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Oviedo MN, Luján CE, Lemos AA, Botella MB, Llaver M, Wuilloud RG. An overview of preconcentration techniques combined with inductively coupled plasma mass spectrometry for trace element determination in biological studies. Anal Bioanal Chem 2024; 416:2641-2656. [PMID: 38243115 DOI: 10.1007/s00216-024-05124-z] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/23/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
In the last decades, the determination of trace elements in biological materials has emerged as an important area of study because of its relevance to human health and the environment. Inductively coupled plasma mass spectrometry (ICP-MS) has proven to be a powerful tool for trace element analysis, owing to its high sensitivity and ability to determine several elements in a single measurement. However, given the complex nature of biological matrices and the presence of elements, most of them at ultratrace levels, it becomes crucial to complement ICP-MS with preconcentration techniques to increase the sensitivity and selectivity of analytical methods. This article presents an exhaustive overview of liquid- and solid-phase preconcentration techniques used in combination with ICP-MS for trace element determination in different biological samples from 2000 to the present. An in-depth discussion of the advances on the application of state-of-the-art solvents and materials in trace element extraction and preconcentration is presented. Special attention is given to different strategies for elemental speciation analysis, employing both chromatographic and non-chromatographic techniques. The role of automation in these methodologies is also described. Finally, future trends and challenges related to this topic are discussed.
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Affiliation(s)
- María N Oviedo
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Cecilia E Luján
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Aldana A Lemos
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - María B Botella
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Mauricio Llaver
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Rodolfo G Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo / Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500, Mendoza, Argentina.
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Luján CE, Lemos AA, Oviedo MN, Llaver M, Wuilloud RG. Deep eutectic solvents as a green alternative for trace element analysis in food and beverage samples: Recent advances and challenges. Talanta 2024; 269:125451. [PMID: 38048680 DOI: 10.1016/j.talanta.2023.125451] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/06/2023]
Abstract
Metals and metalloids have different effects on human health even at trace levels. Some of them are essential for living organisms while others can be toxic. Therefore, the determination of trace elements in food and beverage is highly important to understand their impact in human health. A new generation of solvents named deep eutectic solvents (DES) has emerged as a green alternative for trace element analysis, owing to their low toxicity, biodegradability, and high extraction capacity. In recent years, the application of DES in extraction techniques for trace element analysis in food and beverage samples has increased significantly. This review summarizes recent advances and challenges on the application of DES to develop microextraction techniques useful for the analysis of samples with complex matrices. The importance of the use of biodegradable substances instead of classic organic solvents, which are toxic, volatile, and flammable in methods for elemental analysis with a positive environmental impact is also highlighted. Finally, conclusions and future challenges arising from the use of DES in microextraction techniques are discussed.
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Affiliation(s)
- Cecilia E Luján
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - Aldana A Lemos
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - María N Oviedo
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - Mauricio Llaver
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - Rodolfo G Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, (5500) Mendoza, Argentina.
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Ingrassia EB, Fiorentini EF, Wuilloud RG, da Silva SM, Escudero LB. Novel bionanomaterial based on Spirulina maxima algae and graphene oxide for lead microextraction and determination in water and infant beverages. Anal Bioanal Chem 2023; 415:5475-5486. [PMID: 37394522 DOI: 10.1007/s00216-023-04821-5] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/06/2023] [Accepted: 06/22/2023] [Indexed: 07/04/2023]
Abstract
A new hybrid bionanomaterial composed of graphene oxide (GO) and Spirulina maxima (SM) algae was synthesized and applied to develop a preconcentration method based on the dispersive micro-solid phase extraction (D-μ-SPE) technique for the determination of Pb in water and infant beverages. In this work, Pb(II) was extracted with 3 mg of the hybrid bionanomaterial (GO@SM) followed by a back-extraction step using 500 µL of 0.6 mol L-1 HCl. Then, a 1.5 × 10-3 mol L-1 dithizone solution was added to the sample containing the analyte to form a purplish red-colored complex for its detection by UV-Vis spectrophotometry at 553 nm. An extraction efficiency of 98% was obtained after optimization of experimental variables such as GO@SM mass, pH, sample volume, type, and time of agitation. A detection limit of 1 μg L-1 and a relative standard deviation of 3.5% (at 5 μg L-1 Pb(II), n = 10) were achieved. The calibration linear range was obtained between 3.3 and 95 µg L-1 Pb(II). The proposed method was successfully applied for the preconcentration and determination of Pb(II) in infant beverages. Finally, the greenness degree of the D-µ-SPE method was evaluated using the Analytical GREEnness calculator (AGREE), obtaining a score of 0.62.
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Affiliation(s)
- Estefanía B Ingrassia
- Environmental Biotechnology Laboratory (BioTA), Faculty of Exact and Natural Sciences, National University of Cuyo, Interdisciplinary Institute of Basic Sciences (ICB), UNCUYO-CONICET, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Emiliano F Fiorentini
- Environmental Biotechnology Laboratory (BioTA), Faculty of Exact and Natural Sciences, National University of Cuyo, Interdisciplinary Institute of Basic Sciences (ICB), UNCUYO-CONICET, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Rodolfo G Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Faculty of Exact and Natural Sciences, National University of Cuyo, Interdisciplinary Institute of Basic Sciences (ICB), UNCUYO-CONICET, Padre J. Contreras 1300, 5500, Mendoza, Argentina
| | - Stela M da Silva
- Faculty of Agricultural Sciences, National University of Cuyo, Almirante Brown Almirante Brown 500, Luján de Cuyo, Mendoza, Argentina
| | - Leticia B Escudero
- Environmental Biotechnology Laboratory (BioTA), Faculty of Exact and Natural Sciences, National University of Cuyo, Interdisciplinary Institute of Basic Sciences (ICB), UNCUYO-CONICET, Padre J. Contreras 1300, 5500, Mendoza, Argentina.
