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Sample preparation and antibiotic quantification in vinasse generated from sugarcane ethanol fuel production
(2022-03-15)
Vinasse - liquid organic residue derived from the production of sugarcane ethanol fuel, has been applied as soil amendment via fertigation for decades in Brazil. This organic residue is an important source of nutrients and ...
On-line Solid Phase Extraction Coupled With Liquid Chromatography Tandem Mass Spectrometry For The Determination Of Codeine In Human Plasma
(Soc Brasileira QuimicaSão Paulo, 2017)
Análise de parabenos em águas superficiais urbanas por extração em fase sólida on-line usando cromatografia líquida acoplada à espectrometria de massas
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação de Mestrado Profissional em Química - PPGQCâmpus São Carlos, 2017-05-24)
Parabens are the most popular antimicrobials used for more than 100 years in personal care products, the most known are methylpaben, ethylparaben, propylparaben and butylparaben. The continued release of these antimicrobials ...
On-line solid phase extraction CZE for the simultaneous determination of lanthanum and gadolinium at picogram per liter levels
(Wiley VCH Verlag, 2009-08)
A non-specific on-line method is presented for the extraction and preconcentration of two rare earth elements using a microcartridge containing C18-derivatized silica particles prior to their analysis by CZE. The microcartridge, ...