sample mass, absorbing solution, oxygen gas flow-rate, and time of reflux step on recoveries of major, minor and trace metals were systematically evaluated. Afterwards, Al, Ba, Ca, Co, Cr, Cu, Mg, Mn, Ni, Sr, V, and Zn were determined by inductively coupled plasma optical emission spectrometry (ICP OES) and by inductively coupled plasma mass spectrometry (ICP-MS). The main advantages of FMIC when compared to microwave-assisted wet digestion (MAWD) and focused-microwave-assisted wet digestion (FMAWD) are the possibility to digest larger masses of samples (up to 3g) using shorter heating times and diluted nitric acid solution for absorbing all analytes. Using the selected experimental conditions for FMIC, residual carbon content was lower than 0.7% for all samples and relative standard deviation (RSD) varied from 1.5 to 14.1%. Certified reference materials (NIST 1515 apple leaves and NIST 1547 peach leaves) were used for checking accuracy and determined values for all metals were in agreement with certified values at a 95% confidence level. No statistical difference (ANOVA, 95% of confidence level) was observed for results obtained by FMIC, FMAWD, and MAWD. Limits of detection were lower when using FMIC in the range of 0.02-0.15 μg g(-1) for ICP OES and 0.001-0.01 μg g(-1) for ICP-MS, which were about 3 and 6 times lower than the values obtained by FMAWD and MAWD, respectively. It is important to point out that FMIC was a suitable sample preparation method for major, minor and trace metals by both determination techniques (ICP OES and ICP-MS). Additionally, since it allows lower LODs (because up to 3g of sample can be digested) and diluted acid solutions are used (without any further dilution), the use of ICP-MS is not mandatory.
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Affiliation(s)
- J S Barin
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
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35
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Bizzi CA, Flores EM, Barin JS, Garcia EE, Nóbrega JA. Understanding the process of microwave-assisted digestion combining diluted nitric acid and oxygen as auxiliary reagent. Microchem J 2011. [DOI: 10.1016/j.microc.2011.05.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Antes FG, Mesko MF, Barin JS, Moreira CM, Flores ÉM, Dressler VL. Development of multi-elemental method for quality control of parenteral component solutions using ICP-MS. Microchem J 2011. [DOI: 10.1016/j.microc.2010.12.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Bizzi CA, Barin JS, Hermes AL, Mortari SR, Flores ÉMM. A fast microwave-assisted procedure for loss on drying determination in saccharides. J BRAZIL CHEM SOC 2011. [DOI: 10.1590/s0103-50532011000200026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Mesko MF, Pereira JSF, Moraes DP, Barin JS, Mello PA, Paniz JNG, Nóbrega JA, Korn MGA, Flores EMM. Focused Microwave-Induced Combustion: A New Technique for Sample Digestion. Anal Chem 2010; 82:2155-60. [DOI: 10.1021/ac902976j] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Márcia F. Mesko
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Juliana S. F. Pereira
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Diogo P. Moraes
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Juliano S. Barin
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Paola A. Mello
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - José Neri G. Paniz
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Joaquim A. Nóbrega
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Maria G. A. Korn
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - Erico M. M. Flores
- Instituto de Química e Geociências, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil, Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, Departamento de Química, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil, and Departamento de Química Analítica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
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Barin JS, Bartz FR, Dressler VL, Paniz JNG, Flores ÉMM. Microwave-Induced Combustion Coupled to Flame Furnace Atomic Absorption Spectrometry for Determination of Cadmium and Lead in Botanical Samples. Anal Chem 2008; 80:9369-74. [DOI: 10.1021/ac8015714] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juliano S. Barin
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Fabiane R. Bartz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Valderi L. Dressler
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - José N. G. Paniz
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Érico M. M. Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
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40
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Flores ÉMM, Mesko MF, Moraes DP, Pereira JSF, Mello PA, Barin JS, Knapp G. Determination of Halogens in Coal after Digestion Using the Microwave-Induced Combustion Technique. Anal Chem 2008; 80:1865-70. [DOI: 10.1021/ac8000836] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Érico M. M. Flores
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Márcia F. Mesko
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Diogo P. Moraes
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Juliana S. F. Pereira
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Paola A. Mello
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Juliano S. Barin
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
| | - Günter Knapp
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil, and Micro- and Radiochemistry, Graz University of Technology, Technikerstrasse 4, A-8010 Graz, Austria
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Mortari SR, Saidelles APF, Barin JS, Flores �MM, Martins AF. A Simple Procedure for Decomposition of Human Hair Using Polypropylene Vials for Selenium Determination by Hydride Generation Atomic Absorption Spectrometry. Mikrochim Acta 2004. [DOI: 10.1007/s00604-004-0250-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Flores ÉMM, Paniz JNG, Saidelles APF, Barin JS, Dressler VL, Müller EI, Costa AB. Direct solid sampling by flame atomic absorption spectrometry: determination of manganese in coal samples. J BRAZIL CHEM SOC 2004. [DOI: 10.1590/s0103-50532004000200007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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