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Llaver M, Barrionuevo SD, Troiani H, Wuilloud RG, Ibañez FJ. Highly Selective and Sensitive Fluorescent Determination of Fe3+ within Alcoholic Beverages with 1,5-Diphenylcarbazone-Functionalized Graphene Quantum Dots. Talanta Open 2023. [DOI: 10.1016/j.talo.2023.100202] [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: 03/09/2023] Open
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Quintas PY, Fiorentini EF, Llaver M, González RE, Wuilloud RG. State-of-the-art extraction and separation of enantiomers through the application of alternative solvents. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116733] [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: 10/17/2022]
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Canizo BV, Quintas PY, Wuilloud RG, Silva MF, Gomez FJ. Fluorescent behavior of melatonin and related indoleamines in natural deep eutectic solvents. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119902] [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: 10/17/2022]
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Quintas PY, Keunchkarian S, Romero L, Canizo BV, Wuilloud RG, Castells CB. Determination of amino acid content and its enantiomeric composition in honey samples from Mendoza, Argentina. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Pamela Y. Quintas
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID) Facultad de Ciencias Exactas y Naturales Universidad Nacional de Cuyo Instituto Interdisciplinario de Ciencias Básicas CONICET Mendoza Argentina
| | - Sonia Keunchkarian
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos (LIDMA) Facultad de Ciencias Exactas Universidad Nacional de La Plata CIC‐PBA CONICET La Plata Argentina
| | - Lilian Romero
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos (LIDMA) Facultad de Ciencias Exactas Universidad Nacional de La Plata CIC‐PBA CONICET La Plata Argentina
| | - Brenda V. Canizo
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID) Facultad de Ciencias Exactas y Naturales Universidad Nacional de Cuyo Instituto Interdisciplinario de Ciencias Básicas CONICET Mendoza Argentina
| | - Rodolfo G. Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID) Facultad de Ciencias Exactas y Naturales Universidad Nacional de Cuyo Instituto Interdisciplinario de Ciencias Básicas CONICET Mendoza Argentina
| | - Cecilia B. Castells
- Laboratorio de Investigación y Desarrollo de Métodos Analíticos (LIDMA) Facultad de Ciencias Exactas Universidad Nacional de La Plata CIC‐PBA CONICET La Plata Argentina
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Perez MB, Lipinski VM, Fillipini MF, Chacon Madrid K, Zezzi Arruda MA, Wuilloud RG. Distribution, accumulation and speciation of selenium at the different growth stages of four garlic clones. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:1506-1519. [PMID: 34157936 DOI: 10.1080/19440049.2021.1933206] [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] [Indexed: 10/21/2022]
Abstract
Selenium (Se) is an essential micronutrient for humans. Garlic (Allium sativum L.) metabolises Se into important Se-amino acids like Se-methylselenocysteine (Se-MetSeCys), precursor of methylselenol, an active species for cancer prevention. Therefore, the Se accumulation and speciation in garlic were studied to evaluate their relations with growth stages and types of plant clones. Four garlic clones (Nieve INTA, Union FCA, Gostoso INTA and Rubí INTA) were fortified with a Se solution (169 g Se L-1). The association of Se to different molecular weight fractions was evaluated by size-exclusion chromatography coupled to inductively coupled plasma mass spectrometry (SEC-ICP-MS) detection. Also, anion exchange chromatography (AEC-ICP-MS) was used for the determination of Se-amino acids, while their identification was performed by ESI-MS/MS. The Se was incorporated into high (7-5 kDa) and low (2-4 kDa) molecular weight fractions. The presence of Se-MetSeCys was observed mostly. Se-MetSeCys increased in bulbs to a maximum value but increased, then decreased, in leaves and roots. The Se-organic species were mostly found in bulbs in the last growth stage. Garlic showed a significant ability to accumulate and metabolise Se, specially, the red clones (Gostoso INTA and Rubí INTA). Also, this work suggests that this plant may become an attractive source of Se-amino acids with important biological properties.
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Affiliation(s)
- María B Perez
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina.,Instituto de Tecnología Agropecuaria (INTA), Estación Experimental la Consulta, Mendoza, Argentina
| | - Victor M Lipinski
- Instituto de Tecnología Agropecuaria (INTA), Estación Experimental la Consulta, Mendoza, Argentina
| | - María F Fillipini
- Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Katherine Chacon Madrid
- Department of Analytical Chemistry, Group of Spectrometry, Sample Preparation and Mechanization - GEPAM, Institute of Chemistry, University of Campinas - Unicamp, Campinas, Brazil
| | - Marco A Zezzi Arruda
- Department of Analytical Chemistry, Group of Spectrometry, Sample Preparation and Mechanization - GEPAM, Institute of Chemistry, University of Campinas - Unicamp, Campinas, Brazil
| | - Rodolfo G Wuilloud
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina.,Laboratorio de Química Analítica Para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo/Instituto Interdisciplinario de Ciencias Básicas (ICB), Mendoza, Argentina
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Oviedo MN, Fiorentini EF, Lemos AA, Wuilloud RG. Ultra-sensitive Sb speciation analysis in water samples by magnetic ionic liquid dispersive liquid-liquid microextraction and multivariate optimization. Anal Methods 2021; 13:1033-1042. [PMID: 33555281 DOI: 10.1039/d0ay02276d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient separation and preconcentration of inorganic Sb species in different water samples were performed in this work by a novel dispersive liquid-liquid microextraction (DLLME) method based on the application of a magnetic ionic liquid (MIL) and electrothermal atomic absorption spectroscopy (ETAAS) detection. The Sb(iii) species was selectively extracted by complexation with ammonium diethyldithiophosphate (DDTP) and 45 μL of the MIL trihexyl(tetradecyl)phosphonium tetrachloroferrate ([P6,6,6,14]FeCl4) as extractant. Subsequently, a magnetic rod was applied for phase separation, introducing it directly into the sample solution, and the MIL phase was then diluted in chloroform. Afterwards, 15 μL of this solution was injected into the graphite furnace of ETAAS for Sb determination. A multivariate study was performed to obtain the optimal extraction conditions. Selective reduction of Sb(v) to Sb(iii) with 1% (w/v) KI before preconcentration was applied for total inorganic Sb determination and Sb(v) concentration was calculated by subtraction. The analytical performance of the method included extraction efficiencies of 98.0% for Sb(iii) and 92.6% for Sb(v), LOD of 0.02 μg L-1 for Sb(iii) and relative standard deviations of 3.1% for Sb(iii) and 3.5% for Sb(v) (at 6 μg L-1 Sb(iii) and Sb(v), n = 10). The calibration linear range was 0.08-20 μg L-1. The results showed that the proposed methodology was highly sensitive and selective for Sb speciation analysis in tap, dam, mineral, wetland, underground, rain and river water samples.
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Affiliation(s)
- María N Oviedo
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500 Mendoza, Argentina.
| | - Emiliano F Fiorentini
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500 Mendoza, Argentina.
| | - Aldana A Lemos
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500 Mendoza, Argentina.
| | - Rodolfo G Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET UNCUYO, Padre J. Contreras 1300, 5500 Mendoza, Argentina.
