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List of works by Ana M. Afonso

1,5-bis-(2,3-dihydroxy-phenylmethylene)-thiocarbohydrazone as reagent for the spectrofluorimetric determination of nanogram amounts of gallium

A novel in situ preconcentration method with ionic liquid-based surfactants resulting in enhanced sensitivity for the extraction of polycyclic aromatic hydrocarbons from toasted cereals

article

A novel preconcentration strategy for extraction methods based on common cationic surfactants: An alternative to classical coacervative extraction

scientific article published on 15 August 2012

An in-situ extraction–preconcentration method using ionic liquid-based surfactants for the determination of organic contaminants contained in marine sediments

scientific article published on 03 August 2012

Analytical methods applied to the determination of heterocyclic aromatic amines in foods.

scientific article published on 04 December 2007

Biosynthesis of antitumoral and bactericidal sanguinarine.

scientific article published on January 2006

Cloud-point preconcentration and HPLC determination of polycyclic aromatic hydrocarbons in marine sediments

scientific article published on 01 October 2001

Coupling micelle-mediated extraction using mixtures of surfactants and fluorescence measurements with a fiber-optic for the screening of PAHs in seawater

scientific article

Coupling the extraction efficiency of imidazolium-based ionic liquid aggregates with solid-phase microextraction-gas chromatography-mass spectrometry. Application to polycyclic aromatic hydrocarbons in a certified reference sediment

scientific article

DETERMINATION OF N-NITROSODIMETHYLAMINE BY HPLC, WITH FLUORESCENCE DETECTION. A SURVEY OF N-NITROSODIMETHYLAMINE IN COMMERCIAL BEERS

Degradation of carbaryl in natural waters: enhanced hydrolysis rate in micellar solution.

scientific article published in February 1992

Determination of carbonyl compounds in smoke samples: strategies for sampling and standardization

scientific article published on 27 February 2009

Determination of less polar heterocyclic amines in meat extracts

scientific article published on 19 September 2006

Determination of polycyclic aromatic hydrocarbons in marine sediments by high-performance liquid chromatography after microwave-assisted extraction with micellar media

scientific article published on 01 February 2000

Determination of polycyclic aromatic hydrocarbons in seawater by high-performance liquid chromatography with fluorescence detection following micelle-mediated preconcentration

scientific article published on 01 March 2002

Determination of the alkyl- and methoxy-phenolic content in wood extractives by micellar solid-phase microextraction and gas chromatography-mass spectrometry

scientific article

Determination of water pollutants by direct-immersion solid-phase microextraction using polymeric ionic liquid coatings

scientific article published on 21 December 2009

Developing qualitative extraction profiles of coffee aromas utilizing polymeric ionic liquid sorbent coatings in headspace solid-phase microextraction gas chromatography–mass spectrometry

scientific article published on 21 September 2011

Dispersive liquid-liquid microextraction versus single-drop microextraction for the determination of several endocrine-disrupting phenols from seawaters

scientific article published on 4 October 2009

Effects of cationic micelles on fluorescence of indole and indolecarboxylic acids. Analytical determinations

Effects of cetylpyridinium bromide micelles on the spectrofluorimetric characteristics of polycyclic aromatic hydrocarbons.

scientific article

Emissions of polycyclic aromatic hydrocarbons from combustion of agricultural and sylvicultural debris

Estimation of Uncertainty in the Analysis of Carbonyl Compounds by HPLC‐UV Using DNPH Derivatization

Evaluation of the Uncertainty Associated to the Determination of Heavy Metals in Seawater Using Graphite Furnace Atomic Absorption Spectrometry

Experimental Design Optimization of Solid‐Phase Microextraction Conditions for the Determination of Heterocyclic Aromatic Amines by High‐Performance Liquid Chromatography

Exposure to heterocyclic aromatic amines from the consumption of cooked red meat and its effect on human cancer risk: a review.

scientific article published on 18 October 2007

Fast microwave-assisted dansylation of N-nitrosamines. Analysis by high-performance liquid chromatography with fluorescence detection

scientific article published in February 2002

Focused Microwave‐Assisted Extraction and HPLC with Electrochemical Detection to Determine Heterocyclic Amines in Meat Extracts

Focused microwave-assisted micellar extraction combined with solid-phase microextraction—gas chromatography/mass spectrometry to determine chlorophenols in wood samples

scientific article published on 03 September 2006

Headspace-single drop microextraction (HS-SDME) in combination with high-performance liquid chromatography (HPLC) to evaluate the content of alkyl- and methoxy-phenolic compounds in biomass smoke

scientific article published on 16 June 2011

In-situ ionic liquid-dispersive liquid-liquid microextraction method to determine endocrine disrupting phenols in seawaters and industrial effluents

