TY  - SER
AU  - Klein,Geoffrey C.
AU  - Angstrom,Annelie
AU  - Angstrom,Annelie
TI  - Use of saturates/aromatics/resins/asphaltenes (SARA) fractionation to determine matrix effects in crude oil analysis by electrospray ionization fourier transform ion cyclotron resonance mass spectrometry
KW  - Asfaltenos
KW  - Análisis de petróleo crudo
KW  - Espectrometría
ER  -