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Fiorentini EF, Botella MB, Wuilloud RG. A simple preconcentration method for highly sensitive determination of Pb in bee products by magnetic ionic liquid dispersive liquid-liquid microextraction and electrothermal atomic absorption spectrometry. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103661] [Citation(s) in RCA: 6] [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: 10/23/2022]
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Llaver M, Wuilloud RG. Studying the effect of an ionic liquid on cloud point extraction technique for highly efficient preconcentration and speciation analysis of tellurium in water, soil and sediment samples. Talanta 2020; 212:120802. [DOI: 10.1016/j.talanta.2020.120802] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/31/2020] [Accepted: 02/01/2020] [Indexed: 10/25/2022]
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Sotolongo AC, Messina MM, Ibañez FJ, Wuilloud RG. Hybrid ionic liquid-3D graphene-Ni foam for on-line preconcentration and separation of Hg species in water with atomic fluorescence spectrometry detection. Talanta 2020; 210:120614. [DOI: 10.1016/j.talanta.2019.120614] [Citation(s) in RCA: 15] [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: 09/11/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 10/25/2022]
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Maniero MÁ, Wuilloud RG, Callegari EA, Smichowski PN, Fanelli MA. Metalloproteomics analysis in human mammary cell lines treated with inorganic mercury. J Trace Elem Med Biol 2020; 58:126441. [PMID: 31812871 PMCID: PMC8061084 DOI: 10.1016/j.jtemb.2019.126441] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 11/23/2022]
Abstract
The interest in inorganic Hg toxicity and carcinogenicity has been pointed to target organs such as kidney, brain or placenta, but only a few studies have focused on the mammary gland. In this work, analytical combination techniques (SDS-PAGE followed by CV-AFS, and nanoUPLC-ESI-MS/MS) were used to determine proteins that could bind Hg in three human mammary cell lines. Two of them were tumorigenic (MCF-7 and MDA-MB-231) and the other one was the non-tumorigenic cell line (MCF-10A). There are no studies that provide this kind of information in breast cell lines with IHg treatment. Previously, we described the viability, uptake and the subcellular distribution of Hg in human breast cells and analysis of RNA-seq about the genes that encode proteins which are related to cytotoxicity of Hg. This work provides important protein candidates for further studies of Hg toxicity in the mammary gland, thus expanding our understanding of how environmental contaminants might affect tumor progression and contribute with future therapeutic methods.
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Affiliation(s)
- Mariángeles Ávila Maniero
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Instituto Interdisciplinario de Ciencias Básicas, Universidad Nacional de Cuyo, CONICET, Facultad de Ciencias Exactas y Naturales, Padre J. Contreras 1300, 5500, Mendoza, Argentina; Facultad de Farmacia y Bioquímica, Universidad Juan Agustín Maza, Lateral Sur del Acceso Este 2245, M5519, Guaymallén, Mendoza, Argentina
| | - Rodolfo G Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Instituto Interdisciplinario de Ciencias Básicas, Universidad Nacional de Cuyo, CONICET, Facultad de Ciencias Exactas y Naturales, Padre J. Contreras 1300, 5500, Mendoza, Argentina.
| | - Eduardo A Callegari
- BRIN-USDS SOM Proteomics Facility, University of South Dakota, 414 E Clark St, Vermillion, SD, 57069, USA
| | - Patricia N Smichowski
- Comisión Nacional de Energía Atómica, Gerencia Química, CONICET, Av. Gral. Paz 1499, B1650 Villa Maipú, Buenos Aires, Argentina
| | - Mariel A Fanelli
- Laboratorio de Oncología, Instituto de Medicina y Biología Experimental de Cuyo (IMBECU-CONICET), Av. Dr. Adrian Ruiz Leal, Mendoza, Argentina
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Campoy-Diaz AD, Escobar-Correas S, Canizo BV, Wuilloud RG, Vega IA. A freshwater symbiosis as sensitive bioindicator of cadmium. Environ Sci Pollut Res Int 2020; 27:2580-2587. [PMID: 31832941 DOI: 10.1007/s11356-019-07082-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
The vulnerability of aquatic ecosystems due to the entry of cadmium (Cd) is a concern of public and environmental health. This work explores the ability of tissues and symbiotic corpuscles of Pomacea canaliculata to concentrate and depurate Cd. From hatching to adulthood (4 months), snails were cultured in reconstituted water, which was a saline solution in ASTM Type I water. Then, adult snails were exposed for 8 weeks (exposure phase) to Cd (5 μg/L) and then returned to reconstituted water for other 8 weeks (depuration phase). Cadmium concentration in the digestive gland, kidney, head/foot and viscera (remaining of the snail body), symbiotic corpuscles, and particulate excreta was determined by electrothermal atomic absorption spectrometry. After exposure, the digestive gland showed the highest concentration of Cd (BCF = 5335). Symbiotic corpuscles bioaccumulated Cd at a concentration higher than that present in the water (BCF = 231 for C symbiotic corpuscles, BCF = 8 for K symbiotic corpuscles). No tissues or symbiotic corpuscles showed a significant change in the Cd levels at different time points of the depuration phase (weeks 8, 9, 10, 12, and 16). The symbiotic depuration through particulate excreta was faster between weeks 8 and 10, and then slower after on. Our findings show that epithelial cells of the digestive gland of P. canaliculata and their symbiotic C corpuscles are sensitive places for the bioindication of Cd in freshwater bodies.
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Affiliation(s)
- Alejandra D Campoy-Diaz
- IHEM - CONICET, Universidad Nacional de Cuyo, Mendoza, Argentina
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Sophia Escobar-Correas
- IHEM - CONICET, Universidad Nacional de Cuyo, Mendoza, Argentina
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Brenda V Canizo
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Instituto Interdisciplinario de Ciencias Básicas, Universidad Nacional de Cuyo, CONICET, Facultad de Ciencias Exactas y Naturales, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - Rodolfo G Wuilloud
- Laboratorio de Química Analítica para Investigación y Desarrollo (QUIANID), Instituto Interdisciplinario de Ciencias Básicas, Universidad Nacional de Cuyo, CONICET, Facultad de Ciencias Exactas y Naturales, Padre J. Contreras 1300, (5500) Mendoza, Argentina
| | - Israel A Vega
- IHEM - CONICET, Universidad Nacional de Cuyo, Mendoza, Argentina.
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina.
- Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina.
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Orsi RF, Wuilloud RG, Wuilloud JCAD, Olsina RA, Martinez LD. On-Line Preconcentration and Determination of Cadmium in Honey Using Knotted Reactor Coupled to Flow Injection-Flame Atomic Absorption Spectrometry. J AOAC Int 2019. [DOI: 10.1093/jaoac/85.6.1410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An on-line cadmium preconcentration and determination system implemented with flame atomic absorption spectrometry (FAAS) associated with flow injection was studied. Cadmium was retained as Cd-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol Cd-(5-Br-PADAP) complex, pH 9.3. The Cd complex was removed from the knotted reactor (KR) with ethanol. A total enhancement factor of 140 was obtained with respect to FAAS (40 for KR and 3.5 due to the use of ethanol) with preconcentration time of 120 s. The detection limit value for preconcentration of 1 g sample was 0.5 ng/g. The repeatability for 10 replicate determinations at 5.0 ng/g Cd level was 3.5% relative standard deviation, calculated from peak heights obtained. The calibration graph using the preconcentration system for Cd was linear with a correlation coefficient of 0.9990 at levels near the detection limits to at least 2000 ng/g. The method was successfully applied to determination of total Cd in honey samples.
