Search Results - "Alzaga, R."

Spatial and temporal distribution of dissolved/dispersed aromatic hydrocarbons in seawater in the area affected by the Prestige oil spill by González, J.J., Viñas, L., Franco, M.A., Fumega, J., Soriano, J.A., Grueiro, G., Muniategui, S., López-Mahía, P., Prada, D., Bayona, J.M., Alzaga, R., Albaigés, J.

“…Seawater samples collected at three depths from 68 stations along the Northern Spanish coast were analysed for dissolved/dispersed petroleum aromatic…”
Get full text

Development of a procedure for the determination of perfluorocarboxylic acids in sediments by pressurised fluid extraction, headspace solid-phase microextraction followed by gas chromatographic–mass spectrometric determination by Alzaga, R., Salgado-Petinal, C., Jover, E., Bayona, J.M.

“…A procedure for the determination of perfluorocarboxylic acids (i.e. PFC 7–10A) in sediment by pressurized fluid extraction (PFE), derivatization, headspace…”
Get full text

Low Part per Trillion Determination of Reactive Alkanethiols in Wastewater by in Situ Derivatization-Solid-Phase Microextraction Followed by GC/MS by Salgado-Petinal, C, Alzaga, R, García-Jares, C, Llompart, M, Bayona, J. M

“…A solid-phase microextraction (SPME) procedure for the simultaneous determination of volatile alkanethiols (i.e., methane-, ethane-, propanethiol) and…”
Get full text

Improvements in the methylmercury extraction from human hair by headspace solid-phase microextraction followed by gas-chromatography cold-vapour atomic fluorescence spectrometry by Montuori, P., Jover, E., Alzaga, R., Diez, S., Bayona, J.M.

“…Improvements in the methylmercury extraction from human hair by solid-phase microextraction followed by gas chromatography coupled to cold-vapour atomic…”
Get full text

Lipase and Phospholipase Activity Methods for Marine Organisms by Nolasco-Soria, H, Moyano-López, F, Vega-Villasante, F, Del Monte-Martínez, Alberto, Espinosa-Chaurand, D, Gisbert, E, Nolasco-Alzaga, H R

“…Lipases are very important enzymes having a role in fat digestion and lipid metabolism in marine animals, plants, and microorganisms. The methods for measuring…”
Get more information

In situ Derivatization and Supercritical Fluid Extraction for the Simultaneous Determination of Butyltin and Phenyltin Compounds in Sediment by Cai, Yong, Alzaga, R, Bayona, Josep M

Get full text

DETERMINATION OF ORGANOCHLORINE COMPOUNDS IN NEUSTON FROM THE MEDITERRANEAN by García-flor, N., Alzaga, R., Ortiz, L., Bayona, J. M., Albaigés, J.

“…A reliable analytical procedure was developed to determine trace levels of organochlorine compounds in neuston samples. Freeze-dried samples were extracted by…”
Get full text

Characterization of organic compounds in soil and water affected by pyrite tailing spillage by Alzaga, R, Mesas, A, Ortiz, L, Bayona, J.M

“…A variety of mono- and di-chlorinated and brominated triphenylamines were identified in the sludge and contaminated soils affected by a toxic waste spill that…”
Get full text

Occupational allergic contact dermatitis from cassia (Chinese cinnamon) as a flavouring agent in coffee by De Benito, V, Alzaga, R.

Get full text

Characterisation of polycyclic aromatic hydrocarbons in liquid products from pyrolysis of Eucalyptus grandis by supercritical fluid extraction and GC/MS determination by Pimenta, A.S., Vital, B.R., Bayona, J.M., Alzaga, R.

