Buscar
Mostrando ítems 1-10 de 2985
Analysis of Steroids using Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry-Mass Spectrometry (SPME-GC-MS-MS)
(2014)
Direct immersion SPME-GC-MS-MS was used for the analysis of steroids in water at part-per-trillion(ppt) and lower concentrations. The method was validated and extended to real sample analysis. The method were linear from ...
Correlation between mandibular gland secretion and cuticular hydrocarbons in the stingless bee Melipona quadrifasciata
(2012-08-28)
We investigated whether Melipona quadrifasciata worker mandibular gland secretions contribute directly to their cuticular hydrocarbon profile. The mandibular gland secretion composition and cuticular surface compounds of ...
Correlation between mandibular gland secretion and cuticular hydrocarbons in the stingless bee Melipona quadrifasciata
(2012-08-28)
We investigated whether Melipona quadrifasciata worker mandibular gland secretions contribute directly to their cuticular hydrocarbon profile. The mandibular gland secretion composition and cuticular surface compounds of ...
GC-MS/MS versus LC-MS/MS for unambiguous identification of α and β-trenbolone in bovine urine
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAUFMG, 2019)
Identification of polycyclic aromatic hydrocarbons in sugar cane soot by gas chromatography mass spectrometry
(Vieweg, 1997-12-01)
Fly soot samples collected in the sugar cane fields after the process of burning were extracted in a Soxhlet apparatus (methylene chloride:methanol 4:1). The extracts were fractionated on silica gel Sep-Pak cartridges into ...
Hollow fiber liquid-phase microextraction-gas chromatography-mass spectrometry method to analyze bisphenol a and other plasticizer metabolites
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAUFMG, 2017)