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Affiliation(s)
- Ricardo Fernández Orsi
- National University of San Luis, Chacabuco and Pedernera, Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, PO Box 375, 5700 San Luis, Argentina
| | - Rodolfo G Wuilloud
- National University of San Luis, Chacabuco and Pedernera, Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, PO Box 375, 5700 San Luis, Argentina
| | - Jorgelina C A de Wuilloud
- National University of San Luis, Chacabuco and Pedernera, Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, PO Box 375, 5700 San Luis, Argentina
| | - Roberto A Olsina
- National University of San Luis, Chacabuco and Pedernera, Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, PO Box 375, 5700 San Luis, Argentina
| | - Luis D Martinez
- National University of San Luis, Chacabuco and Pedernera, Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, PO Box 375, 5700 San Luis, Argentina
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Wuilloud RG, González AH, Marchevsky EJ, Olsina RA, Martinez LD. On-Line Complexation/Preconcentration System for the Determination of Lead in Wine by Inductively Coupled Plasma–Atomic Emission Spectrometry with Ultrasonic Nebulization. J AOAC Int 2019. [DOI: 10.1093/jaoac/84.5.1555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
An on-line lead preconcentration and determination system implemented with inductively coupled plasma–atomic emission spectrometry (ICP–AES) with ultrasonic nebulization (USN) in association with flow injection was studied. For the preconcentration of lead, a Pb–quinolin–8–ol complex was formed on-line at pH 6.8 and retained on Amberlite XAD–16 resin. The lead was removed from the microcolumn by countercurrent elution with nitric acid. A total enhancement factor of 225 was obtained with respect to ICP–AES with pneumatic nebulization (15.0 for USN and 15.0 for the column). The detection limit for Pb for the preconcentration of a 10 mL wine sample was 0.15 μg/L. The precision for 10 replicate determinations at a Pb level of 25 μg/L was a relative standard deviation of 2.5%, calculated from the peak heights obtained. The calibration graph obtained by using the preconcentration system for lead was linear with a correlation coefficient of 0.9995 for levels near the detection limit up to ≥ 1000 μg/L. The method was successfully applied to the determination of lead in wine samples.
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Affiliation(s)
- Rodolfo G Wuilloud
- National University of San Luis, Biochemistry and Pharmacy, Faculty of Chemistry, Department of Analytical Chemistry, Chacabuco and Pedernera, PO Box 375, 5700 San Luis, Argentina
| | - Alfredo H González
- National University of San Luis, Biochemistry and Pharmacy, Faculty of Chemistry, Department of Analytical Chemistry, Chacabuco and Pedernera, PO Box 375, 5700 San Luis, Argentina
| | - Eduardo J Marchevsky
- National University of San Luis, Biochemistry and Pharmacy, Faculty of Chemistry, Department of Analytical Chemistry, Chacabuco and Pedernera, PO Box 375, 5700 San Luis, Argentina, and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Roberto A Olsina
- National University of San Luis, Biochemistry and Pharmacy, Faculty of Chemistry, Department of Analytical Chemistry, Chacabuco and Pedernera, PO Box 375, 5700 San Luis, Argentina, and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Luis D Martinez
- National University of San Luis, Biochemistry and Pharmacy, Faculty of Chemistry, Department of Analytical Chemistry, Chacabuco and Pedernera, PO Box 375, 5700 San Luis, Argentina, and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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Rosales GD, Resentera AC, Gonzalez JA, Wuilloud RG, Rodriguez MH. Efficient extraction of lithium from β-spodumene by direct roasting with NaF and leaching. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fiorentini EF, Canizo BV, Wuilloud RG. Determination of As in honey samples by magnetic ionic liquid-based dispersive liquid-liquid microextraction and electrothermal atomic absorption spectrometry. Talanta 2019; 198:146-153. [DOI: 10.1016/j.talanta.2019.01.091] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/24/2022]
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Llaver M, Wuilloud RG. Separation and preconcentration of inorganic Se species in tap and natural waters using unfunctionalized nanosilica as sorption material in dispersive micro-solid phase extraction. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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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20
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Martinis EM, Grijalba AC, Pérez MB, Llaver M, Wuilloud RG. Synergistic analytical preconcentration with ionic liquid–nanomaterial hybrids. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Maniero MÁ, Guerrero-Gimenez ME, Fanelli MA, Wuilloud RG. Inorganic mercury in mammary cells: viability, metal uptake but efflux? Biometals 2017; 31:69-80. [DOI: 10.1007/s10534-017-0068-0] [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] [Received: 09/29/2017] [Accepted: 11/20/2017] [Indexed: 11/28/2022]
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22
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Castro Grijalba A, Fiorentini EF, Wuilloud RG. Ionic liquid-assisted separation and determination of selenium species in food and beverage samples by liquid chromatography coupled to hydride generation atomic fluorescence spectrometry. J Chromatogr A 2017; 1491:117-125. [PMID: 28249719 DOI: 10.1016/j.chroma.2017.02.045] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 09/08/2016] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 12/15/2022]
Abstract
Different ionic liquids (ILs) were assayed as mobile phase modifiers for the separation and determination of selenite [Se(IV)], selenate [Se(VI)], selenomethionine (SeMet) and Se-methylselenocysteine (SeMeSeCys) by reversed-phase high-performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry (RP-HPLC-HG-AFS). The use of several ILs: 1-butyl-3-methylimidazolium chloride, 1-hexyl-3-methylimidazolium chloride ([C6mim]Cl), 1-octyl-3-methylimidazolium chloride, 1-dodecyl-3-methylimidazolium bromide, 1-hexadecyl-3-methylimidazolium bromide and tributyl(methyl)phosphonium methylsulphate was evaluated. Also, the effect of pH, buffer type and IL concentration on the separation of Se species was studied. Complete separation was attained within 12min using a C8 column and a gradient performed with a mobile phase containing 0.1% (v/v) [C6mim]Cl at pH 6.0. The proposed method allows the separation of inorganic and organic Se species in a single chromatographic run, adding further benefits over already reported methods based on RP-HPLC. In addition, the influence of ILs on the AFS signals of each Se species was evaluated and a multivariate methodology was used for optimization of AFS sensitivity. The limits of detection were 0.92, 0.86, 1.41 and 1.19μgL-1 for Se(IV), Se(VI), SeMet and SeMeSeCys, respectively. The method was successfully applied for speciation analysis of Se in complex samples, such as wine, beer, yeast and garlic.
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Affiliation(s)
- Alexander Castro Grijalba
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Emiliano F Fiorentini
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Rodolfo G Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
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23
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Castro-Grijalba A, Reyes-Gallardo EM, Wuilloud RG, Lucena R, Cárdenas S. Synthesis of magnetic polymeric ionic liquid nanocomposites by the Radziszewski reaction. RSC Adv 2017. [DOI: 10.1039/c7ra07947h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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
The application of the Radziszewski reaction is proposed for the first time for the synthesis of magnetic polymeric ionic liquids. After their characterization, the sorption ability of the nanocomposites towards acidic compounds have been evaluated.