“…Slow pyrolysis of Eucalyptus grandis wood was performed in an oven laboratory and liquid products were quantitatively collected. Polycyclic aromatic…”
Get full text

Use of Supercritical Fluid Extraction for Pirimicarb Determination in Soil by Alzaga, Roberto, Bayona, Josep M, Barcelo, Damia

“…The suitability of a variety of neat supercritical fluids (carbon dioxide, nitrous oxide, and chlorodifluoromethane) and modifiers (toluene, methanol,…”
Get full text

Comparison of supercritical fluid extraction and liquid-liquid extraction for isolation of selected pesticides stored in freeze-dried water samples by ALZAGA, R, DURAND, G, BARCELO, D, BAYONA, J. M

“…Two different extraction procedures, liquid-liquid extraction (LLE) and supercritical fluid extraction (SFE) were compared for the isolation and trace…”
Get full text

Determination of perfluorocarboxylic acids in aqueous matrices by ion-pair solid-phase microextraction–in-port derivatization–gas chromatography–negative ion chemical ionization mass spectrometry by Alzaga, Roberto, Bayona, Josep Marı́a

“…A rapid, selective and simple analytical procedure using tetrabutylammonium as ion pair in conjunction with solid-phase microextraction followed by in-port…”
Get full text

Fast solid-phase extraction–gas chromatography–mass spectrometry procedure for oil fingerprinting: Application to the Prestige oil spill by Alzaga, Roberto, Montuori, Paolo, Ortiz, Laura, Bayona, Josep M, Albaigés, Joan

“…A rapid and simple fractionation procedure using solid-phase extraction (SPE) cartridges was developed for an accurate determination of aliphatic and…”
Get full text

Development of a Power Demand Meter for Residential Loads Using ZigBee Wireless Sensor Technology by Alzaga, Arnie R., Caguete, Kenneth R., De Vera, Michael Erick N., Karl E. Villarino, Krenz, Magwili, Glenn V., Pacis, Michael C.

“…This paper provides an overview of the development of a power demand meter for residential loads using zigbee wireless sensor technology. The design enables…”
Get full text

Accurate Determination of 2,4,6-Trichloroanisole in Wines at Low Parts Per Trillion by Solid-Phase Microextraction Followed by GC-ECD by Alzaga, Roberto, Ortiz, Laura, Sánchez-Baeza, Francisco, Marco, M.-Pilar, Bayona, Josep Maria

“…A headspace solid-phase microextraction (HS-SPME) procedure at 30 °C with a 100 μm PDMS fiber of a saturated NaCl solution stirred at 1100 rpm combined to…”
Get full text

Determination of linear alkylbenzensulfonates in aqueous matrices by ion-pair solid-phase microextraction–in-port derivatization–gas chromatography–mass spectrometry by Alzaga, Roberto, Peña, Araceli, Ortiz, Laura, Marı́a Bayona, Josep

“…Trace determination (low ng/ml) of linear alkylbenzensulfonates (LASs) in water was achieved by solid-phase microextraction (SPME) of ion-pairs formed with…”
Get full text

Determination of phthalic monoesters in aqueous and urine samples by solid-phase microextraction-diazomethane on-fibre derivatization-gas chromatography-mass spectrometry by Alzaga, Roberto, Peña, Araceli, Bayona, Josep María

“…A solvent‐free analytical methodology for the determination of phthalic monoesters (MPs) with diazomethane on‐fibre derivatization using solid‐phase…”
Get full text

Spatial and temporal distribution of dissolved/dispersed aromatic hydrocarbons in seawater in the area affected by the Prestige oil spill: The 'Prestige' oil spill: a scientific response by GONZALEZ, J. J, VINAS, L, ALZAGA, R, ALBAIGES, J, FRANCO, M. A, FUMEGA, J, SORIANO, J. A, GRUEIRO, G, MUNIATEGUI, S, LOPEZ-MAHIA, P, PRADA, D, BAYONA, J. M

Get full text

Development of a novel supercritical fluid extraction procedure for lanolin extraction from raw wool by Alzaga, Roberto, Pascual, Esther, Erra, Pilar, Bayona, Josep M.

“…A procedure based on supercritical fluid extraction (SFE) has been developed for the determination of lanolin present on raw wool fibres. Residual lanolin…”
Get full text