Browsing by Author "Toledo, Carla"
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Rocco, Gabriela; Toledo, Carla; Ahumada Torres, Aída Inés de Lourdes; Sepúlveda, Betsabet; Cañete Molina, Alvaro Félix; Richter Duk, Pablo (ELSEVIER SCIENCE BV, 2008-06-06)An efficient continuous pressurized solvent extraction (PSE) method assisted by ultrasound energy was developed for the extraction of polychlorinated biphenyls (PCBs) from biosolids. Analytes were determined in the extracts ...
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Rocco, Gabriela; Toledo, Carla; Ahumada, Inés; Sepúlveda, Betsabet; Cañete, Alvaro; Richter Duk, Pablo (ELSEVIER SCIENCE BV, 2008-06-06)An efficient continuous pressurized solvent extraction (PSE) method assisted by ultrasound energy was developed for the extraction of polychlorinated biphenyls (PCBs) from biosolids. Analytes were determined in the ...
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Toledo, Carla; Enríquez, Pedro; Garrido, Mariano; Fernández-Band, Beatríz; Richter Duk, Pablo (TAYLOR & FRANCIS INC, 2010)A headspace-mass spectrometry with alternative chromatographic separation using a column switching system was developed for the screening and confirmation of BTEX and styrene in comestible oils. According to the position ...
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Toledo, Carla; Valle, Luis; Narváez, Jessica; Richter Duk, Pablo (SOC BRASILEIRA QUIMICA, 2007)A rapid and simple method was developed for screening polychlorinated biphenyls in transformer oil. The method is based on liquid-liquid extraction in methanol and subsequent direct gas chromatography-mass spectrometric ...