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Affiliation(s)
- Alexander Castro-Grijalba
- Laboratory of Analytical Chemistry for Research and Development (QUIANID)
- Facultad de Ciencias Exactas y Naturales
- Universidad Nacional de Cuyo
- Instituto Interdisciplinario de Ciencias Básicas (ICB), UNCUYO-CONICET
- (5500) Mendoza
| | - Emilia M. Reyes-Gallardo
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Rodolfo G. Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID)
- Facultad de Ciencias Exactas y Naturales
- Universidad Nacional de Cuyo
- Instituto Interdisciplinario de Ciencias Básicas (ICB), UNCUYO-CONICET
- (5500) Mendoza
| | - Rafael Lucena
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Soledad Cárdenas
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
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24
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Martinis EM, Wuilloud RG. Enhanced spectrophotometric detection of Hg in water samples by surface plasmon resonance of Au nanoparticles after preconcentration with vortex-assisted liquid-liquid microextraction. Spectrochim Acta A Mol Biomol Spectrosc 2016; 167:111-115. [PMID: 27262659 DOI: 10.1016/j.saa.2016.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 01/05/2016] [Accepted: 05/22/2016] [Indexed: 06/05/2023]
Affiliation(s)
- Estefanía M Martinis
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, (5500) Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
| | - Rodolfo G Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, (5500) Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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25
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Castro Grijalba A, Martinis EM, Wuilloud RG. Inorganic selenium speciation analysis in Allium and Brassica vegetables by ionic liquid assisted liquid-liquid microextraction with multivariate optimization. Food Chem 2016; 219:102-108. [PMID: 27765204 DOI: 10.1016/j.foodchem.2016.09.117] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 11/23/2015] [Revised: 09/06/2016] [Accepted: 09/18/2016] [Indexed: 01/12/2023]
Abstract
A highly sensitive vortex assisted liquid-liquid microextraction (VA-LLME) method was developed for inorganic Se [Se(IV) and Se(VI)] speciation analysis in Allium and Brassica vegetables. Trihexyl(tetradecyl)phosphonium decanoate phosphonium ionic liquid (IL) was applied for the extraction of Se(IV)-ammonium pyrrolidine dithiocarbamate (APDC) complex followed by Se determination with electrothermal atomic absorption spectrometry. A complete optimization of the graphite furnace temperature program was developed for accurate determination of Se in the IL-enriched extracts and multivariate statistical optimization was performed to define the conditions for the highest extraction efficiency. Significant factors of IL-VA-LLME method were sample volume, extraction pH, extraction time and APDC concentration. High extraction efficiency (90%), a 100-fold preconcentration factor and a detection limit of 5.0ng/L were achieved. The high sensitivity obtained with preconcentration and the non-chromatographic separation of inorganic Se species in complex matrix samples such as garlic, onion, leek, broccoli and cauliflower, are the main advantages of IL-VA-LLME.
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Affiliation(s)
- Alexander Castro Grijalba
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Estefanía M Martinis
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Rodolfo G Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre J. Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
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26
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Escudero LB, Fusari CM, Altamirano JC, Camargo AB, Wuilloud RG. Stability of iron-quercetin complexes in synthetic wine under in vitro digestion conditions. J Food Sci 2014; 79:C1933-8. [PMID: 25181940 DOI: 10.1111/1750-3841.12584] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 04/14/2014] [Accepted: 07/12/2014] [Indexed: 01/10/2023]
Abstract
UNLABELLED Wine is a dietary source of polyphenolic compounds with reported health benefits when moderately consumed. Several of these compounds can associate with metals forming complexes. Therefore, this work was conducted to reach a better understanding of the nature and chemical stability of wine-derived Fe(3+)-quercetin complexes in a digestion model. The stability of the complexes in a synthetic (simulated) wine was studied before and after in vitro gastric and intestinal digestions by high-performance liquid chromatography (HPLC) with UV-Vis detection. Metal determination was performed by atomic absorption spectrometry (ETAAS) to evaluate possible dissociation of complexes. During HPLC analysis all peaks eluted from the chromatographic column were collected, acidified, and analyzed by ETAAS. The results showed that complexes remain substantially stable after gastric digestion conditions, with recoveries of 84% to 90%. Although metal complexes were partially degraded during intestinal digestion, 41% to 45% of the Fe(3+)-quercetin complexes was recovered. PRACTICAL APPLICATION This work reveals the chemical stability of Fe3+–quercetin complexes in synthetic wines after an in vitro gastrointestinal digestion. The knowledge of this process would be useful to understand the bioavailability of these compounds.
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Affiliation(s)
- Leticia B Escudero
- Laboratory of Analytical Chemistry for Research and Development (QUIANID), Facultad de Ciencias Exactas y Naturales, Univ. Nacional de Cuyo, Padre J. Contreras 1300, Mendoza, 5500, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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27
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Escudero LB, Olsina RA, Wuilloud RG. Polymer-supported ionic liquid solid phase extraction for trace inorganic and organic mercury determination in water samples by flow injection-cold vapor atomic absorption spectrometry. Talanta 2013; 116:133-40. [DOI: 10.1016/j.talanta.2013.05.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/29/2013] [Accepted: 05/01/2013] [Indexed: 10/26/2022]
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Giraud-Billoud M, Vega IA, Wuilloud RG, Clément ME, Castro-Vazquez A. Imposex and novel mechanisms of reproductive failure induced by tributyltin (TBT) in the freshwater snail Pomacea canaliculata. Environ Toxicol Chem 2013; 32:2365-2371. [PMID: 23775621 DOI: 10.1002/etc.2310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 01/28/2013] [Accepted: 06/12/2013] [Indexed: 06/02/2023]
Abstract
The effects of tributyltin (TBT) on mortality and reproduction were studied in the invasive snail Pomacea canaliculata. The nominal median lethal concentration (LC50) was 9 µg TBT/L, after 28 d. The nominal no-observed effect on lethality concentration (NOECL) was 6 µg TBT/L after the same period. Male-female couples and females that had been group-mated but were isolated from males during the experiment (isolated females) were exposed (for 28 d) to either 0 µg/L or 6 µg/L of TBT (nominal NOECL-exposed). Copulation and oviposition frequencies, egg clutch mass, and percentage of egg fertility were recorded. Gonads (both sexes) and the seminal receptacle (females) were studied histologically at the end of the experiment. A significant decrease in copulation frequency was observed in mated-exposed females. Exposure also decreased oviposition frequency of mated-exposed and isolated-exposed females, but only the latter reached significance. No differences in either egg clutch mass or percentage of fertility were observed at first oviposition, but both parameters were drastically reduced in subsequent egg clutches of exposed females. No histological alterations were observed in gonads of TBT-exposed animals; however, sperm storage in the seminal receptacle was drastically decreased in exposed females. Imposex but no oviductal obstruction was observed in all exposed females. It is concluded that TBT induces reproductive failure in P. canaliculata by decreasing copulation frequency and by severely affecting sperm storage by the female.
