Search Results - "Olsina, Roberto A"
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Trace mercury determination in drinking and natural water samples by room temperature ionic liquid based-preconcentration and flow injection-cold vapor atomic absorption spectrometry
Published in Journal of hazardous materials (15-08-2009)“…A liquid–liquid extraction procedure (L–L) based on room temperature ionic liquid (RTIL) was developed for the preconcentration and determination of mercury in…”
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2
Rapid and sensitive HILIC–MS/MS analysis of carnitine and acetylcarnitine in biological fluids
Published in Analytical and bioanalytical chemistry (01-09-2013)“…Monitoring carnitine and acetylcarnitine levels in biological fluids is a powerful tool for diagnostic studies. Research has recently shown that the analysis…”
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3
Sensitive determination of cadmium in water samples by room temperature ionic liquid-based preconcentration and electrothermal atomic absorption spectrometry
Published in Analytica chimica acta (17-10-2008)“…A sensitive preconcentration methodology for Cd determination at trace levels in water samples was developed in this work. 1-Butyl-3-methylimidazolium…”
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4
On-line ionic liquid-based preconcentration system coupled to flame atomic absorption spectrometry for trace cadmium determination in plastic food packaging materials
Published in Talanta (Oxford) (15-05-2009)“…A novel on-line preconcentration method based on liquid–liquid (L–L) extraction with room temperature ionic liquids (RTILs) coupled to flame atomic absorption…”
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5
Sensitive determination of mercury in tap water by cloud point extraction pre-concentration and flow injection-cold vapor-inductively coupled plasma optical emission spectrometry
Published in Spectrochimica acta. Part B: Atomic spectroscopy (22-02-2002)“…A pre-concentration and determination methodology for mercury at trace levels in water samples was developed. Cloud point extraction was successfully employed…”
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6
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
Published in Journal of hazardous materials (15-01-2013)“…► Speciation studies of Tl at ultratrace levels in water samples. ► Straightforward speciation analysis of Tl. ► Investigation of ionic liquid as ion pairing…”
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7
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
Published in Talanta (Oxford) (15-11-2013)“…A simple and green technique named polymer-supported ionic liquid solid phase extraction (PSIL-SPE) was developed for mercury (Hg) species determination…”
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8
Arsenic speciation analysis in mono-varietal wines by on-line ionic liquid-based dispersive liquid–liquid microextraction
Published in Food chemistry (01-05-2013)“…► Novel on-line IL-DLLME technique for determination of As species at trace levels. ► Selective determination of inorganic and organic As species in wine…”
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9
Simultaneous determination of dextromethorphan, diphenhydramine and phenylephrine in expectorant and decongestant syrups by capillary electrophoresis
Published in Journal of pharmaceutical and biomedical analysis (15-10-2002)“…The separation of basic nitrogenous compounds commonly used as active ingredients in cold medicine formulations by micellar electrokinetic capillary…”
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Journal Article Conference Proceeding -
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Multielemental analysis in vegetable edible oils by inductively coupled plasma mass spectrometry after solubilisation with tetramethylammonium hydroxide
Published in Food chemistry (15-09-2014)“…•A simple and sensitive method to analyse edible oils by ICPMS has been developed.•Single-step sample solubilisation with tetramethylammonium hydroxide was…”
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11
Dispersive liquid–liquid microextraction and preconcentration of thallium species in water samples by two ionic liquids applied as ion-pairing reagent and extractant phase
Published in Talanta (Oxford) (15-01-2012)“…► Simple analytical method with two ILs for determination of Tl species was developed. ► Capabilities of ionic liquids as ion pairing reagent was investigated…”
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12
Development of solid phase extraction strategies to minimize the effect of human urine matrix effect on the response of carnitine by UPLC–MS/MS
Published in Microchemical journal (01-11-2016)“…A rapid, selective and sensitive ultra-high performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was developed to determine carnitine…”
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13
Speciation and preconcentration of vanadium(V) and vanadium(IV) in water samples by flow injection-inductively coupled plasma optical emission spectrometry and ultrasonic nebulization
Published in Analyst (London) (01-01-2001)“…An on-line separation, preconcentration and determination system for vanadium(IV) and vanadium(V) comprising inductively coupled plasma optical emission…”
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14
Determination of β-glucosidase activity in soils with a bioanalytical sensor modified with multiwalled carbon nanotubes
Published in Analytical and bioanalytical chemistry (01-06-2010)“…Soil microorganisms and enzymes are the primary mediators of soil biological processes, including organic matter degradation, mineralization, and nutrient…”
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15
On-line preconcentration and determination of chromium in parenteral solutions by flow injection—flame atomic absorption spectrometry
Published in Journal of pharmaceutical and biomedical analysis (05-02-2003)“…An on-line chromium preconcentration and determination system implemented with flame atomic absorption spectrometry (FAAS) associated to flow injection (FI)…”
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16
A novel and rapid method for determination of natamycin in wines based on ultrahigh-performance liquid chromatography coupled to tandem mass spectrometry: validation according to the 2002/657/EC European decision
Published in Analytical and bioanalytical chemistry (2012)“…A novel, simple, and rapid reversed-phase liquid chromatography–tandem mass spectrometric methodology was developed for the analysis of natamycin in wine…”
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17
Method development for Cd and Hg determination in biodiesel by electrothermal atomic absorption spectrometry with emulsion sample introduction
Published in Talanta (Oxford) (15-11-2012)“…A novel method for analysis of biodiesel by electrothermal atomic absorption spectrometry is described. This analytical strategy involves sample preparation as…”
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18
Determination of arylsulphatase and phosphatase enzyme activities in soil using screen-printed electrodes modified with multi-walled carbon nanotubes
Published in Soil biology & biochemistry (01-12-2009)“…Sustainability of agricultural systems has become an important issue all over the world. The activity of enzymes is potentially an important quality…”
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Speciation analysis of thallium using electrothermal AAS following on-line pre-concentration in a microcolumn filled with multiwalled carbon nanotubes
Published in Mikrochimica acta (1966) (2009)“…The enrichment ability of carbon nanotubes (CNTs) was investigated and a new method established for the determination of trace thallium species in…”
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On-line preconcentration and speciation analysis of inorganic vanadium in urine using l-methionine immobilised on controlled pore glass
Published in Talanta (Oxford) (15-01-2008)“…A study was undertaken to ascertain the analytical capabilities of combined ICP–OES with ultrasonic nebulization to perform on-line preconcentration and…”
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