Ionic liquids as a tool for determination of metals and organic compounds in food analysis

article

Ionic liquids as desorption solvents and memory effect suppressors in heterocyclic aromatic amines determination by SPME-HPLC fluorescence

scientific article

Ionic liquids as mobile phase additives in high-performance liquid chromatography with electrochemical detection: application to the determination of heterocyclic aromatic amines in meat-based infant foods.

scientific article

Ionic liquids in dispersive liquid-liquid microextraction

Metabolism and toxicology of heterocyclic aromatic amines when consumed in diet: Influence of the genetic susceptibility to develop human cancer. A review

article

Micellar microwave-assisted extraction combined with solid-phase microextraction for the determination of polycyclic aromatic hydrocarbons in a certified marine sediment

article published in 2003

Micellar solid-phase microextraction for determining partition coefficients of substituted polycyclic aromatic hydrocarbons in micellar media: possible prediction of hydrocarbon-micelle behaviour.

scientific article published on 4 January 2007

Micelle-mediated extractions using nonionic surfactant mixtures and HPLC-UV to determine endocrine-disrupting phenols in seawaters

scientific article

Monitoring chlorophenols in industrial effluents by solid-phase microextraction–gas chromatography–mass spectrometry

Monitoring polycyclic aromatic hydrocarbons in seawaters and wastewaters using a dispersive liquid-liquid microextraction method

scientific article published in March 2013

Multiple headspace solid-phase microextraction for quantifying volatile free fatty acids in cheeses

scientific article published on 27 May 2014

Nonionic surfactant mixtures: a new cloud-point extraction approach for the determination of PAHs in seawater using HPLC with fluorimetric detection

Optimization of a sampling method to determine polycyclic aromatic hydrocarbons in smoke from incomplete biomass combustion

scientific article published in October 2004

Optimization of an analytical methodology for the determination of alkyl- and methoxy-phenolic compounds by HS-SPME in biomass smoke

scientific article published on 19 May 2006

Optimizing conditions for the extraction of pigments in cochineals (Dactylopius coccus Costa) using response surface methodology

scientific article published in November 2002

Polycyclic aromatic hydrocarbons in smoke used to smoke cheese produced by the combustion of rock rose (Cistus monspeliensis) and tree heather (Erica arborea) wood

scientific article published in January 2005

Polymeric ionic liquid coatings versus commercial solid-phase microextraction coatings for the determination of volatile compounds in cheeses

scientific article published on 30 December 2013

Rapid microwave-assisted dansylation of biogenic amines

Reversed Phase Liquid Chromatographic Method for Separation and Determination of Positional Isomeric Mono‐ and Di‐substituted Anilines and Phenols on an R,S‐Hydroxypropyl Ether β‐Cyclodextrin Column

article published in 2003

Solid-phase microextraction coupled with high-performance liquid chromatography for the analysis of heterocyclic aromatic amines.

scientific article published in March 2004

Spectrofluorimetric determination of carbaryl and 1-naphthol in micellar media

Study of the interactions between phenolic compounds and micellar media using micellar solid-phase microextraction/gas chromatography

scientific article published on 16 September 2005

Suitability of ionic liquids as mobile-phase additives in HPLC with fluorescence and UV detection for the determination of heterocyclic aromatic amines

scientific article published in February 2010

Surface-bonded ionic liquid stationary phases in high-performance liquid chromatography--a review

scientific article published on 02 December 2011

The ionic liquid 1-hexadecyl-3-methylimidazolium bromide as novel extracting system for polycyclic aromatic hydrocarbons contained in sediments using focused microwave-assisted extraction

scientific article

Ultrasonic micellar extraction of polycyclic aromatic hydrocarbons from marine sediments

scientific article published in March 2001

Use of ionic liquid aggregates of 1-hexadecyl-3-butyl imidazolium bromide in a focused-microwave assisted extraction method followed by high-performance liquid chromatography with ultraviolet and fluorescence detection to determine the 15+1 EU priori

article

Utilization of a benzyl functionalized polymeric ionic liquid for the sensitive determination of polycyclic aromatic hydrocarbons; parabens and alkylphenols in waters using solid-phase microextraction coupled to gas chromatography-flame ionization d

scientific article published on 21 September 2010

Utilization of an ionic liquidin situpreconcentration method for the determination of the 15 + 1 European Union polycyclic aromatic hydrocarbons in drinking water and fruit-tea infusions

article

Vortex-assisted emulsification microextraction followed by in-syringe ultrasound-assisted back-microextraction to determine haloacetic acids in waters

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