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Martinis EM, Escudero LB, Salvarezza R, Calderón MF, Ibañez FJ, Wuilloud RG. Liquid–liquid microextraction based on a dispersion of Pd nanoparticles combined with ETAAS for sensitive Hg determination in water samples. Talanta 2013; 108:46-52. [DOI: 10.1016/j.talanta.2013.02.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 02/26/2013] [Accepted: 02/27/2013] [Indexed: 01/22/2023]
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Moyano S, Wuilloud RG, Olsina RA, Gásquez JA, Martinez LD. On-line preconcentration system for bismuth determination in urine by flow injection hydride generation inductively coupled plasma atomic emission spectrometry. Talanta 2013; 54:211-9. [PMID: 18968243 DOI: 10.1016/s0039-9140(01)00310-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/1999] [Revised: 02/15/2000] [Accepted: 03/30/2000] [Indexed: 11/25/2022]
Abstract
An on-line bismuth preconcentration and determination system implemented with hydride generation inductively coupled plasma atomic emission spectrometry (HG-ICP-AES) associated to flow injection (FI) was studied. Quinolin-8-ol and Amberlite XAD-7 were used for the retention of bismuth, at pH 4.5. The bismuth complex was removed from the micro-column with nitric acid. The detection limit value for the preconcentration of 100 ml of aqueous solution was 0.02 ng ml(-1) with a relative standard deviation (R.S.D.) of 3.5%, calculated from the peak heights obtained. The calibration graph using the preconcentration system for bismuth was linear with a correlation coefficient of 0.999 at levels near the detection limits up to at least 100 ng ml(-1). The method was successfully applied to the determination of bismuth in human urine samples.
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Affiliation(s)
- S Moyano
- Area de Química Analítica, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera-5700 San Luis, Argentina
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Escudero LB, Wuilloud RG, Olsina RA. Sensitive determination of thallium species in drinking and natural water by ionic liquid-assisted ion-pairing liquid-liquid microextraction and inductively coupled plasma mass spectrometry. J Hazard Mater 2013; 244-245:380-386. [PMID: 23270961 DOI: 10.1016/j.jhazmat.2012.11.057] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 11/22/2012] [Accepted: 11/26/2012] [Indexed: 05/28/2023]
Abstract
A fast and simple method involving separation and determination of thallium (Tl) species, based on novel ionic liquid-assisted ion pairing dispersive liquid-liquid microextraction (DLLME) method, was developed. Initially, Tl(III) was selectively complexed with chloride ion to form [TlCl(4)](-) chlorocomplex. Subsequently, tetradecyl(trihexyl)phosphonium chloride ionic liquid (CYPHOS(®) IL 101) was used to form the ion-pair with [TlCl(4)](-) anion followed by extraction. The DLLME procedure was developed by dispersing 80 μL of carbon tetrachloride with 100 μL of ethanol added to the aqueous solution. After DLLME, the upper aqueous phase containing Tl(I) only was removed and analysed by inductively coupled plasma-mass spectrometry (ICP-MS). In contrast to Tl(III), Tl(I) species does not form neither stable nor anionic complexes with chloride ions and it was not extracted into the organic phase. Total Tl concentration was obtained by direct introduction of sample into ICP-MS instrument. The calibration graph for the analyte was linear with a correlation coefficient of 0.9989. Under optimal conditions, detection limit of Tl species was 0.4 ng L(-1). The relative standard deviation (n=10) at 1 ng mL(-1) Tl concentration level was 1.3% for Tl(I) and 1.5% for Tl(III). The method was successfully applied for fast speciation analysis of Tl at ultratrace levels in real water samples.
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Affiliation(s)
- Leticia B Escudero
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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32
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Berton P, Monasterio RP, Wuilloud RG. Selective extraction and determination of vitamin B12 in urine by ionic liquid-based aqueous two-phase system prior to high-performance liquid chromatography. Talanta 2012; 97:521-6. [DOI: 10.1016/j.talanta.2012.05.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 05/07/2012] [Accepted: 05/08/2012] [Indexed: 11/26/2022]
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Berton P, Domínguez-Romero JC, Wuilloud RG, Sánchez-Calvo B, Chaki M, Carreras A, Valderrama R, Begara-Morales JC, Corpas FJ, Barroso JB, Gilbert-López B, García-Reyes JF, Molina-Díaz A. Determination of nitrotyrosine in Arabidopsis thaliana cell cultures with a mixed-mode solid-phase extraction cleanup followed by liquid chromatography time-of-flight mass spectrometry. Anal Bioanal Chem 2012; 404:1495-503. [DOI: 10.1007/s00216-012-6220-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 06/12/2012] [Accepted: 06/20/2012] [Indexed: 11/28/2022]
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Berton P, Martinis EM, Martinez LD, Wuilloud RG. Selective determination of inorganic cobalt in nutritional supplements by ultrasound-assisted temperature-controlled ionic liquid dispersive liquid phase microextraction and electrothermal atomic absorption spectrometry. Anal Chim Acta 2012; 713:56-62. [DOI: 10.1016/j.aca.2011.11.024] [Citation(s) in RCA: 58] [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] [Received: 09/05/2011] [Revised: 11/08/2011] [Accepted: 11/10/2011] [Indexed: 11/15/2022]
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Martinis EM, Escudero LB, Berton P, Monasterio RP, Filippini MF, Wuilloud RG. Determination of inorganic selenium species in water and garlic samples with on-line ionic liquid dispersive microextraction and electrothermal atomic absorption spectrometry. Talanta 2011; 85:2182-8. [DOI: 10.1016/j.talanta.2011.07.065] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 07/18/2011] [Accepted: 07/19/2011] [Indexed: 11/26/2022]
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Monasterio RP, Londonio JA, Farias SS, Smichowski P, Wuilloud RG. Organic solvent-free reversed-phase ion-pairing liquid chromatography coupled to atomic fluorescence spectrometry for organoarsenic species determination in several matrices. J Agric Food Chem 2011; 59:3566-3574. [PMID: 21388170 DOI: 10.1021/jf104654y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A novel method has been developed to determine As-containing animal feed additives including roxarsone (ROX), p-arsanilic acid (p-ASA) and nitarsone (NIT), as well as other organic As species (dimethylarsonic acid (DMAA) and monomethylarsonic acid (MMAA)) by ion-pairing high-performance liquid chromatography coupled to hydride generation atomic fluorescence spectrometry (IP-HPLC-HG-AFS). A simple isocratic reversed-phase (RP) HPLC method with a mobile phase containing citric acid and sodium hexanesulfonate (pH 2.0) was developed using a C(18) column. The use of an organic solvent free mobile phase turns this methodology into an environmentally friendly alternative. Several ion pair forming agents, such as sodium hexanesulfonate, tetrabutylammonium bisulfate and perfluoroheptanoic acid, were studied. The limits of detection for As species were calculated in standard solution and resulted to be 0.2, 0.5, 0.6, 1.6, and 1.6 μg As L(-1) for MMAA, DMAA, p-ASA, ROX and NIT, respectively. This method exhibited convenient operation, high sensitivity and good repeatability. It was applied to As speciation in different samples including arugula, dog food, dog urine and chicken liver.
