4 research outputs found
Singlet Oxygen Production by a Crude Oil from the San Jorge Gulf Basin, Argentina
The quantum yields for singlet oxygen production by diluted solutions of an Argentine crude oil and its SARA (saturates, aromatics, resins and asphaltenes) fractions were obtained by direct detection of the characteristic phosphorescence following monochromatic excitation at 355 nm. The most efficient sensitizers of singlet oxygen in organic media are crude oil, maltenes and aromatics fractions (values of singlet oxygen quantum yield are around 0.7), and resins (values around 0.1) are the poorest. Also, the quenching of singlet oxygen by the crude oil and its fractions was investigated; the asphaltenes and the petroleum are relatively efficient quenchers of singlet oxygen.Fil: LĂłpez, Rosmari Marisa. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales y Ciencias de la Salud - Sede Comodoro. Departamento de QuĂmica; ArgentinaFil: Mangani, Adriana del Luján. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales y Ciencias de la Salud - Sede Comodoro. Departamento de QuĂmica; ArgentinaFil: Arbeloa, Ernesto Maximiliano. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - CĂłrdoba; Argentina. Universidad Nacional de RĂo Cuarto. Facultad de Ciencias Exactas FisicoquĂmicas y Naturales. Departamento de QuĂmica; ArgentinaFil: Luiz, Marta Mabel. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de IngenierĂa - Sede Comodoro; ArgentinaFil: GutiĂ©rrez, MarĂa Isela. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales y Ciencias de la Salud - Sede Comodoro. Departamento de QuĂmica; Argentin