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- Casas Ferreira, Ana María, et al. Show all 3 Authors
- Analytical and bioanalytical chemistry 2011 v.399 no.2 pp. 945-953
- acetic anhydride; derivatization; desorption; detection limit; experimental design; gas chromatography-mass spectrometry; methylparaben; tap water; temperature; wastewater
- ... Stir-bar sorptive extraction in combination with an in situ derivatisation reaction and thermal desorption-gas chromatography-mass spectrometry was successfully applied to determine parabens (methylparaben, isopropylparaben, n-propylparaben, butylparaben and benzylparaben), triclosan and methyltriclosan in water samples. This approach improves both the extraction efficiency and the sensitivity in ...
- Casas Ferreira, Ana María, et al. Show all 4 Authors
- Journal of chromatography 2013 v.1318 pp. 35-42
- United States Environmental Protection Agency; condensation; derivatization; detection limit; dibromoacetic acid; dichloroacetic acid; drinking water; environmental protection; gas chromatography-mass spectrometry; microextraction; mixing; monobromoacetic acid; monochloroacetic acid; swimming; trichloroacetic acid; Spain; United States
- ... A novel analytical method is reported for the determination of monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid. These are the five haloacetic acids (HAAs) for which the U.S. Environmental Protection Agency (US EPA) has regulated a maximum contamination level (MCL) of 0.060mgL⁻¹ for the sum of their concentrations in drinking waters. Th ...