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Affiliation(s)
- Romina P Monasterio
- Analytical Chemistry Research and Development Group (QUIANID), LISAMEN-CCT-CONICET-Mendoza, Mendoza, Argentina
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Berton P, Wuilloud RG. An online ionic liquid-based microextraction system coupled to electrothermal atomic absorption spectrometry for determination in environmental samples and pharmaceutical formulations. Anal Methods 2011; 3:664-672. [PMID: 32938088 DOI: 10.1039/c0ay00616e] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In the present work, an ionic liquid (IL) lighter than water was employed as extraction solvent in a dispersive liquid-liquid microextraction (DLLME) methodology. An original flow injection system for online microextraction and preconcentration of cobalt (Co) based on the use of tetradecyl(trihexyl)phosphonium chloride (CYPHOS® IL 101) was designed. Cobalt was complexed with 4-(2-pyridylazo)-resorcinol (PAR) reagent at pH 4.8 and then, the IL-DLLME procedure was developed by dispersing CYPHOS® IL 101 with acetone in an aqueous solution containing Co-PAR complex. Different pyridylazo dyes were evaluated for Co preconcentration in terms of their molecular structure, stability and acid-base equilibrium. Online extraction of Co-PAR into the IL and separation of the dispersed IL enriched phase were accomplished with a microcolumn containing Florisil material. Cobalt was removed from the microcolumn with a 10% (v/v) HNO3 acidified-acetone solution and finally measured by electrothermal atomic absorption spectrometry (ETAAS). The detection limit achieved after preconcentration of 2 mL of sample solution was 8 ng L-1. The precision for 10 replicate determinations at the 1 µg L-1 Co level was 5.1% relative standard deviation (RSD), calculated from the peak heights obtained. The method was successfully applied to Co determination in water samples as well as ophthalmic and parenteral solutions. For the first time, an IL-based microextraction technique was applied for metal determination in these complex samples, where Co recovery varied between 97.9 and 103%.
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Affiliation(s)
- Paula Berton
- Analytical Chemistry Research and Development Group (QUIANID), (LISAMEN-CCT-CONICET-Mendoza), Av. Ruiz Leal S/N Parque General San Martín, M 5502 IRA, Mendoza, Argentina.
| | - Rodolfo G Wuilloud
- Analytical Chemistry Research and Development Group (QUIANID), (LISAMEN-CCT-CONICET-Mendoza), Av. Ruiz Leal S/N Parque General San Martín, M 5502 IRA, Mendoza, Argentina.
- Instituto de Ciencias Básicas, Universidad Nacional de Cuyo, Mendoza, Argentina
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Maldonado MB, Zuritz CA, Wuilloud RG, Bageta CR, Terreni J, Sánchez MJ. A simple model of the diffusion phenomena taking place during the debittering process of green table olives. Grasas y Aceites 2011. [DOI: 10.3989/gya.022810] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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39
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Martinis EM, Berton P, Monasterio RP, Wuilloud RG. Emerging ionic liquid-based techniques for total-metal and metal-speciation analysis. Trends Analyt Chem 2010. [DOI: 10.1016/j.trac.2010.07.013] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [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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40
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Berton P, Martinis EM, Wuilloud RG. Development of an on-line temperature-assisted ionic liquid dispersive microextraction system for sensitive determination of vanadium in environmental and biological samples. J Hazard Mater 2010; 176:721-728. [PMID: 20006437 DOI: 10.1016/j.jhazmat.2009.11.094] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 11/17/2009] [Accepted: 11/18/2009] [Indexed: 05/28/2023]
Abstract
An original flow injection (FI) system was developed for on-line microextraction of Vanadium (V) based on room temperature ionic liquid (RTIL). Vanadium was complexed with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) at pH 4.0. A 40 microL-volume of 1-butyl-3-methylimidazolium hexafluorophosphate ([C(4)mim][PF(6)]) RTIL was mixed with 5 mL of sample solution containing the V-5-Br-PADAP complex. Then, a fully on-line temperature-assisted dispersion procedure was developed, followed by, analyte microextraction; and final on-line separation of the RTIL phase with a florisil-containing microcolumn. Vanadium was removed from the microcolumn with a 10% (v/v) nitric acid (in acetone) solution, and finally measured by electrothermal atomic absorption spectrometry (ETAAS). The detection limit achieved after preconcentration of 5 mL of sample solution, was 4.8 ng L(-1). The relative standard deviation (RSD) for 10 replicate determinations at 5 microg L(-1) of vanadium level was 4.1%, calculated from the obtained peak heights. The calibration graph was linear, with a correlation coefficient of 0.9982 at levels from the detection limits up to 15 microg L(-1). The method was successfully applied for the determination of vanadium in environmental and biological samples.
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Affiliation(s)
- Paula Berton
- Analytical Chemistry Research and Development Group (QUIANID), LISAMEN-CCT-CONICET-Mendoza, Av. Ruiz Leal S/N Parque General San Martín, M 5502 IRA Mendoza, Argentina
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41
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Martinis EM, Bertón P, Olsina RA, Altamirano JC, Wuilloud RG. Trace mercury determination in drinking and natural water samples by room temperature ionic liquid based-preconcentration and flow injection-cold vapor atomic absorption spectrometry. J Hazard Mater 2009; 167:475-481. [PMID: 19233554 DOI: 10.1016/j.jhazmat.2009.01.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 12/18/2008] [Accepted: 01/07/2009] [Indexed: 05/27/2023]
Abstract
A liquid-liquid extraction procedure (L-L) based on room temperature ionic liquid (RTIL) was developed for the preconcentration and determination of mercury in different water samples. The analyte was quantitatively extracted with 1-butyl-3-methylimidazolium hexafluorophosphate ([C(4)mim][PF(6)]) under the form of Hg-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (Hg-5-Br-PADAP) complex. A volume of 500 microl of 9.0 mol L(-1) hydrochloric acid was used to back-extract the analyte from the RTIL phase into an aqueous media prior to its analysis by flow injection-cold vapor atomic absorption spectrometry (FI-CV-AAS). A preconcentration factor of 36 was achieved upon preconcentration of 20 mL of sample. The limit of detection (LOD) obtained under the optimal conditions was 2.3ngL(-1) and the relative standard deviation (RSD) for 10 replicates at 1 microg L(-1) Hg(2+) was 2.8%, calculated with peaks height. The method was successfully applied to the determination of mercury in river, sea, mineral and tap water samples and a certified reference material (CRM).
