Search Results - "Burguera, Marcela"

Recent on-line processing procedures for biological samples for determination of trace elements by atomic spectrometric methods by Burguera, José L., Burguera, Marcela

“…Few of the elements present in nature play a metabolic role in living organisms. According to their abundance, these elements are classified as macro-, micro-…”
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Determination of various arsenic species by flow injection hydride generation atomic absorption spectrometry: investigation of the effects of the acid concentration of different reaction media on the generation of arsines by Carrero, Pablo, Malavé, Auristela, Burguera, José Luis, Burguera, Marcela, Rondón, Carlos

“…An on-line flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) system was developed to study the effect of acid concentration on the…”
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Synthetic zeolites as sorbent material for on-line preconcentration of copper traces and its determination using flame atomic absorption spectrometry by Peña, Yaneira Petit de, López, Wilmer, Burguera, José Luis, Burguera, Marcela, Gallignani, Máximo, Brunetto, Rosario, Carrero, Pablo, Rondon, Carlos, Imbert, Freddy

“…This work assesses for the first time the potential of synthetic zeolites as adsorptive material for the preconcentration of copper traces. This involves the…”
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Determination of boron in blood, urine and bone by electrothermal atomic absorption spectrometry using zirconium and citric acid as modifiers by Burguera, Marcela, Burguera, José Luis, Rondón, Carlos, Carrero, Pablo

“…A comparative study of various potential chemical modifiers (Au, Ba, Be, Ca, Cr, Ir, La, Lu, Mg, Ni, Pd, Pt, Rh, Ru, Sr, V, W, and Zr), and different ‘coating’…”
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Flow analysis-hydride generation-Fourier transform infrared spectrometry. A new analytical technique for the simultaneous determination of antimony, arsenic and tin by Gallignani, Máximo, Ayala, Carlos, Brunetto, Rosario, Burguera, Jose Luis, Burguera, Marcela

“…The combination of flow analysis (FA), hydride generation (HG) and Fourier transform infrared (FTIR) spectrometry is proposed as a novel and powerful…”
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Analytical applications of emulsions and microemulsions by Burguera, José Luis, Burguera, Marcela

“…Dispersion systems like emulsions and microemulsions are able to solubilize both polar and non-polar substances due to the special arrangement of the oil and…”
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Pretreatment of oily samples for analysis by flow injection-spectrometric methods by Burguera, José Luis, Burguera, Marcela

“…This review presents a critical discussion of selected reports dealing with the pretreatment methods of oily samples and the determination of their organic and…”
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On-line electrothermal atomic absorption spectrometry configurations: recent developments and trends by Burguera, Marcela, Burguera, Jose Luis

“…In the present mini-review, an account of the actual state-of-the-art and future possibilities offered by on-line ET-AAS is presented. Topics such as: (1)…”
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Analytical applications of organized assemblies for on-line spectrometric determinations: present and future by Burguera, José L., Burguera, Marcela

“…An amphiphile (surfactant) spread on water can lead to the formation of different aggregates: vesicles, miscelles, emulsions or microemulsions; depending on…”
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Biochemical characterization of myocardial damage in chronic chagas' disease by Carrasco G., Hugo A., Olmos, Leopoldo, Dipaolo, Alberto, Alarcon, Marino, Burguera, José, Burguera, Marcela, Carrasco V., Hugo R.

“…Background: In the early asymptomatic stages of cardiomyopathy in chronic Chagas' disease, septal endomyocardial biopsies disclose multiple evidence of…”
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Flow injection on-line dilution for zinc determination in human saliva with electrothermal atomic absorption spectrometry detection by Burguera-Pascu, Margarita, Rodríguez-Archilla, Alberto, Burguera, José Luis, Burguera, Marcela, Rondón, Carlos, Carrero, Pablo

“…An automated method is described for the determination of zinc in human saliva by electrothermal atomic absorption spectrometry (ET AAS) after on-line dilution…”
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Analytical methodology for speciation of arsenic in environmental and biological samples by Burguera, Marcela, Burguera, JoséLuis

“…A literature search on the speciation of arsenic in environmental and biological samples shows an increasing interest of many researchers in the subject…”
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Molybdenum in human whole blood of adult residents of the Merida State (Venezuela) by Burguera, José L., Burguera, Marcela

“…The concentration of molybdenum was measured in whole blood samples of 418 (244 males and 174 females) apparently normal donors ranging in age from 18 to…”
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A simple strategy for determining ethanol in all types of alcoholic beverages based on its on-line liquid–liquid extraction with chloroform, using a flow injection system and Fourier transform infrared spectrometric detection in the mid-IR by Gallignani, Máximo, Ayala, Carlos, Brunetto, Maria del Rosario, Burguera, Jose Luis, Burguera, Marcela

“…In this work, a simple strategy for the determination of ethanol in all types of alcoholic beverages using Fourier transform infrared spectrometric detection…”
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Microwave-assisted sample decomposition in flow analysis by Burguera, Marcela, Burguera, José Luis

“…Digestion is the most demanding step in sample preparation, and its aim is to break the sample into more simple constituents with the aid of time, heat and…”
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Continuous flow system for lead determination by faas in spirituous beverages with solid phase extraction and on-line copper removal by Petit de Peña, Yaneira, Paredes, Boris, Rondón, Wendy, Burguera, Marcela, Burguera, José Luis, Rondón, Carlos, Carrero, Pablo, Capote, Tarcisio

“…A continuous flow system for the determination of lead in home made spirituous beverages was developed. The determination was based on the formation of a…”
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On-line generation and hydrolysis of methyl borate for the spectrophotometric determination of boron in soil and plants with azomethine-H by Carrero, Pablo, Malavé, Auristela, Rojas, Edyleiba, Rondón, Carlos, de Peña, Yaneira Petit, Burguera, José Luis, Burguera, Marcela

“…A continuous-flow system for boron determination in soils and plants with spectrophotometric detection using the azometihine-H-boron complex method was…”
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Determination of aluminum by electrothermal atomic absorption spectroscopy in lubricating oils emulsified in a sequential injection analysis system by Burguera, José L., Burguera, Marcela, Antón, Raquel E., Salager, Jean-Louis, Arandia, María A., Rondón, Carlos, Carrero, Pablo, de Peña, Yaneira Petit, Brunetto, Rosario, Gallignani, Máximo

“…The sequential injection (SIA) technique was applied for the on-line preparation of an “oil in water” microemulsion and for the determination of aluminum in…”
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Flow injection determination of bismuth in urine by successive retention of Bi(III) and tetrahydroborate(III) on an anion-exchange resin and hydride generation atomic absorption spectrometry by Carrero, Pablo, Gutiérrez, Luis, Rondón, Carlos, Burguera, José Luis, Burguera, Marcela, de Peña, Yaneira Petit

“…Bismuth as BiCl 4 − and BH 4 − ware successively retained in a column (150 mm × 4 mm, length × i.d.) packed with Amberlite IRA-410 (strong anion-exchange…”
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On-line electrochemical preconcentration and flame atomic absorption spectrometric determination of manganese in urine samples by Burguera, Marcela, Burguera, José Luis, Rivas, Darveris, Rondón, Carlos, Carrero, Pablo, Alarcón, Oscar M., Peña, Yaneira Petit de, Brunetto, Maria R., Gallignani, Máximo, Márquez, Olga P., Márquez, Jairo

“…A sensitive and selective method was developed for the determination of traces of manganese in urine using on-line electrochemical preconcentration followed by…”
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