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Affiliation(s)
- Estefanía M Martinis
- Laboratory of Environmental Research and Services of Mendoza, CCT-CONICET-Mendoza, Av. Ruiz Leal s/n, Parque General San Martín, Mendoza, Argentina
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Fontana AR, Silva MF, Martínez LD, Wuilloud RG, Altamirano JC. Determination of polybrominated diphenyl ethers in water and soil samples by cloud point extraction-ultrasound-assisted back-extraction-gas chromatography–mass spectrometry. J Chromatogr A 2009; 1216:4339-46. [DOI: 10.1016/j.chroma.2009.03.029] [Citation(s) in RCA: 72] [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] [Received: 12/01/2008] [Revised: 03/09/2009] [Accepted: 03/13/2009] [Indexed: 10/21/2022]
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Berton P, Martinis EM, Martinez LD, Wuilloud RG. Room temperature ionic liquid-based microextraction for vanadium species separation and determination in water samples by electrothermal atomic absorption spectrometry. Anal Chim Acta 2009; 640:40-6. [DOI: 10.1016/j.aca.2009.03.028] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2008] [Revised: 03/08/2009] [Accepted: 03/15/2009] [Indexed: 10/21/2022]
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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45
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Fontana AR, Wuilloud RG, Martínez LD, Altamirano JC. Simple approach based on ultrasound-assisted emulsification-microextraction for determination of polibrominated flame retardants in water samples by gas chromatography–mass spectrometry. J Chromatogr A 2009; 1216:147-53. [DOI: 10.1016/j.chroma.2008.11.034] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 11/07/2008] [Accepted: 11/13/2008] [Indexed: 11/26/2022]
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Martinis EM, Olsina RA, Altamirano JC, Wuilloud RG. Sensitive determination of cadmium in water samples by room temperature ionic liquid-based preconcentration and electrothermal atomic absorption spectrometry. Anal Chim Acta 2008. [DOI: 10.1016/j.aca.2008.09.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Caruso JA, Wuilloud RG, Altamirano JC, Harris WR. Modeling and separation-detection methods to evaluate the speciation of metals for toxicity assessment. J Toxicol Environ Health B Crit Rev 2006; 9:41-61. [PMID: 16393869 DOI: 10.1080/15287390500196172] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
There is an increasing appreciation for the importance of speciation in the assessment of metal toxicity. In this review, two approaches to speciation are discussed, with an emphasis on their application to biological samples. One approach is the direct separation and detection of metal species of toxicological interest. Various "hyphenated" techniques, consisting of a chromatographic system coupled to inductively coupled plasma-mass spectrometry (ICP-MS), are discussed. The chromatographic strategies employed for separation emphasize liquid chromatography (LC), but the increasing use of gas chromatography (GC) and capillary electrophoresis (CE) in speciation analysis is discussed. The second approach to speciation is the use of computer models to calculate the speciation of a metal ion within a complex mixture of ligands. This approach is applicable to systems in which the metal cation exchanges ligands rapidly, so that the sample represents an equilibrium mixture of metal complexes. These computational models are based on the equilibrium constants for the metal complexes and a series of mass balance equations and give the distribution of metal complexes in the original sample. This approach is illustrated using the speciation of Al(III) in serum as an example.
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Wuilloud RG, Shah M, Kannamkumarath SS, Altamirano JC. The potential of inductively coupled plasma-mass spectrometric detection for capillary electrophoretic analysis of pesticides. Electrophoresis 2005. [DOI: 10.1002/elps.200590052] [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: 11/08/2022]
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Wuilloud RG, Shah M, Kannamkumarath SS, Altamirano JC. The potential of inductively coupled plasma-mass spectrometric detection for capillary electrophoretic analysis of pesticides. Electrophoresis 2005; 26:1598-605. [PMID: 15765486 DOI: 10.1002/elps.200410098] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this work, the potential of inductively coupled plasma-mass spectrometry (ICP-MS) coupled to capillary electrophoresis (CE) to determine organophosphorus pesticides (OPPs) is demonstrated. Element specific detection of (31)P with ICP-MS is performed for the detection of OPPs. Three common OPPs, including glyphosate, glufosinate, and aminomethylphosphonic acid (AMPA), were analyzed by CE-ICP-MS to demonstrate its applicability for the analysis of OPPs. The advantages of using ICP-MS with respect to other common detectors, such as flame photometric detection (FPD), for CE analysis of OPPs are shown. Additionally, different CE separation conditions were studied to achieve complete baseline separation of the pesticide compounds in short migration times. Two CE buffer systems were evaluated for the separation of OPPs using ICP-MS detection. A buffer solution containing 40 mmol.L(-1) ammonium acetate at pH 9.0 and an applied voltage of +20 kV were finally selected leading to a separation time of 10.0 min. Both migration time and area relative standard deviations (%RSD) were evaluated and their respective values were in the intervals of 1.1-3.3% and 2.7-5.3%. Detection limits obtained with the CE-ICP-MS system were in the range of 0.11-0.19 mg.L(-1) (as compound) yielding an enhancement of 130- to 230-fold with respect to FPD. The proposed methodology was finally applied for the determination of the OPPs mentioned above in natural river water samples.
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Richardson DD, Kannamkumarath SS, Wuilloud RG, Caruso JA. Hydride Generation Interface for Speciation Analysis Coupling Capillary Electrophoresis to Inductively Coupled Plasma Mass Spectrometry. Anal Chem 2004; 76:7137-42. [PMID: 15571371 DOI: 10.1021/ac049066t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel hydride generation (HG) interface for coupling capillary electrophoresis (CE) with inductively coupled plasma mass spectrometry (ICPMS) is presented in this work. The CE-HG-ICPMS interface was applied to the separation and quantitation of common arsenic species. Lack of a commercially available HG interface for CE-ICPMS led to a three concentric tube design allowing alleviation of back pressure commonly observed in CE-HG-ICPMS. Due to the high sensitivity and element-specific detection of ICPMS, quantitative analysis of As(III), As(V), monomethylarsonic acid, and dimethylarsinic acid was achieved. Optimization of CE separation conditions resulted in the use of 20 mmol L(-1) sodium borate with 2% osmotic flow modifier (pH 9.0) and -20 kV applied potential for baseline resolution of each arsenic species in the shortest time. Hydride generation conditions were optimized through multiple electrophoretic separation analyses with 5% HCl and 3% NaBH(4) (in 0.2% NaOH) determined to be the optimum conditions. After completion of system optimization, detection limits obtained for the arsenic species were less than 40 ng L(-1) with electromigration time precision less than 1% within a total analysis time of 9.0 min. Finally, the interface was used for speciation analysis of arsenic in river and tap water samples.
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Affiliation(s)
- Douglas D Richardson
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, USA
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